# Clevis pin with head (ISO 2341 / DIN 1444)

Clevis pin with head, type A (plain) or type B (with a split-pin hole), d 4 to 24 mm, any length, with catalogue
sizes as presets (type B).

## Geometry

Head of diameter **dk** and height **k**; shank of the nominal diameter **d** and length **l** under the head; for
type B a cross hole **d1** for the split pin, its axis **le** (min) from the end. The head's edge radius and the
shank's end chamfer are not modelled. The head's bearing face is on the XY plane at the origin, the head above it,
the shank along -Z; the cross hole runs along Y.

## Parameters

| Parameter | Meaning |
|---|---|
| `diameter` | Nominal diameter d, mm |
| `length` | Length l under the head, mm |
| `pin_type` | `A` plain, `B` with split-pin hole |
| `material` | `steel`, `stainless-a2` |

## Source

ISO 2341:1986, *Clevis pins with head*, dimension table: dk (h14), k (js14), d1 (H13), le min (mm), read from the
reproductions at <https://www.globalfastener.com/standards/detail_252.html> (with the tolerance limits, which confirm k 5.5 for d 22 and 6 for d 24) and
<https://www.fasteners.eu/standards/ISO/2341/>. fasten.it's DIN EN 22341:1992-10 page gives k 5 and 6.3 for d 22 and 24 (the d1 values,
apparently shifted into the k column); the ISO 2341 values are used.

| d | dk | k | d1 | le min |
|---|---|---|---|---|
| 4 | 6 | 1 | 1 | 2.2 |
| 5 | 8 | 1.6 | 1.2 | 2.9 |
| 6 | 10 | 2 | 1.6 | 3.2 |
| 8 | 14 | 3 | 2 | 3.5 |
| 10 | 18 | 4 | 3.2 | 4.5 |
| 12 | 20 | 4 | 3.2 | 5.5 |
| 14 | 22 | 4 | 4 | 6 |
| 16 | 25 | 4.5 | 4 | 6 |
| 18 | 28 | 5 | 5 | 7 |
| 20 | 30 | 5 | 5 | 8 |
| 22 | 33 | 5.5 | 5 | 8 |
| 24 | 36 | 6 | 6.3 | 9 |

Preset list: sizes of the step.parts catalogue (MIT), see `library/NOTICE.md`. The catalogue's generic clevis pins name no standard; their presets are ISO 2341 type B. Its 3 mm pins have no preset (the table starts at d = 4).