# Clevis pins ISO 2341 B, Ø3 to Ø8

> What are the dimensions of an ISO 2341 clevis pin with a split-pin hole?

- Category: Hardware › Motion
- Kind: Hardware
- Basis: ISO 2341 form B clevis pin: head Ø and height, split-pin hole Ø and its axis distance from the shank end
- Page: https://xemstudio.com/objects/clevis-pins/ · JSON: https://xemstudio.com/api/geometry?object=clevis-pins · Plain text: https://xemstudio.com/objects/clevis-pins/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses

**Exact dimensions.** Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part.

## Notes

- A plain shank with a head on one end and a cross-hole for a split pin near the other. The shank length L is measured under the head, so each file is L plus the head height overall (Ø3 × 12 is 13 long, Ø8 × 40 is 43).
- Head Ø × height, cross-hole Ø and hole axis from the shank end, by pin Ø: 3 → 5 × 1, 0.8, 1.6; 4 → 6 × 1, 1.0, 2.2; 5 → 8 × 1.6, 1.2, 2.9; 6 → 10 × 2, 1.6, 3.2; 8 → 14 × 3, 2.0, 3.5.
- The shank is drawn at the pin Ø exactly. The holes it passes through on a clevis or link are drawn at the same Ø; which joints turn on the pin and which hold it fixed is listed under Mating features.
- The cross-hole takes an ISO 1234 split pin of the same nominal size (0.8 hole, 0.8 split pin). The R-clips in this library have a 1.2 wire, which passes the Ø1.2, Ø1.6 and Ø2.0 cross-holes of the Ø5, Ø6 and Ø8 pins.

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| pin shank | Ø3 / 4 / 5 / 6 / 8 | clevis and link holes | run | clevis-pin-* |
| split-pin hole | Ø0.8 / 1.0 / 1.2 / 1.6 / 2.0 (ISO 2341) | ISO 1234 split pin of that size | designed | clevis-pin-* |
| pin hole | Ø3 / Ø5 / Ø6 | clevis pin (turns in it) | run | clevis-* |
| fork gap | 5 / 8 / 10 / 12 | link of that thickness | run | clevis-* |
| shank thread hole | Ø2.5 | M3 tap drill (pushrod) | designed | clevis-* |

## Sizes

| pin Ø | length L | overall | head Ø × height | cross-hole Ø | hole axis from end |
|---|---|---|---|---|---|
| 3 | 12 | 13 | 5 × 1 | 0.8 | 1.6 |
| 3 | 20 | 21 | 5 × 1 | 0.8 | 1.6 |
| 4 | 20 | 21 | 6 × 1 | 1.0 | 2.2 |
| 5 | 20 | 21.6 | 8 × 1.6 | 1.2 | 2.9 |
| 5 | 30 | 31.6 | 8 × 1.6 | 1.2 | 2.9 |
| 6 | 30 | 32 | 10 × 2 | 1.6 | 3.2 |
| 8 | 40 | 43 | 14 × 3 | 2.0 | 3.5 |

## Where the files are

- Wikipedia: [Clevis fastener](https://en.wikipedia.org/wiki/Clevis_fastener) — web — CC BY-SA 4.0 (text)
- Wikipedia: [Universal joint](https://en.wikipedia.org/wiki/Universal_joint) — web — CC BY-SA 4.0 (text)
- Wikipedia: [Rod end bearing](https://en.wikipedia.org/wiki/Rod_end_bearing) — web — CC BY-SA 4.0 (text)
- McMaster-Carr: [Clevis pins (free STEP per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/clevis-pins/) — STEP, PDF — McMaster-Carr site terms (verify at link)
- McMaster-Carr: [Rod ends (free STEP per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/ball-joint-rod-ends/) — STEP, PDF — McMaster-Carr site terms (verify at link)
- Long Earth Society: [Engine and rig builds](https://longearthsociety.com/engineering/) — web, video — LES site

## Free STEP/STL (7 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/clevis-pins/index.json

- clevis-pin-3x12: [STEP](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-3x12.step) · [STL](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-3x12.stl) — ISO 2341 B clevis pin Ø3 × 12: head Ø5 × 1, Ø0.8 split-pin hole 1.6 from the end
- clevis-pin-3x20: [STEP](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-3x20.step) · [STL](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-3x20.stl) — ISO 2341 B clevis pin Ø3 × 20: head Ø5 × 1, Ø0.8 split-pin hole 1.6 from the end
- clevis-pin-4x20: [STEP](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-4x20.step) · [STL](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-4x20.stl) — ISO 2341 B clevis pin Ø4 × 20: head Ø6 × 1, Ø1 split-pin hole 2.2 from the end
- clevis-pin-5x20: [STEP](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-5x20.step) · [STL](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-5x20.stl) — ISO 2341 B clevis pin Ø5 × 20: head Ø8 × 1.6, Ø1.2 split-pin hole 2.9 from the end
- clevis-pin-5x30: [STEP](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-5x30.step) · [STL](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-5x30.stl) — ISO 2341 B clevis pin Ø5 × 30: head Ø8 × 1.6, Ø1.2 split-pin hole 2.9 from the end
- clevis-pin-6x30: [STEP](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-6x30.step) · [STL](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-6x30.stl) — ISO 2341 B clevis pin Ø6 × 30: head Ø10 × 2, Ø1.6 split-pin hole 3.2 from the end
- clevis-pin-8x40: [STEP](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-8x40.step) · [STL](https://xemstudio.com/files/hardware/pins-clevises-and-joints/clevis-pin-8x40.stl) — ISO 2341 B clevis pin Ø8 × 40: head Ø14 × 3, Ø2 split-pin hole 3.5 from the end

## How it fits

### Goes in or on
- [Clevises with M3 tapped shank: Ø3, Ø5 and Ø6 pins, 5 to 12 mm gaps](https://xemstudio.com/objects/clevises/): Ø3 / Ø5 / Ø6 pin across the fork's Ø3 / Ø5 / Ø6 hole

### Connects to
- [R-clips (hairpin cotters) for Ø2 to Ø6 pins](https://xemstudio.com/objects/r-clips/): 1.2 wire through the Ø1.2–Ø2.0 cross-hole
- [Four-bar links: flat links with 20 to 100 mm hole centres](https://xemstudio.com/objects/four-bar-links/): pin through the link's pivot hole

### Alternatives
- [Dowel pins, 2–6 mm (ISO 2338 / DIN 6325)](https://xemstudio.com/objects/dowel-pins-metric/): headless pin of the same Ø

## Questions

**What are the dimensions of a 5 mm clevis pin?**

ISO 2341 B Ø5: head Ø8 × 1.6, split-pin hole Ø1.2 with its axis 2.9 mm from the end. The Ø5 × 20 file is 21.6 mm overall.

**What size split pin goes in a clevis pin?**

The split-pin size equals the cross-hole Ø: 0.8 for a Ø3 pin, 1.0 for Ø4, 1.2 for Ø5, 1.6 for Ø6, 2.0 for Ø8.

**How long is a clevis pin measured?**

Under the head: a Ø3 × 20 pin has a 20 mm shank and a 1 mm head, 21 mm overall.

## Fits with

- [R-clips (hairpin cotters) for Ø2 to Ø6 pins](https://xemstudio.com/objects/r-clips/)
- [Clevises with M3 tapped shank: Ø3, Ø5 and Ø6 pins, 5 to 12 mm gaps](https://xemstudio.com/objects/clevises/)
- [Dowel pins, 2–6 mm (ISO 2338 / DIN 6325)](https://xemstudio.com/objects/dowel-pins-metric/)
- [Four-bar links: flat links with 20 to 100 mm hole centres](https://xemstudio.com/objects/four-bar-links/)
- [Bell cranks: 30 × 30 and 20 × 40 mm arms at 90°](https://xemstudio.com/objects/bell-cranks/)