STEVEMIT
steve/hex-head-screw
Hexagon head screw, fully threaded, ISO 4017 / DIN 933, M1.6 to M36, any length, with catalogue sizes as presets.
steve/button-head-screw
Button head socket screw, ISO 7380, M3 to M12, any length.
Isometric
Section analysis
Plane normal
Offset
| 1 | """ISO 7380 button head socket screw. Envelope: domed head (revolved profile), hex socket, plain shank. |
| 2 | The head's flat side is on the XY plane at the origin; the shank points down -Z.""" |
| 3 | from steve import Model |
| 4 | |
| 5 | size = "M4" # Thread size |
| 6 | length = 10 # mm Length under the head |
| 7 | |
| 8 | # size: (head diameter dk, head height k, hex key s) |
| 9 | HEADS = { |
| 10 | 'M3': (5.7, 1.65, 2.0), |
| 11 | 'M4': (7.6, 2.2, 2.5), |
| 12 | 'M5': (9.5, 2.75, 3.0), |
| 13 | 'M6': (10.5, 3.3, 4.0), |
| 14 | 'M8': (14.0, 4.4, 5.0), |
| 15 | 'M10': (17.5, 5.5, 6.0), |
| 16 | 'M12': (21.0, 6.6, 8.0), |
| 17 | } |
| 18 | NOMINAL = { |
| 19 | 'M3': 3.0, |
| 20 | 'M4': 4.0, |
| 21 | 'M5': 5.0, |
| 22 | 'M6': 6.0, |
| 23 | 'M8': 8.0, |
| 24 | 'M10': 10.0, |
| 25 | 'M12': 12.0, |
| 26 | } |
| 27 | dk, k, s = HEADS[size] |
| 28 | d = NOMINAL[size] |
| 29 | |
| 30 | model = Model() |
| 31 | with model.sketch("head_profile", on="XZ", name="Head profile") as sk: |
| 32 | sk.polyline("outline", [(0, 0), (dk / 2, 0), (dk / 2, 0.25 * k), (0.42 * dk, 0.7 * k), (0.3 * dk, 0.92 * k), (0, k)]) |
| 33 | model.revolve("head", "head_profile", axis="Z") |
| 34 | with model.sketch("shank_sketch", on="XY", name="Shank") as sk: |
| 35 | sk.circle("shank", (0, 0), d / 2) |
| 36 | model.extrude("shank", "shank_sketch", distance=-length) |
| 37 | model.plane("head_top", on="XY", offset=k, name="Head top") |
| 38 | with model.sketch("socket_sketch", on="head_top", name="Hex socket") as sk: |
| 39 | sk.polygon("hex", (0, 0), s / 2, 6, inscribed=False) |
| 40 | model.extrude("socket", "socket_sketch", distance=-0.6 * k, op="cut") |
| 41 | result = model.result() |
| 42 |
| 1 | name = "steve/button-head-screw" |
| 2 | version = "1.0.0" |
| 3 | runtime = "steve" |
| 4 | license = "MIT" |
| 5 | summary = "Button head socket screw, ISO 7380, M3 to M12, any length." |
| 6 | description = "ISO 7380 button head socket screw. Envelope: domed head (revolved profile), hex socket, plain shank.\nThe head's flat side is on the XY plane at the origin; the shank points down -Z.\n\nDimensions from STEVE's standard-part tables (nominal values of the standard). Envelope geometry: no modelled thread." |
| 7 | tags = ["fastener", "screw", "iso-7380", "metric"] |
| 8 | |
| 9 | [parameters.size] |
| 10 | type = "choice" |
| 11 | default = "M4" |
| 12 | choices = ["M3", "M4", "M5", "M6", "M8", "M10", "M12"] |
| 13 | label = "Thread size" |
| 14 | |
| 15 | [parameters.length] |
| 16 | type = "number" |
| 17 | default = 10 |
| 18 | min = 3 |
| 19 | max = 120 |
| 20 | step = 1 |
| 21 | unit = "mm" |
| 22 | label = "Length" |
| 23 |
ISO 7380 button head socket screw. Envelope: domed head (revolved profile), hex socket, plain shank. The head's flat side is on the XY plane at the origin; the shank points down -Z. Dimensions from STEVE's standard-part tables (nominal values of the standard). Envelope geometry: no modelled thread.
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Materials and finishes: each part is made of its standard's engineering material, with its usual finish.
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