steve/heat-set-insert

Heat-set (heat / ultrasonic) threaded inserts for plastics, SPIROL Series 19, short and long, M2 to M4.

v1.0.0 Latest STEVE MIT 0

Open in STEVE

Isometric

Parameters

Preset8 sizes

Thread

M2M2.5M3M4

Length

shortlong

SPIROL Series 19 short or long.

Material2 options

Defaults built

part.py 29 lines · Python · STEVE runtime · checked

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"""Heat / ultrasonic inserts for plastics, SPIROL Series 19 (metric), short and long: M2, M2.5, M3, M4.

Envelope model: a cylinder of the overknurl diameter A and length L, axis along +Z, one end on the XY plane, centred on

the origin, with the thread drawn as a bore at its nominal diameter (not modelled). The knurl bands and the pilot (lead

-in) are not dimensioned in SPIROL's tables and are not modelled.

"""

from steve import Model

size = "M3" # Thread

variant = "short" # Length variant

material = "brass" # Material

# mm. SPIROL Series 19 short / long metric: (overknurl Ø A (Ref.), length L, recommended hole Ø), by thread

SHORT = {"M2": (3.58, 3.18, 3.20), "M2.5": (4.62, 3.56, 3.99), "M3": (4.62, 3.56, 3.99), "M4": (6.25, 4.70, 5.61)}

LONG = {"M2": (3.63, 3.99, 3.20), "M2.5": (4.75, 5.74, 3.99), "M3": (4.75, 5.74, 3.99), "M4": (6.38, 8.15, 5.61)}

THREAD = {"M2": 2.0, "M2.5": 2.5, "M3": 3.0, "M4": 4.0}

MATERIALS = {"brass": ("brass", "#c9a54a"), "aluminium": ("aluminum-generic", "#d4d7db")}

A, L, hole = {"short": SHORT, "long": LONG}[variant][size]

material_id, colour = MATERIALS[material]

model = Model()

with model.sketch("insert_sketch", on="XY", name="Insert") as sk:

sk.circle("outside", (0, 0), A / 2)

sk.circle("thread", (0, 0), THREAD[size] / 2)

model.extrude("insert", "insert_sketch", distance=L, name="Insert")

model.material(material_id, color=colour)

result = model.result()

"""Heat / ultrasonic inserts for plastics, SPIROL Series 19 (metric), short and long: M2, M2.5, M3, M4.

Envelope model: a cylinder of the overknurl diameter A and length L, axis along +Z, one end on the XY plane, centred on
the origin, with the thread drawn as a bore at its nominal diameter (not modelled). The knurl bands and the pilot (lead
-in) are not dimensioned in SPIROL's tables and are not modelled.
"""
from steve import Model

size = "M3"  # Thread
variant = "short"  # Length variant
material = "brass"  # Material

# mm. SPIROL Series 19 short / long metric: (overknurl Ø A (Ref.), length L, recommended hole Ø), by thread
SHORT = {"M2": (3.58, 3.18, 3.20), "M2.5": (4.62, 3.56, 3.99), "M3": (4.62, 3.56, 3.99), "M4": (6.25, 4.70, 5.61)}
LONG = {"M2": (3.63, 3.99, 3.20), "M2.5": (4.75, 5.74, 3.99), "M3": (4.75, 5.74, 3.99), "M4": (6.38, 8.15, 5.61)}
THREAD = {"M2": 2.0, "M2.5": 2.5, "M3": 3.0, "M4": 4.0}
MATERIALS = {"brass": ("brass", "#c9a54a"), "aluminium": ("aluminum-generic", "#d4d7db")}

A, L, hole = {"short": SHORT, "long": LONG}[variant][size]
material_id, colour = MATERIALS[material]

model = Model()
with model.sketch("insert_sketch", on="XY", name="Insert") as sk:
    sk.circle("outside", (0, 0), A / 2)
    sk.circle("thread", (0, 0), THREAD[size] / 2)
model.extrude("insert", "insert_sketch", distance=L, name="Insert")
model.material(material_id, color=colour)
result = model.result()

pypart.toml 87 lines · TOML

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name = "steve/heat-set-insert"

version = "1.0.0"

runtime = "steve"

license = "MIT"

summary = "Heat-set (heat / ultrasonic) threaded inserts for plastics, SPIROL Series 19, short and long, M2 to M4."

description = """Threaded inserts installed with heat or ultrasound into plastic parts: SPIROL Series 19 metric, short \

and long, M2, M2.5, M3 and M4. Envelope geometry: a cylinder of the overknurl diameter and length with the thread \

drawn as a plain bore; the knurl and the pilot are not modelled. The README lists the recommended hole diameters.

Axis along +Z, one end on the XY plane, centred on the origin. Dimensions: see the README."""

tags = ["insert", "heat-set-insert", "threaded-insert", "3d-printing", "plastics", "spirol", "metric"]

[parameters.size]

type = "choice"

default = "M3"

choices = ["M2", "M2.5", "M3", "M4"]

label = "Thread"

[parameters.variant]

type = "choice"

default = "short"

choices = ["short", "long"]

label = "Length"

description = "SPIROL Series 19 short or long."

[parameters.material]

type = "choice"

default = "brass"

choices = ["brass", "aluminium"]

label = "Material"

[[presets]]

id = "M2-short"

title = "M2 heat-set insert, short (SPIROL 151053, L 3.18)"

params = { size = "M2", variant = "short" }

aliases = ["SPIROL 151053", "M2 heat set insert short", "M2 threaded insert 3.18 mm", "M2 ultrasonic insert", "M2 heat insert for 3D printing"]

standard = "SPIROL Series 19"

[[presets]]

id = "M2-long"

title = "M2 heat-set insert, long (SPIROL 150949, L 3.99)"

params = { size = "M2", variant = "long" }

aliases = ["SPIROL 150949", "M2 heat set insert long", "M2 threaded insert 3.99 mm", "M2 ultrasonic insert", "M2 heat insert for 3D printing"]

standard = "SPIROL Series 19"

[[presets]]

id = "M2.5-short"

title = "M2.5 heat-set insert, short (SPIROL 151054, L 3.56)"

params = { size = "M2.5", variant = "short" }

aliases = ["SPIROL 151054", "M2.5 heat set insert short", "M2.5 threaded insert 3.56 mm", "M2.5 ultrasonic insert", "M2.5 heat insert for 3D printing"]

standard = "SPIROL Series 19"

[[presets]]

id = "M2.5-long"

title = "M2.5 heat-set insert, long (SPIROL 150989, L 5.74)"

params = { size = "M2.5", variant = "long" }

aliases = ["SPIROL 150989", "M2.5 heat set insert long", "M2.5 threaded insert 5.74 mm", "M2.5 ultrasonic insert", "M2.5 heat insert for 3D printing"]

standard = "SPIROL Series 19"

[[presets]]

id = "M3-short"

title = "M3 heat-set insert, short (SPIROL 150829, L 3.56)"

params = { size = "M3", variant = "short" }

aliases = ["SPIROL 150829", "M3 heat set insert short", "M3 threaded insert 3.56 mm", "M3 ultrasonic insert", "M3 heat insert for 3D printing"]

standard = "SPIROL Series 19"

[[presets]]

id = "M3-long"

title = "M3 heat-set insert, long (SPIROL 150419, L 5.74)"

params = { size = "M3", variant = "long" }

aliases = ["SPIROL 150419", "M3 heat set insert long", "M3 threaded insert 5.74 mm", "M3 ultrasonic insert", "M3 heat insert for 3D printing"]

standard = "SPIROL Series 19"

[[presets]]

id = "M4-short"

title = "M4 heat-set insert, short (SPIROL 150832, L 4.7)"

params = { size = "M4", variant = "short" }

aliases = ["SPIROL 150832", "M4 heat set insert short", "M4 threaded insert 4.7 mm", "M4 ultrasonic insert", "M4 heat insert for 3D printing"]

standard = "SPIROL Series 19"

[[presets]]

id = "M4-long"

title = "M4 heat-set insert, long (SPIROL 150421, L 8.15)"

params = { size = "M4", variant = "long" }

aliases = ["SPIROL 150421", "M4 heat set insert long", "M4 threaded insert 8.15 mm", "M4 ultrasonic insert", "M4 heat insert for 3D printing"]

standard = "SPIROL Series 19"

name = "steve/heat-set-insert"
version = "1.0.0"
runtime = "steve"
license = "MIT"
summary = "Heat-set (heat / ultrasonic) threaded inserts for plastics, SPIROL Series 19, short and long, M2 to M4."
description = """Threaded inserts installed with heat or ultrasound into plastic parts: SPIROL Series 19 metric, short \
and long, M2, M2.5, M3 and M4. Envelope geometry: a cylinder of the overknurl diameter and length with the thread \
drawn as a plain bore; the knurl and the pilot are not modelled. The README lists the recommended hole diameters.

Axis along +Z, one end on the XY plane, centred on the origin. Dimensions: see the README."""
tags = ["insert", "heat-set-insert", "threaded-insert", "3d-printing", "plastics", "spirol", "metric"]

[parameters.size]
type = "choice"
default = "M3"
choices = ["M2", "M2.5", "M3", "M4"]
label = "Thread"

[parameters.variant]
type = "choice"
default = "short"
choices = ["short", "long"]
label = "Length"
description = "SPIROL Series 19 short or long."

[parameters.material]
type = "choice"
default = "brass"
choices = ["brass", "aluminium"]
label = "Material"

[[presets]]
id = "M2-short"
title = "M2 heat-set insert, short (SPIROL 151053, L 3.18)"
params = { size = "M2", variant = "short" }
aliases = ["SPIROL 151053", "M2 heat set insert short", "M2 threaded insert 3.18 mm", "M2 ultrasonic insert", "M2 heat insert for 3D printing"]
standard = "SPIROL Series 19"

[[presets]]
id = "M2-long"
title = "M2 heat-set insert, long (SPIROL 150949, L 3.99)"
params = { size = "M2", variant = "long" }
aliases = ["SPIROL 150949", "M2 heat set insert long", "M2 threaded insert 3.99 mm", "M2 ultrasonic insert", "M2 heat insert for 3D printing"]
standard = "SPIROL Series 19"

[[presets]]
id = "M2.5-short"
title = "M2.5 heat-set insert, short (SPIROL 151054, L 3.56)"
params = { size = "M2.5", variant = "short" }
aliases = ["SPIROL 151054", "M2.5 heat set insert short", "M2.5 threaded insert 3.56 mm", "M2.5 ultrasonic insert", "M2.5 heat insert for 3D printing"]
standard = "SPIROL Series 19"

[[presets]]
id = "M2.5-long"
title = "M2.5 heat-set insert, long (SPIROL 150989, L 5.74)"
params = { size = "M2.5", variant = "long" }
aliases = ["SPIROL 150989", "M2.5 heat set insert long", "M2.5 threaded insert 5.74 mm", "M2.5 ultrasonic insert", "M2.5 heat insert for 3D printing"]
standard = "SPIROL Series 19"

[[presets]]
id = "M3-short"
title = "M3 heat-set insert, short (SPIROL 150829, L 3.56)"
params = { size = "M3", variant = "short" }
aliases = ["SPIROL 150829", "M3 heat set insert short", "M3 threaded insert 3.56 mm", "M3 ultrasonic insert", "M3 heat insert for 3D printing"]
standard = "SPIROL Series 19"

[[presets]]
id = "M3-long"
title = "M3 heat-set insert, long (SPIROL 150419, L 5.74)"
params = { size = "M3", variant = "long" }
aliases = ["SPIROL 150419", "M3 heat set insert long", "M3 threaded insert 5.74 mm", "M3 ultrasonic insert", "M3 heat insert for 3D printing"]
standard = "SPIROL Series 19"

[[presets]]
id = "M4-short"
title = "M4 heat-set insert, short (SPIROL 150832, L 4.7)"
params = { size = "M4", variant = "short" }
aliases = ["SPIROL 150832", "M4 heat set insert short", "M4 threaded insert 4.7 mm", "M4 ultrasonic insert", "M4 heat insert for 3D printing"]
standard = "SPIROL Series 19"

[[presets]]
id = "M4-long"
title = "M4 heat-set insert, long (SPIROL 150421, L 8.15)"
params = { size = "M4", variant = "long" }
aliases = ["SPIROL 150421", "M4 heat set insert long", "M4 threaded insert 8.15 mm", "M4 ultrasonic insert", "M4 heat insert for 3D printing"]
standard = "SPIROL Series 19"

README.md 52 lines · Markdown

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Heat-set insert (SPIROL Series 19, metric)

Threaded inserts for plastics, installed with heat or ultrasound: SPIROL Series 19 metric, short and long, M2 to M4. Presets cover the catalogue's generic short and long heat-set inserts, each mapped to SPIROL's short or long insert of that thread (SPIROL is the maker found with exactly one short and one long insert for each of M2, M2.5, M3 and M4).

Geometry

Envelope: a cylinder of the overknurl diameter A (a reference size) and length L, axis along +Z, one end on the XY plane, centred on the origin; the thread is drawn as a plain bore at its nominal diameter. The knurl bands and the pilot are not dimensioned in SPIROL's tables and are not modelled.

Parameters

Parameter	Meaning
`size`	Thread: M2, M2.5, M3, M4
`variant`	`short` or `long`
`material`	`brass` (CuZn36Pb3) or `aluminium` (SPIROL offers both)

Sources

SPIROL, Series 19 Short Heat / Ultrasonic Insert — Metric, online catalogue table: https://shop.spirol.com/viewitems/series-19-20-short-heat-ultrasonic-insert-metric/series-19-short-heat-ultrasonic-insert-metric?pcat=euro
SPIROL, Series 19 Long Heat / Ultrasonic Insert — Metric: https://shop.spirol.com/viewitems/series-19-20-long-heat-ultrasonic-insert-metric/series-19-long-heat-ultrasonic-insert-metric?pcat=euro
Recommended hole diameters (+0.08 / −0): SPIROL item print pages of the items below (https://shop.spirol.com/.../printitem/...) and SPIROL's white paper How to Design the Proper Hole for Heat / Ultrasonic Inserts (© 2022, https://uk.spirol.com/assets/files/ins-wp-how-to-design-the-proper-hole-for-heat-ultrasonic-inserts-uk.pdf): minimum hole depth L + 2 thread pitches, hole taper at most 1° included.

Thread	Variant	SPIROL item (brass)	Overknurl Ø A	Length L	Hole Ø
M2 × 0.4	short	151053	3.58	3.18	3.20
M2 × 0.4	long	150949	3.63	3.99	3.20
M2.5 × 0.45	short	151054	4.62	3.56	3.99
M2.5 × 0.45	long	150989	4.75	5.74	3.99
M3 × 0.5	short	150829	4.62	3.56	3.99
M3 × 0.5	long	150419	4.75	5.74	3.99
M4 × 0.7	short	150832	6.25	4.70	5.61
M4 × 0.7	long	150421	6.38	8.15	5.61

Aluminium items of the same sizes: 325155, 325126 (M2), 325156, 325129 (M2.5), 325157, 325130 (M3), 243879, 311471 (M4).

Other makers checked: CNC Kitchen (M2 × 3, M2.5 × 4, M3 × 3 short, M3 × 5.7, M4 × 4 short, M4 × 8.1; official table https://cnckitchen.store/cdn/shop/files/table_metric.png) and ruthex have no short M2 or M2.5, so they do not cover the catalogue's eight entries.

Preset list: sizes of the step.parts catalogue (MIT), see library/NOTICE.md.

# Heat-set insert (SPIROL Series 19, metric)

Threaded inserts for plastics, installed with heat or ultrasound: SPIROL Series 19 metric, **short** and **long**, M2

to M4. Presets cover the catalogue's generic short and long heat-set inserts, each mapped to SPIROL's short or long

insert of that thread (SPIROL is the maker found with exactly one short and one long insert for each of M2, M2.5, M3

and M4).

## Geometry

Envelope: a cylinder of the overknurl diameter **A** (a reference size) and length **L**, axis along +Z, one end on the

XY plane, centred on the origin; the thread is drawn as a plain bore at its nominal diameter. The knurl bands and the

pilot are not dimensioned in SPIROL's tables and are not modelled.

## Parameters

| Parameter | Meaning |

|---|---|

| `size` | Thread: M2, M2.5, M3, M4 |

| `variant` | `short` or `long` |

| `material` | `brass` (CuZn36Pb3) or `aluminium` (SPIROL offers both) |

## Sources

- SPIROL, *Series 19 Short Heat / Ultrasonic Insert — Metric*, online catalogue table:

https://shop.spirol.com/viewitems/series-19-20-short-heat-ultrasonic-insert-metric/series-19-short-heat-ultrasonic-insert-metric?pcat=euro

- SPIROL, *Series 19 Long Heat / Ultrasonic Insert — Metric*:

https://shop.spirol.com/viewitems/series-19-20-long-heat-ultrasonic-insert-metric/series-19-long-heat-ultrasonic-insert-metric?pcat=euro

- Recommended hole diameters (+0.08 / −0): SPIROL item print pages of the items below

(https://shop.spirol.com/.../printitem/...) and SPIROL's white paper *How to Design the Proper Hole for Heat /

minimum hole depth L + 2 thread pitches, hole taper at most 1° included.

|---|---|---|---|---|---|

| M2 × 0.4 | short | 151053 | 3.58 | 3.18 | 3.20 |

| M2 × 0.4 | long | 150949 | 3.63 | 3.99 | 3.20 |

| M2.5 × 0.45 | short | 151054 | 4.62 | 3.56 | 3.99 |

| M2.5 × 0.45 | long | 150989 | 4.75 | 5.74 | 3.99 |

| M3 × 0.5 | short | 150829 | 4.62 | 3.56 | 3.99 |

| M3 × 0.5 | long | 150419 | 4.75 | 5.74 | 3.99 |

| M4 × 0.7 | short | 150832 | 6.25 | 4.70 | 5.61 |

| M4 × 0.7 | long | 150421 | 6.38 | 8.15 | 5.61 |

Aluminium items of the same sizes: 325155, 325126 (M2), 325156, 325129 (M2.5), 325157, 325130 (M3), 243879, 311471

(M4).

Other makers checked: CNC Kitchen (M2 × 3, M2.5 × 4, M3 × 3 short, M3 × 5.7, M4 × 4 short, M4 × 8.1; official table

https://cnckitchen.store/cdn/shop/files/table_metric.png) and ruthex have no short M2 or M2.5, so they do not cover the

catalogue's eight entries.

Preset list: sizes of the step.parts catalogue (MIT), see `library/NOTICE.md`.

# Heat-set insert (SPIROL Series 19, metric)

Threaded inserts for plastics, installed with heat or ultrasound: SPIROL Series 19 metric, **short** and **long**, M2
to M4. Presets cover the catalogue's generic short and long heat-set inserts, each mapped to SPIROL's short or long
insert of that thread (SPIROL is the maker found with exactly one short and one long insert for each of M2, M2.5, M3
and M4).

## Geometry

Envelope: a cylinder of the overknurl diameter **A** (a reference size) and length **L**, axis along +Z, one end on the
XY plane, centred on the origin; the thread is drawn as a plain bore at its nominal diameter. The knurl bands and the
pilot are not dimensioned in SPIROL's tables and are not modelled.

## Parameters

| Parameter | Meaning |
|---|---|
| `size` | Thread: M2, M2.5, M3, M4 |
| `variant` | `short` or `long` |
| `material` | `brass` (CuZn36Pb3) or `aluminium` (SPIROL offers both) |

## Sources

- SPIROL, *Series 19 Short Heat / Ultrasonic Insert — Metric*, online catalogue table:
  https://shop.spirol.com/viewitems/series-19-20-short-heat-ultrasonic-insert-metric/series-19-short-heat-ultrasonic-insert-metric?pcat=euro
- SPIROL, *Series 19 Long Heat / Ultrasonic Insert — Metric*:
  https://shop.spirol.com/viewitems/series-19-20-long-heat-ultrasonic-insert-metric/series-19-long-heat-ultrasonic-insert-metric?pcat=euro
- Recommended hole diameters (+0.08 / −0): SPIROL item print pages of the items below
  (https://shop.spirol.com/.../printitem/...) and SPIROL's white paper *How to Design the Proper Hole for Heat /
  Ultrasonic Inserts* (© 2022, https://uk.spirol.com/assets/files/ins-wp-how-to-design-the-proper-hole-for-heat-ultrasonic-inserts-uk.pdf):
  minimum hole depth L + 2 thread pitches, hole taper at most 1° included.

| Thread | Variant | SPIROL item (brass) | Overknurl Ø A | Length L | Hole Ø |
|---|---|---|---|---|---|
| M2 × 0.4 | short | 151053 | 3.58 | 3.18 | 3.20 |
| M2 × 0.4 | long | 150949 | 3.63 | 3.99 | 3.20 |
| M2.5 × 0.45 | short | 151054 | 4.62 | 3.56 | 3.99 |
| M2.5 × 0.45 | long | 150989 | 4.75 | 5.74 | 3.99 |
| M3 × 0.5 | short | 150829 | 4.62 | 3.56 | 3.99 |
| M3 × 0.5 | long | 150419 | 4.75 | 5.74 | 3.99 |
| M4 × 0.7 | short | 150832 | 6.25 | 4.70 | 5.61 |
| M4 × 0.7 | long | 150421 | 6.38 | 8.15 | 5.61 |

Aluminium items of the same sizes: 325155, 325126 (M2), 325156, 325129 (M2.5), 325157, 325130 (M3), 243879, 311471
(M4).

Other makers checked: CNC Kitchen (M2 × 3, M2.5 × 4, M3 × 3 short, M3 × 5.7, M4 × 4 short, M4 × 8.1; official table
https://cnckitchen.store/cdn/shop/files/table_metric.png) and ruthex have no short M2 or M2.5, so they do not cover the
catalogue's eight entries.

Preset list: sizes of the step.parts catalogue (MIT), see `library/NOTICE.md`.

Use this part

STEVE

Open in STEVE

Open it in STEVE The STEVE runtime runs in STEVE: open the part there, or download the code and bundle.

Get the code

curl -o part.py "https://pythonparts.org/p/steve/heat-set-insert/v/1.0.0/raw/part.py"

Raw files, bundle and API

part.py
pypart.toml
README.md
bundle.tar.gzthe package, as published

curl "https://pythonparts.org/api/v1/parts/steve/heat-set-insert/1.0.0"

The version's JSON (parameters, presets, files); add /build?name=value for a build at other values.

About this part

steve58 parts

Profile

Brass (generic)Copper alloys · Custom finish · 8.6 g/cm³

Mass: 0.3 g

At the parameters shown in the viewer.

License: MIT

Permissive: use, change and sell it; keep the copyright notice.

Runtime: STEVE
Built with: CadQuery 2.9.0.dev0
Published: Nov 1, 2026
Downloads: 0
Builds: 0
Stars: 0
Bundle: d49d51f70713…

#insert #heat-set-insert #threaded-insert #3d-printing #plastics #spirol #metric

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Threaded inserts installed with heat or ultrasound into plastic parts: SPIROL Series 19 metric, short and long, M2, M2.5, M3 and M4. Envelope geometry: a cylinder of the overknurl diameter and length with the thread drawn as a plain bore; the knurl and the pilot are not modelled. The README lists the recommended hole diameters. Axis along +Z, one end on the XY plane, centred on the origin. Dimensions: see the README.

Heat-set insert (SPIROL Series 19, metric)

Geometry

Parameters

Parameter	Meaning
`size`	Thread: M2, M2.5, M3, M4
`variant`	`short` or `long`
`material`	`brass` (CuZn36Pb3) or `aluminium` (SPIROL offers both)

Sources

SPIROL, Series 19 Short Heat / Ultrasonic Insert — Metric, online catalogue table: https://shop.spirol.com/viewitems/series-19-20-short-heat-ultrasonic-insert-metric/series-19-short-heat-ultrasonic-insert-metric?pcat=euro
SPIROL, Series 19 Long Heat / Ultrasonic Insert — Metric: https://shop.spirol.com/viewitems/series-19-20-long-heat-ultrasonic-insert-metric/series-19-long-heat-ultrasonic-insert-metric?pcat=euro
Recommended hole diameters (+0.08 / −0): SPIROL item print pages of the items below (https://shop.spirol.com/.../printitem/...) and SPIROL's white paper How to Design the Proper Hole for Heat / Ultrasonic Inserts (© 2022, https://uk.spirol.com/assets/files/ins-wp-how-to-design-the-proper-hole-for-heat-ultrasonic-inserts-uk.pdf): minimum hole depth L + 2 thread pitches, hole taper at most 1° included.

Thread	Variant	SPIROL item (brass)	Overknurl Ø A	Length L	Hole Ø
M2 × 0.4	short	151053	3.58	3.18	3.20
M2 × 0.4	long	150949	3.63	3.99	3.20
M2.5 × 0.45	short	151054	4.62	3.56	3.99
M2.5 × 0.45	long	150989	4.75	5.74	3.99
M3 × 0.5	short	150829	4.62	3.56	3.99
M3 × 0.5	long	150419	4.75	5.74	3.99
M4 × 0.7	short	150832	6.25	4.70	5.61
M4 × 0.7	long	150421	6.38	8.15	5.61

Aluminium items of the same sizes: 325155, 325126 (M2), 325156, 325129 (M2.5), 325157, 325130 (M3), 243879, 311471 (M4).

Preset list: sizes of the step.parts catalogue (MIT), see library/NOTICE.md.

1.0.0 Latest Nov 1, 2026 · 1 day ago

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steve/hex-head-screw

Hexagon head screw, fully threaded, ISO 4017 / DIN 933, M1.6 to M36, any length, with catalogue sizes as presets.

18 85 sizes 0 1 day ago v2.0.0

STEVEMIT

steve/button-head-screw

Hexagon socket button head screw, ISO 7380-1, M3 to M16, any length, with catalogue sizes as presets.

10 65 sizes 0 1 day ago v2.0.0

STEVEMIT

steve/hex-nut

Hex nut, ISO 4032, M2 to M12.

7 9 variants 0 2 days ago v1.1.0

STEVEMIT

steve/plate

Rectangular plate blank, any width, length and thickness, in common plate and sheet materials.

4 45 sizes 0 1 day ago v1.0.0

steve/heat-set-insert

Heat-set insert (SPIROL Series 19, metric)

Geometry

Parameters

Sources

Heat-set insert (SPIROL Series 19, metric)

Geometry

Parameters

Sources

Related parts

steve/hex-head-screw

steve/button-head-screw

steve/hex-nut

steve/plate