4 files changed, +711 −36

part.py +40 −28

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		@@ -1,42 +1,54 @@
1		-"""ISO 4017 (DIN 933) hex head screw, fully threaded. Envelope: hex head and plain shank.
2		-The head's bearing face is on the XY plane at the origin; the shank points down -Z.
	1	+"""Hexagon head screw (fully threaded), ISO 4017 (DIN 933), M1.6 to M36, any length.
3	2
4		-Material: property class 8.8 medium-carbon steel, quenched and tempered (C45), zinc plated."""
	3	+Envelope model for assemblies: hexagon head (width across flats s, height k, sharp corners) and a plain shank at the
	4	+nominal thread diameter d (the thread is not modelled). The head's bearing face is on the XY plane at the origin,
	5	+the head above it, the shank along -Z; `length` is the nominal length l, measured from under the head. Two flats of
	6	+the head are parallel to the X axis.
	7	+"""
5	8	from steve import Model
6	9
7	10	size = "M6" # Thread size
8		-length = 20 # mm Length under the head
	11	+length = 20 # mm Nominal length (under the head)
	12	+material = "steel" # Material
9	13
10		-# size: (across flats s, head height k)
11		-HEADS = {
12		- 'M3': (5.5, 2.0),
13		- 'M4': (7.0, 2.8),
14		- 'M5': (8.0, 3.5),
15		- 'M6': (10.0, 4.0),
16		- 'M8': (13.0, 5.3),
17		- 'M10': (16.0, 6.4),
18		- 'M12': (18.0, 7.5),
	14	+# ISO 4017:2022, Tables 1-3 (official preview pp. 3-5:
	15	+# https://cdn.standards.iteh.ai/samples/72585/1179998ddd594550a909d6e13c416f3e/ISO-4017-2022.pdf); the same values in
	16	+# ISO 4017:2011 Table 1 and ISO 4017:2014 (M1.6-M6 seen). size: (thread d, width across flats s nominal, head height k nominal)
	17	+DIMENSIONS = {
	18	+ "M1.6": (1.6, 3.2, 1.1),
	19	+ "M2": (2.0, 4.0, 1.4),
	20	+ "M2.5": (2.5, 5.0, 1.7),
	21	+ "M3": (3.0, 5.5, 2.0),
	22	+ "M4": (4.0, 7.0, 2.8),
	23	+ "M5": (5.0, 8.0, 3.5),
	24	+ "M6": (6.0, 10.0, 4.0),
	25	+ "M8": (8.0, 13.0, 5.3),
	26	+ "M10": (10.0, 16.0, 6.4),
	27	+ "M12": (12.0, 18.0, 7.5),
	28	+ "M14": (14.0, 21.0, 8.8),
	29	+ "M16": (16.0, 24.0, 10.0),
	30	+ "M20": (20.0, 30.0, 12.5),
	31	+ "M24": (24.0, 36.0, 15.0),
	32	+ "M30": (30.0, 46.0, 18.7),
	33	+ "M36": (36.0, 55.0, 22.5),
19	34	}
20		-NOMINAL = {
21		- 'M3': 3.0,
22		- 'M4': 4.0,
23		- 'M5': 5.0,
24		- 'M6': 6.0,
25		- 'M8': 8.0,
26		- 'M10': 10.0,
27		- 'M12': 12.0,
	35	+# material choice: (STEVE material library id, appearance colour)
	36	+MATERIALS = {
	37	+ "steel": ("steel-generic", "#b4b8bd"), # property class 8.8, zinc plated
	38	+ "stainless-a2": ("stainless-304", "#c9ccd0"), # ISO 3506-1 A2-70
	39	+ "stainless-a4": ("stainless-316", "#c9ccd0"), # ISO 3506-1 A4-70 / A4-80
28	40	}
29		-s, k = HEADS[size]
30		-d = NOMINAL[size]
	41	+
	42	+d, s, k = DIMENSIONS[size]
	43	+material_id, colour = MATERIALS[material]
31	44
32	45	model = Model()
33	46	with model.sketch("head_sketch", on="XY", name="Head") as sk:
34	47	sk.polygon("hex", (0, 0), s / 2, 6, inscribed=False)
35		-model.extrude("head", "head_sketch", distance=k)
	48	+model.extrude("head", "head_sketch", distance=k, name="Head")
36	49	with model.sketch("shank_sketch", on="XY", name="Shank") as sk:
37		- sk.circle("shank", (0, 0), d / 2)
38		-model.extrude("shank", "shank_sketch", distance=-length)
39		-model.material("steel-1c45") # class 8.8 steel
40		-model.appearance(color="#c9d1d9", metalness=1.0, roughness=0.3) # clear zinc plating
	50	+ sk.circle("shank_circle", (0, 0), d / 2)
	51	+model.extrude("shank", "shank_sketch", distance=-length, name="Shank")
	52	+model.material(material_id, color=colour)
41	53	result = model.result()
42	54

pypart.toml +19 −8

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		@@ -1,24 +1,35 @@
1	1	name = "steve/hex-head-screw"
2		-version = "1.1.0"
	2	+version = "2.0.0"
3	3	runtime = "steve"
4	4	license = "MIT"
5		-summary = "Hex head screw, ISO 4017 / DIN 933, M3 to M12, any length."
6		-description = "ISO 4017 (DIN 933) hex head screw, fully threaded. Envelope: hex head and plain shank.\nThe head's bearing face is on the XY plane at the origin; the shank points down -Z.\n\nMaterial: property class 8.8 medium-carbon steel, quenched and tempered (C45), zinc plated.\n\nDimensions from STEVE's standard-part tables (nominal values of the standard). Envelope geometry: no modelled thread."
7		-tags = ["fastener", "screw", "bolt", "iso-4017", "din-933", "metric"]
8		-changes = "Materials and finishes: each part is made of its standard's engineering material, with its usual finish."
	5	+summary = "Hexagon head screw, fully threaded, ISO 4017 / DIN 933, M1.6 to M36, any length, with catalogue sizes as presets."
	6	+description = """ISO 4017 (DIN 933) hexagon head screw, thread to the head. Envelope geometry for assemblies: hexagon \
	7	+head (s, k, sharp corners) and a plain shank at the nominal thread diameter; the thread itself is not modelled.
	8	+
	9	+The head's bearing face is on the XY plane at the origin and the shank points along -Z; `length` is the nominal \
	10	+length under the head. Dimensions from ISO 4017:2014 Table 1 (see the README)."""
	11	+tags = ["fastener", "screw", "bolt", "hex-head", "iso-4017", "din-933", "metric"]
9	12
10	13	[parameters.size]
11	14	type = "choice"
12	15	default = "M6"
13		-choices = ["M3", "M4", "M5", "M6", "M8", "M10", "M12"]
	16	+choices = ["M1.6", "M2", "M2.5", "M3", "M4", "M5", "M6", "M8", "M10", "M12", "M14", "M16", "M20", "M24", "M30", "M36"]
14	17	label = "Thread size"
15	18
16	19	[parameters.length]
17	20	type = "number"
18	21	default = 20
19		-min = 3
20		-max = 120
	22	+min = 2
	23	+max = 400
21	24	step = 1
22	25	unit = "mm"
23	26	label = "Length"
	27	+description = "Nominal length l, from under the head to the end of the shank."
24	28
	29	+[parameters.material]
	30	+type = "choice"
	31	+default = "steel"
	32	+choices = ["steel", "stainless-a2", "stainless-a4"]
	33	+label = "Material"
	34	+description = "steel: property class 8.8, zinc plated; stainless-a2 / stainless-a4: ISO 3506-1 A2 / A4."
	35	+

presets.toml added in 2.0.0

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		@@ -1,0 +1,597 @@
	1	+# Presets of this part (factory/PRESETS.md). Written by factory/gen.py.
	2	+
	3	+[[presets]]
	4	+id = "M2x4"
	5	+title = "M2 × 4"
	6	+params = { size = "M2", length = 4 }
	7	+aliases = ["ISO 4017 M2x4", "DIN 933 M2x4", "hex bolt M2x4", "hex head screw M2x4", "M2 x 4 mm"]
	8	+standard = "ISO 4017"
	9	+
	10	+[[presets]]
	11	+id = "M2x5"
	12	+title = "M2 × 5"
	13	+params = { size = "M2", length = 5 }
	14	+aliases = ["ISO 4017 M2x5", "DIN 933 M2x5", "hex bolt M2x5", "hex head screw M2x5", "M2 x 5 mm"]
	15	+standard = "ISO 4017"
	16	+
	17	+[[presets]]
	18	+id = "M2x6"
	19	+title = "M2 × 6"
	20	+params = { size = "M2", length = 6 }
	21	+aliases = ["ISO 4017 M2x6", "DIN 933 M2x6", "hex bolt M2x6", "hex head screw M2x6", "M2 x 6 mm"]
	22	+standard = "ISO 4017"
	23	+
	24	+[[presets]]
	25	+id = "M2x8"
	26	+title = "M2 × 8"
	27	+params = { size = "M2", length = 8 }
	28	+aliases = ["ISO 4017 M2x8", "DIN 933 M2x8", "hex bolt M2x8", "hex head screw M2x8", "M2 x 8 mm"]
	29	+standard = "ISO 4017"
	30	+
	31	+[[presets]]
	32	+id = "M2x10"
	33	+title = "M2 × 10"
	34	+params = { size = "M2", length = 10 }
	35	+aliases = ["ISO 4017 M2x10", "DIN 933 M2x10", "hex bolt M2x10", "hex head screw M2x10", "M2 x 10 mm"]
	36	+standard = "ISO 4017"
	37	+
	38	+[[presets]]
	39	+id = "M2x12"
	40	+title = "M2 × 12"
	41	+params = { size = "M2", length = 12 }
	42	+aliases = ["ISO 4017 M2x12", "DIN 933 M2x12", "hex bolt M2x12", "hex head screw M2x12", "M2 x 12 mm"]
	43	+standard = "ISO 4017"
	44	+
	45	+[[presets]]
	46	+id = "M2x16"
	47	+title = "M2 × 16"
	48	+params = { size = "M2", length = 16 }
	49	+aliases = ["ISO 4017 M2x16", "DIN 933 M2x16", "hex bolt M2x16", "hex head screw M2x16", "M2 x 16 mm"]
	50	+standard = "ISO 4017"
	51	+
	52	+[[presets]]
	53	+id = "M2x20"
	54	+title = "M2 × 20"
	55	+params = { size = "M2", length = 20 }
	56	+aliases = ["ISO 4017 M2x20", "DIN 933 M2x20", "hex bolt M2x20", "hex head screw M2x20", "M2 x 20 mm"]
	57	+standard = "ISO 4017"
	58	+
	59	+[[presets]]
	60	+id = "M2x25"
	61	+title = "M2 × 25"
	62	+params = { size = "M2", length = 25 }
	63	+aliases = ["ISO 4017 M2x25", "DIN 933 M2x25", "hex bolt M2x25", "hex head screw M2x25", "M2 x 25 mm"]
	64	+standard = "ISO 4017"
	65	+
	66	+[[presets]]
	67	+id = "M2x30"
	68	+title = "M2 × 30"
	69	+params = { size = "M2", length = 30 }
	70	+aliases = ["ISO 4017 M2x30", "DIN 933 M2x30", "hex bolt M2x30", "hex head screw M2x30", "M2 x 30 mm"]
	71	+standard = "ISO 4017"
	72	+
	73	+[[presets]]
	74	+id = "M2.5x4"
	75	+title = "M2.5 × 4"
	76	+params = { size = "M2.5", length = 4 }
	77	+aliases = ["ISO 4017 M2.5x4", "DIN 933 M2.5x4", "hex bolt M2.5x4", "hex head screw M2.5x4", "M2.5 x 4 mm"]
	78	+standard = "ISO 4017"
	79	+
	80	+[[presets]]
	81	+id = "M2.5x5"
	82	+title = "M2.5 × 5"
	83	+params = { size = "M2.5", length = 5 }
	84	+aliases = ["ISO 4017 M2.5x5", "DIN 933 M2.5x5", "hex bolt M2.5x5", "hex head screw M2.5x5", "M2.5 x 5 mm"]
	85	+standard = "ISO 4017"
	86	+
	87	+[[presets]]
	88	+id = "M2.5x6"
	89	+title = "M2.5 × 6"
	90	+params = { size = "M2.5", length = 6 }
	91	+aliases = ["ISO 4017 M2.5x6", "DIN 933 M2.5x6", "hex bolt M2.5x6", "hex head screw M2.5x6", "M2.5 x 6 mm"]
	92	+standard = "ISO 4017"
	93	+
	94	+[[presets]]
	95	+id = "M2.5x8"
	96	+title = "M2.5 × 8"
	97	+params = { size = "M2.5", length = 8 }
	98	+aliases = ["ISO 4017 M2.5x8", "DIN 933 M2.5x8", "hex bolt M2.5x8", "hex head screw M2.5x8", "M2.5 x 8 mm"]
	99	+standard = "ISO 4017"
	100	+
	101	+[[presets]]
	102	+id = "M2.5x10"
	103	+title = "M2.5 × 10"
	104	+params = { size = "M2.5", length = 10 }
	105	+aliases = ["ISO 4017 M2.5x10", "DIN 933 M2.5x10", "hex bolt M2.5x10", "hex head screw M2.5x10", "M2.5 x 10 mm"]
	106	+standard = "ISO 4017"
	107	+
	108	+[[presets]]
	109	+id = "M2.5x12"
	110	+title = "M2.5 × 12"
	111	+params = { size = "M2.5", length = 12 }
	112	+aliases = ["ISO 4017 M2.5x12", "DIN 933 M2.5x12", "hex bolt M2.5x12", "hex head screw M2.5x12", "M2.5 x 12 mm"]
	113	+standard = "ISO 4017"
	114	+
	115	+[[presets]]
	116	+id = "M2.5x16"
	117	+title = "M2.5 × 16"
	118	+params = { size = "M2.5", length = 16 }
	119	+aliases = ["ISO 4017 M2.5x16", "DIN 933 M2.5x16", "hex bolt M2.5x16", "hex head screw M2.5x16", "M2.5 x 16 mm"]
	120	+standard = "ISO 4017"
	121	+
	122	+[[presets]]
	123	+id = "M2.5x20"
	124	+title = "M2.5 × 20"
	125	+params = { size = "M2.5", length = 20 }
	126	+aliases = ["ISO 4017 M2.5x20", "DIN 933 M2.5x20", "hex bolt M2.5x20", "hex head screw M2.5x20", "M2.5 x 20 mm"]
	127	+standard = "ISO 4017"
	128	+
	129	+[[presets]]
	130	+id = "M2.5x25"
	131	+title = "M2.5 × 25"
	132	+params = { size = "M2.5", length = 25 }
	133	+aliases = ["ISO 4017 M2.5x25", "DIN 933 M2.5x25", "hex bolt M2.5x25", "hex head screw M2.5x25", "M2.5 x 25 mm"]
	134	+standard = "ISO 4017"
	135	+
	136	+[[presets]]
	137	+id = "M2.5x30"
	138	+title = "M2.5 × 30"
	139	+params = { size = "M2.5", length = 30 }
	140	+aliases = ["ISO 4017 M2.5x30", "DIN 933 M2.5x30", "hex bolt M2.5x30", "hex head screw M2.5x30", "M2.5 x 30 mm"]
	141	+standard = "ISO 4017"
	142	+
	143	+[[presets]]
	144	+id = "M3x4"
	145	+title = "M3 × 4"
	146	+params = { size = "M3", length = 4 }
	147	+aliases = ["ISO 4017 M3x4", "DIN 933 M3x4", "hex bolt M3x4", "hex head screw M3x4", "M3 x 4 mm"]
	148	+standard = "ISO 4017"
	149	+
	150	+[[presets]]
	151	+id = "M3x5"
	152	+title = "M3 × 5"
	153	+params = { size = "M3", length = 5 }
	154	+aliases = ["ISO 4017 M3x5", "DIN 933 M3x5", "hex bolt M3x5", "hex head screw M3x5", "M3 x 5 mm"]
	155	+standard = "ISO 4017"
	156	+
	157	+[[presets]]
	158	+id = "M3x6"
	159	+title = "M3 × 6"
	160	+params = { size = "M3", length = 6 }
	161	+aliases = ["ISO 4017 M3x6", "DIN 933 M3x6", "hex bolt M3x6", "hex head screw M3x6", "M3 x 6 mm"]
	162	+standard = "ISO 4017"
	163	+
	164	+[[presets]]
	165	+id = "M3x8"
	166	+title = "M3 × 8"
	167	+params = { size = "M3", length = 8 }
	168	+aliases = ["ISO 4017 M3x8", "DIN 933 M3x8", "hex bolt M3x8", "hex head screw M3x8", "M3 x 8 mm"]
	169	+standard = "ISO 4017"
	170	+
	171	+[[presets]]
	172	+id = "M3x10"
	173	+title = "M3 × 10"
	174	+params = { size = "M3", length = 10 }
	175	+aliases = ["ISO 4017 M3x10", "DIN 933 M3x10", "hex bolt M3x10", "hex head screw M3x10", "M3 x 10 mm"]
	176	+standard = "ISO 4017"
	177	+
	178	+[[presets]]
	179	+id = "M3x12"
	180	+title = "M3 × 12"
	181	+params = { size = "M3", length = 12 }
	182	+aliases = ["ISO 4017 M3x12", "DIN 933 M3x12", "hex bolt M3x12", "hex head screw M3x12", "M3 x 12 mm"]
	183	+standard = "ISO 4017"
	184	+
	185	+[[presets]]
	186	+id = "M3x16"
	187	+title = "M3 × 16"
	188	+params = { size = "M3", length = 16 }
	189	+aliases = ["ISO 4017 M3x16", "DIN 933 M3x16", "hex bolt M3x16", "hex head screw M3x16", "M3 x 16 mm"]
	190	+standard = "ISO 4017"
	191	+
	192	+[[presets]]
	193	+id = "M3x20"
	194	+title = "M3 × 20"
	195	+params = { size = "M3", length = 20 }
	196	+aliases = ["ISO 4017 M3x20", "DIN 933 M3x20", "hex bolt M3x20", "hex head screw M3x20", "M3 x 20 mm"]
	197	+standard = "ISO 4017"
	198	+
	199	+[[presets]]
	200	+id = "M3x25"
	201	+title = "M3 × 25"
	202	+params = { size = "M3", length = 25 }
	203	+aliases = ["ISO 4017 M3x25", "DIN 933 M3x25", "hex bolt M3x25", "hex head screw M3x25", "M3 x 25 mm"]
	204	+standard = "ISO 4017"
	205	+
	206	+[[presets]]
	207	+id = "M3x30"
	208	+title = "M3 × 30"
	209	+params = { size = "M3", length = 30 }
	210	+aliases = ["ISO 4017 M3x30", "DIN 933 M3x30", "hex bolt M3x30", "hex head screw M3x30", "M3 x 30 mm"]
	211	+standard = "ISO 4017"
	212	+
	213	+[[presets]]
	214	+id = "M3x35"
	215	+title = "M3 × 35"
	216	+params = { size = "M3", length = 35 }
	217	+aliases = ["ISO 4017 M3x35", "DIN 933 M3x35", "hex bolt M3x35", "hex head screw M3x35", "M3 x 35 mm"]
	218	+standard = "ISO 4017"
	219	+
	220	+[[presets]]
	221	+id = "M3x40"
	222	+title = "M3 × 40"
	223	+params = { size = "M3", length = 40 }
	224	+aliases = ["ISO 4017 M3x40", "DIN 933 M3x40", "hex bolt M3x40", "hex head screw M3x40", "M3 x 40 mm"]
	225	+standard = "ISO 4017"
	226	+
	227	+[[presets]]
	228	+id = "M3x50"
	229	+title = "M3 × 50"
	230	+params = { size = "M3", length = 50 }
	231	+aliases = ["ISO 4017 M3x50", "DIN 933 M3x50", "hex bolt M3x50", "hex head screw M3x50", "M3 x 50 mm"]
	232	+standard = "ISO 4017"
	233	+
	234	+[[presets]]
	235	+id = "M4x4"
	236	+title = "M4 × 4"
	237	+params = { size = "M4", length = 4 }
	238	+aliases = ["ISO 4017 M4x4", "DIN 933 M4x4", "hex bolt M4x4", "hex head screw M4x4", "M4 x 4 mm"]
	239	+standard = "ISO 4017"
	240	+
	241	+[[presets]]
	242	+id = "M4x5"
	243	+title = "M4 × 5"
	244	+params = { size = "M4", length = 5 }
	245	+aliases = ["ISO 4017 M4x5", "DIN 933 M4x5", "hex bolt M4x5", "hex head screw M4x5", "M4 x 5 mm"]
	246	+standard = "ISO 4017"
	247	+
	248	+[[presets]]
	249	+id = "M4x6"
	250	+title = "M4 × 6"
	251	+params = { size = "M4", length = 6 }
	252	+aliases = ["ISO 4017 M4x6", "DIN 933 M4x6", "hex bolt M4x6", "hex head screw M4x6", "M4 x 6 mm"]
	253	+standard = "ISO 4017"
	254	+
	255	+[[presets]]
	256	+id = "M4x8"
	257	+title = "M4 × 8"
	258	+params = { size = "M4", length = 8 }
	259	+aliases = ["ISO 4017 M4x8", "DIN 933 M4x8", "hex bolt M4x8", "hex head screw M4x8", "M4 x 8 mm"]
	260	+standard = "ISO 4017"
	261	+
	262	+[[presets]]
	263	+id = "M4x10"
	264	+title = "M4 × 10"
	265	+params = { size = "M4", length = 10 }
	266	+aliases = ["ISO 4017 M4x10", "DIN 933 M4x10", "hex bolt M4x10", "hex head screw M4x10", "M4 x 10 mm"]
	267	+standard = "ISO 4017"
	268	+
	269	+[[presets]]
	270	+id = "M4x12"
	271	+title = "M4 × 12"
	272	+params = { size = "M4", length = 12 }
	273	+aliases = ["ISO 4017 M4x12", "DIN 933 M4x12", "hex bolt M4x12", "hex head screw M4x12", "M4 x 12 mm"]
	274	+standard = "ISO 4017"
	275	+
	276	+[[presets]]
	277	+id = "M4x16"
	278	+title = "M4 × 16"
	279	+params = { size = "M4", length = 16 }
	280	+aliases = ["ISO 4017 M4x16", "DIN 933 M4x16", "hex bolt M4x16", "hex head screw M4x16", "M4 x 16 mm"]
	281	+standard = "ISO 4017"
	282	+
	283	+[[presets]]
	284	+id = "M4x20"
	285	+title = "M4 × 20"
	286	+params = { size = "M4", length = 20 }
	287	+aliases = ["ISO 4017 M4x20", "DIN 933 M4x20", "hex bolt M4x20", "hex head screw M4x20", "M4 x 20 mm"]
	288	+standard = "ISO 4017"
	289	+
	290	+[[presets]]
	291	+id = "M4x25"
	292	+title = "M4 × 25"
	293	+params = { size = "M4", length = 25 }
	294	+aliases = ["ISO 4017 M4x25", "DIN 933 M4x25", "hex bolt M4x25", "hex head screw M4x25", "M4 x 25 mm"]
	295	+standard = "ISO 4017"
	296	+
	297	+[[presets]]
	298	+id = "M4x30"
	299	+title = "M4 × 30"
	300	+params = { size = "M4", length = 30 }
	301	+aliases = ["ISO 4017 M4x30", "DIN 933 M4x30", "hex bolt M4x30", "hex head screw M4x30", "M4 x 30 mm"]
	302	+standard = "ISO 4017"
	303	+
	304	+[[presets]]
	305	+id = "M4x35"
	306	+title = "M4 × 35"
	307	+params = { size = "M4", length = 35 }
	308	+aliases = ["ISO 4017 M4x35", "DIN 933 M4x35", "hex bolt M4x35", "hex head screw M4x35", "M4 x 35 mm"]
	309	+standard = "ISO 4017"
	310	+
	311	+[[presets]]
	312	+id = "M4x40"
	313	+title = "M4 × 40"
	314	+params = { size = "M4", length = 40 }
	315	+aliases = ["ISO 4017 M4x40", "DIN 933 M4x40", "hex bolt M4x40", "hex head screw M4x40", "M4 x 40 mm"]
	316	+standard = "ISO 4017"
	317	+
	318	+[[presets]]
	319	+id = "M4x50"
	320	+title = "M4 × 50"
	321	+params = { size = "M4", length = 50 }
	322	+aliases = ["ISO 4017 M4x50", "DIN 933 M4x50", "hex bolt M4x50", "hex head screw M4x50", "M4 x 50 mm"]
	323	+standard = "ISO 4017"
	324	+
	325	+[[presets]]
	326	+id = "M5x4"
	327	+title = "M5 × 4"
	328	+params = { size = "M5", length = 4 }
	329	+aliases = ["ISO 4017 M5x4", "DIN 933 M5x4", "hex bolt M5x4", "hex head screw M5x4", "M5 x 4 mm"]
	330	+standard = "ISO 4017"
	331	+
	332	+[[presets]]
	333	+id = "M5x5"
	334	+title = "M5 × 5"
	335	+params = { size = "M5", length = 5 }
	336	+aliases = ["ISO 4017 M5x5", "DIN 933 M5x5", "hex bolt M5x5", "hex head screw M5x5", "M5 x 5 mm"]
	337	+standard = "ISO 4017"
	338	+
	339	+[[presets]]
	340	+id = "M5x6"
	341	+title = "M5 × 6"
	342	+params = { size = "M5", length = 6 }
	343	+aliases = ["ISO 4017 M5x6", "DIN 933 M5x6", "hex bolt M5x6", "hex head screw M5x6", "M5 x 6 mm"]
	344	+standard = "ISO 4017"
	345	+
	346	+[[presets]]
	347	+id = "M5x8"
	348	+title = "M5 × 8"
	349	+params = { size = "M5", length = 8 }
	350	+aliases = ["ISO 4017 M5x8", "DIN 933 M5x8", "hex bolt M5x8", "hex head screw M5x8", "M5 x 8 mm"]
	351	+standard = "ISO 4017"
	352	+
	353	+[[presets]]
	354	+id = "M5x10"
	355	+title = "M5 × 10"
	356	+params = { size = "M5", length = 10 }
	357	+aliases = ["ISO 4017 M5x10", "DIN 933 M5x10", "hex bolt M5x10", "hex head screw M5x10", "M5 x 10 mm"]
	358	+standard = "ISO 4017"
	359	+
	360	+[[presets]]
	361	+id = "M5x12"
	362	+title = "M5 × 12"
	363	+params = { size = "M5", length = 12 }
	364	+aliases = ["ISO 4017 M5x12", "DIN 933 M5x12", "hex bolt M5x12", "hex head screw M5x12", "M5 x 12 mm"]
	365	+standard = "ISO 4017"
	366	+
	367	+[[presets]]
	368	+id = "M5x16"
	369	+title = "M5 × 16"
	370	+params = { size = "M5", length = 16 }
	371	+aliases = ["ISO 4017 M5x16", "DIN 933 M5x16", "hex bolt M5x16", "hex head screw M5x16", "M5 x 16 mm"]
	372	+standard = "ISO 4017"
	373	+
	374	+[[presets]]
	375	+id = "M5x20"
	376	+title = "M5 × 20"
	377	+params = { size = "M5", length = 20 }
	378	+aliases = ["ISO 4017 M5x20", "DIN 933 M5x20", "hex bolt M5x20", "hex head screw M5x20", "M5 x 20 mm"]
	379	+standard = "ISO 4017"
	380	+
	381	+[[presets]]
	382	+id = "M5x25"
	383	+title = "M5 × 25"
	384	+params = { size = "M5", length = 25 }
	385	+aliases = ["ISO 4017 M5x25", "DIN 933 M5x25", "hex bolt M5x25", "hex head screw M5x25", "M5 x 25 mm"]
	386	+standard = "ISO 4017"
	387	+
	388	+[[presets]]
	389	+id = "M5x30"
	390	+title = "M5 × 30"
	391	+params = { size = "M5", length = 30 }
	392	+aliases = ["ISO 4017 M5x30", "DIN 933 M5x30", "hex bolt M5x30", "hex head screw M5x30", "M5 x 30 mm"]
	393	+standard = "ISO 4017"
	394	+
	395	+[[presets]]
	396	+id = "M5x35"
	397	+title = "M5 × 35"
	398	+params = { size = "M5", length = 35 }
	399	+aliases = ["ISO 4017 M5x35", "DIN 933 M5x35", "hex bolt M5x35", "hex head screw M5x35", "M5 x 35 mm"]
	400	+standard = "ISO 4017"
	401	+
	402	+[[presets]]
	403	+id = "M5x40"
	404	+title = "M5 × 40"
	405	+params = { size = "M5", length = 40 }
	406	+aliases = ["ISO 4017 M5x40", "DIN 933 M5x40", "hex bolt M5x40", "hex head screw M5x40", "M5 x 40 mm"]
	407	+standard = "ISO 4017"
	408	+
	409	+[[presets]]
	410	+id = "M5x50"
	411	+title = "M5 × 50"
	412	+params = { size = "M5", length = 50 }
	413	+aliases = ["ISO 4017 M5x50", "DIN 933 M5x50", "hex bolt M5x50", "hex head screw M5x50", "M5 x 50 mm"]
	414	+standard = "ISO 4017"
	415	+
	416	+[[presets]]
	417	+id = "M6x4"
	418	+title = "M6 × 4"
	419	+params = { size = "M6", length = 4 }
	420	+aliases = ["ISO 4017 M6x4", "DIN 933 M6x4", "hex bolt M6x4", "hex head screw M6x4", "M6 x 4 mm"]
	421	+standard = "ISO 4017"
	422	+
	423	+[[presets]]
	424	+id = "M6x5"
	425	+title = "M6 × 5"
	426	+params = { size = "M6", length = 5 }
	427	+aliases = ["ISO 4017 M6x5", "DIN 933 M6x5", "hex bolt M6x5", "hex head screw M6x5", "M6 x 5 mm"]
	428	+standard = "ISO 4017"
	429	+
	430	+[[presets]]
	431	+id = "M6x6"
	432	+title = "M6 × 6"
	433	+params = { size = "M6", length = 6 }
	434	+aliases = ["ISO 4017 M6x6", "DIN 933 M6x6", "hex bolt M6x6", "hex head screw M6x6", "M6 x 6 mm"]
	435	+standard = "ISO 4017"
	436	+
	437	+[[presets]]
	438	+id = "M6x8"
	439	+title = "M6 × 8"
	440	+params = { size = "M6", length = 8 }
	441	+aliases = ["ISO 4017 M6x8", "DIN 933 M6x8", "hex bolt M6x8", "hex head screw M6x8", "M6 x 8 mm"]
	442	+standard = "ISO 4017"
	443	+
	444	+[[presets]]
	445	+id = "M6x10"
	446	+title = "M6 × 10"
	447	+params = { size = "M6", length = 10 }
	448	+aliases = ["ISO 4017 M6x10", "DIN 933 M6x10", "hex bolt M6x10", "hex head screw M6x10", "M6 x 10 mm"]
	449	+standard = "ISO 4017"
	450	+
	451	+[[presets]]
	452	+id = "M6x12"
	453	+title = "M6 × 12"
	454	+params = { size = "M6", length = 12 }
	455	+aliases = ["ISO 4017 M6x12", "DIN 933 M6x12", "hex bolt M6x12", "hex head screw M6x12", "M6 x 12 mm"]
	456	+standard = "ISO 4017"
	457	+
	458	+[[presets]]
	459	+id = "M6x16"
	460	+title = "M6 × 16"
	461	+params = { size = "M6", length = 16 }
	462	+aliases = ["ISO 4017 M6x16", "DIN 933 M6x16", "hex bolt M6x16", "hex head screw M6x16", "M6 x 16 mm"]
	463	+standard = "ISO 4017"
	464	+
	465	+[[presets]]
	466	+id = "M6x20"
	467	+title = "M6 × 20"
	468	+params = { size = "M6", length = 20 }
	469	+aliases = ["ISO 4017 M6x20", "DIN 933 M6x20", "hex bolt M6x20", "hex head screw M6x20", "M6 x 20 mm"]
	470	+standard = "ISO 4017"
	471	+
	472	+[[presets]]
	473	+id = "M6x25"
	474	+title = "M6 × 25"
	475	+params = { size = "M6", length = 25 }
	476	+aliases = ["ISO 4017 M6x25", "DIN 933 M6x25", "hex bolt M6x25", "hex head screw M6x25", "M6 hex head cap screw", "ISO4017 M6x25"]
	477	+standard = "ISO 4017"
	478	+
	479	+[[presets]]
	480	+id = "M6x30"
	481	+title = "M6 × 30"
	482	+params = { size = "M6", length = 30 }
	483	+aliases = ["ISO 4017 M6x30", "DIN 933 M6x30", "hex bolt M6x30", "hex head screw M6x30", "M6 x 30 mm"]
	484	+standard = "ISO 4017"
	485	+
	486	+[[presets]]
	487	+id = "M6x35"
	488	+title = "M6 × 35"
	489	+params = { size = "M6", length = 35 }
	490	+aliases = ["ISO 4017 M6x35", "DIN 933 M6x35", "hex bolt M6x35", "hex head screw M6x35", "M6 x 35 mm"]
	491	+standard = "ISO 4017"
	492	+
	493	+[[presets]]
	494	+id = "M6x40"
	495	+title = "M6 × 40"
	496	+params = { size = "M6", length = 40 }
	497	+aliases = ["ISO 4017 M6x40", "DIN 933 M6x40", "hex bolt M6x40", "hex head screw M6x40", "M6 x 40 mm"]
	498	+standard = "ISO 4017"
	499	+
	500	+[[presets]]
	501	+id = "M6x50"
	502	+title = "M6 × 50"
	503	+params = { size = "M6", length = 50 }
	504	+aliases = ["ISO 4017 M6x50", "DIN 933 M6x50", "hex bolt M6x50", "hex head screw M6x50", "M6 x 50 mm"]
	505	+standard = "ISO 4017"
	506	+
	507	+[[presets]]
	508	+id = "M8x4"
	509	+title = "M8 × 4"
	510	+params = { size = "M8", length = 4 }
	511	+aliases = ["ISO 4017 M8x4", "DIN 933 M8x4", "hex bolt M8x4", "hex head screw M8x4", "M8 x 4 mm"]
	512	+standard = "ISO 4017"
	513	+
	514	+[[presets]]
	515	+id = "M8x5"
	516	+title = "M8 × 5"
	517	+params = { size = "M8", length = 5 }
	518	+aliases = ["ISO 4017 M8x5", "DIN 933 M8x5", "hex bolt M8x5", "hex head screw M8x5", "M8 x 5 mm"]
	519	+standard = "ISO 4017"
	520	+
	521	+[[presets]]
	522	+id = "M8x6"
	523	+title = "M8 × 6"
	524	+params = { size = "M8", length = 6 }
	525	+aliases = ["ISO 4017 M8x6", "DIN 933 M8x6", "hex bolt M8x6", "hex head screw M8x6", "M8 x 6 mm"]
	526	+standard = "ISO 4017"
	527	+
	528	+[[presets]]
	529	+id = "M8x8"
	530	+title = "M8 × 8"
	531	+params = { size = "M8", length = 8 }
	532	+aliases = ["ISO 4017 M8x8", "DIN 933 M8x8", "hex bolt M8x8", "hex head screw M8x8", "M8 x 8 mm"]
	533	+standard = "ISO 4017"
	534	+
	535	+[[presets]]
	536	+id = "M8x10"
	537	+title = "M8 × 10"
	538	+params = { size = "M8", length = 10 }
	539	+aliases = ["ISO 4017 M8x10", "DIN 933 M8x10", "hex bolt M8x10", "hex head screw M8x10", "M8 x 10 mm"]
	540	+standard = "ISO 4017"
	541	+
	542	+[[presets]]
	543	+id = "M8x12"
	544	+title = "M8 × 12"
	545	+params = { size = "M8", length = 12 }
	546	+aliases = ["ISO 4017 M8x12", "DIN 933 M8x12", "hex bolt M8x12", "hex head screw M8x12", "M8 x 12 mm"]
	547	+standard = "ISO 4017"
	548	+
	549	+[[presets]]
	550	+id = "M8x16"
	551	+title = "M8 × 16"
	552	+params = { size = "M8", length = 16 }
	553	+aliases = ["ISO 4017 M8x16", "DIN 933 M8x16", "hex bolt M8x16", "hex head screw M8x16", "M8 x 16 mm"]
	554	+standard = "ISO 4017"
	555	+
	556	+[[presets]]
	557	+id = "M8x20"
	558	+title = "M8 × 20"
	559	+params = { size = "M8", length = 20 }
	560	+aliases = ["ISO 4017 M8x20", "DIN 933 M8x20", "hex bolt M8x20", "hex head screw M8x20", "M8 x 20 mm"]
	561	+standard = "ISO 4017"
	562	+
	563	+[[presets]]
	564	+id = "M8x25"
	565	+title = "M8 × 25"
	566	+params = { size = "M8", length = 25 }
	567	+aliases = ["ISO 4017 M8x25", "DIN 933 M8x25", "hex bolt M8x25", "hex head screw M8x25", "M8 x 25 mm"]
	568	+standard = "ISO 4017"
	569	+
	570	+[[presets]]
	571	+id = "M8x30"
	572	+title = "M8 × 30"
	573	+params = { size = "M8", length = 30 }
	574	+aliases = ["ISO 4017 M8x30", "DIN 933 M8x30", "hex bolt M8x30", "hex head screw M8x30", "M8 x 30 mm"]
	575	+standard = "ISO 4017"
	576	+
	577	+[[presets]]
	578	+id = "M8x35"
	579	+title = "M8 × 35"
	580	+params = { size = "M8", length = 35 }
	581	+aliases = ["ISO 4017 M8x35", "DIN 933 M8x35", "hex bolt M8x35", "hex head screw M8x35", "M8 x 35 mm"]
	582	+standard = "ISO 4017"
	583	+
	584	+[[presets]]
	585	+id = "M8x40"
	586	+title = "M8 × 40"
	587	+params = { size = "M8", length = 40 }
	588	+aliases = ["ISO 4017 M8x40", "DIN 933 M8x40", "hex bolt M8x40", "hex head screw M8x40", "M8 x 40 mm"]
	589	+standard = "ISO 4017"
	590	+
	591	+[[presets]]
	592	+id = "M8x50"
	593	+title = "M8 × 50"
	594	+params = { size = "M8", length = 50 }
	595	+aliases = ["ISO 4017 M8x50", "DIN 933 M8x50", "hex bolt M8x50", "hex head screw M8x50", "M8 x 50 mm"]
	596	+standard = "ISO 4017"
	597	+

README.md added in 2.0.0

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		@@ -1,0 +1,55 @@
	1	+# Hex head screw (ISO 4017 / DIN 933)
	2	+
	3	+Hexagon head screw threaded up to the head, metric coarse thread, M1.6 to M36, at any length. Presets cover the
	4	+common catalogue sizes (M6 × 20, M8 × 40, ...).
	5	+
	6	+## Geometry
	7	+
	8	+Envelope for assemblies and clearance checks:
	9	+
	10	+- hexagon head, width across flats **s** (nominal), height **k** (nominal), sharp corners (across corners
	11	+ s / cos 30°, the largest the head can be); two flats parallel to the X axis;
	12	+- plain shank at the nominal thread diameter **d**, length **l** (`length`); the thread is not modelled.
	13	+
	14	+The head's bearing face is on the XY plane at the origin, the head above it, the shank along -Z.
	15	+
	16	+## Parameters
	17	+
	18	+| Parameter | Meaning |
	19	+|---|---|
	20	+| `size` | Thread size, M1.6 to M36 |
	21	+| `length` | Nominal length l under the head, mm |
	22	+| `material` | `steel` (property class 8.8, zinc plated), `stainless-a2`, `stainless-a4` (ISO 3506-1) |
	23	+
	24	+## Source
	25	+
	26	+ISO 4017:2022, *Fasteners — Hexagon head screws — Product grades A and B*, Tables 1 to 3, pp. 3-5: d, s (nominal =
	27	+max), k (nominal), read from the official preview
	28	+(<https://cdn.standards.iteh.ai/samples/72585/1179998ddd594550a909d6e13c416f3e/ISO-4017-2022.pdf>; M30 and M36 are
	29	+product grade B, Table 3). The same values in ISO 4017:2011, Table 1
	30	+(<https://fpg-co.com/Standards/ISO%204017-2011%20Hexagon%20head%20screws%20%E2%80%94%20Product%20grades%20A%20and%20B.pdf>)
	31	+and, for M1.6 to M6, the ISO 4017:2014 preview. fasten.it's DIN EN ISO 4017:2014 page gives k 19 and 23 for M30 and
	32	+M36, which are DIN 933 heights and contradict its own k min (18.28, 22.08); the ISO tables' 18.7 and 22.5 are used.
	33	+DIN 933 uses the same s for these sizes except M10 (17), M12 (19), M14 (22) and M22; this recipe follows ISO 4017.
	34	+
	35	+| Size | s | k |
	36	+|---|---|---|
	37	+| M1.6 | 3.2 | 1.1 |
	38	+| M2 | 4.0 | 1.4 |
	39	+| M2.5 | 5.0 | 1.7 |
	40	+| M3 | 5.5 | 2.0 |
	41	+| M4 | 7.0 | 2.8 |
	42	+| M5 | 8.0 | 3.5 |
	43	+| M6 | 10.0 | 4.0 |
	44	+| M8 | 13.0 | 5.3 |
	45	+| M10 | 16.0 | 6.4 |
	46	+| M12 | 18.0 | 7.5 |
	47	+| M14 | 21.0 | 8.8 |
	48	+| M16 | 24.0 | 10.0 |
	49	+| M20 | 30.0 | 12.5 |
	50	+| M24 | 36.0 | 15.0 |
	51	+| M30 | 46.0 | 18.7 |
	52	+| M36 | 55.0 | 22.5 |
	53	+
	54	+Preset list: sizes and lengths of the step.parts catalogue (MIT), see `library/NOTICE.md`.
	55	+