# Rod ends / heim joints DIN ISO 12240-4 series K, 5 to 20 mm: bore, ball width, head diameter, thread, length (male and female)

> What are the dimensions of a 6 mm, 8 mm, 10 mm and 12 mm rod end (heim joint) to DIN ISO 12240-4: bore, width, head diameter, thread and length?

- Category: Hardware › Bearings, rails & motion
- Kind: Standard part
- Basis: Maedler K43_803 table, M8 female row checked against Ameco; one series E male (Schaeffler GAR10-DO); McMaster-Carr linked for CAD
- Page: https://xemstudio.com/objects/rod-ends-din-iso-12240-4/ · JSON: https://xemstudio.com/api/geometry?object=rod-ends-din-iso-12240-4 · Plain text: https://xemstudio.com/objects/rod-ends-din-iso-12240-4/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
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**Exact dimensions.** True size, with no tolerance added.

## Notes

- Rod ends (heim joints, ball joint rod ends) are a spherical plain bearing in an eye with a threaded shank: male (a threaded stud, AR / AL) or female (a threaded hole, IR / IL), right-hand or left-hand thread. Series K to DIN ISO 12240-4 is the table used here; the bore tolerance in the source is H7 and the female thread is ISO 6H.
- Numbers: Maedler's K43_803 table (nine sizes, 5 to 20 mm). The M8 female row matches Ameco's rod end sheet (bore 8, B 12, C1 9, d2 24, d3 12.5, d4 16, h1 36, l3 16) exactly. The B, C1, d1 and d2 columns are the same on the male and the female type in the source table (asserted); the remaining columns differ and are shown separately as female / male. The letters are the source's and are not interpreted here. G, α and weight columns of the source were not legible and are left out.
- A series E male rod end for comparison, Schaeffler GAR10-DO: bore 10, ball width B 9, ball Ø dK 16, head Ø d1 13.2, d2 29, h 48, C1 7, l1 26, l2 62.5, α 12°, thread M10 (single source).
- Files: none. A solid needs the eye shape, the shank flats and the thread run-out, which are not in the tables.
- Left out: the other rod-end lines (Igus, Misumi), series E tables other than GAR10, the L (left-hand) variants' tolerance, load ratings, chamfers.

## Sizes

| series K size | bore d, mm | B, mm | C1, mm | d1, mm | d2, mm | female: d3, mm | female: d4, mm | female: h1, mm | female: l, mm | male: h, mm | male: l, mm | thread |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| K 5 | 5 | 8 | 6 | 7.7 | 18 | 9 | 11 | 27 | 10 | 33 | 20 | M5 |
| K 6 | 6 | 9 | 6.75 | 8.9 | 20 | 10 | 13 | 30 | 12 | 36 | 22 | M6 |
| K 8 | 8 | 12 | 9 | 10.4 | 24 | 12.5 | 16 | 36 | 16 | 42 | 25 | M8 |
| K 10 | 10 | 14 | 10.5 | 12.9 | 28 | 15 | 19 | 43 | 20 | 48 | 29 | M10 |
| K 12 | 12 | 16 | 12 | 15.4 | 32 | 17.5 | 22 | 50 | 22 | 54 | 33 | M12 |
| K 14 | 14 | 19 | 13.5 | 16.8 | 36 | 20 | 25 | 57 | 25 | 60 | 36 | M14 |
| K 16 | 16 | 21 | 15 | 19.3 | 42 | 22 | 27 | 64 | 28 | 66 | 40 | M16 |
| K 18 | 18 | 23 | 16.5 | 21.8 | 46 | 25 | 31 | 71 | 32 | 72 | 44 | M18x1.5 |
| K 20 | 20 | 25 | 18 | 24.3 | 50 | 27.5 | 34 | 77 | 33 | 78 | 47 | M20x1.5 |

## Where the files are

- Maedler (Mercateo data sheet K43_803): [Rod ends DIN ISO 12240-4 series K, male (AR / AL) and female (IR / IL), d 5 to 20: B, C1, d1, d2, h, l, thread](https://static.mercateo.com/c0/e2d28082af85416a8a9b3a6f8a237259/pdf/K43_803_EN.pdf) — web — Publisher's page; dimensions are facts
- Ameco: [Rod end BR DIN ISO 12240-4 (DIN 648) series K, internal thread M8, right hand: d 8, B 12, C1 9, d2 24, d3 12.5, d4 16, h1 36, l3 16](https://eshop.ameco.cz/products/en/1126/2229/2233/g1688/63240800) — web — Publisher's page; dimensions are facts
- Schaeffler (via Misumi data sheet): [GAR10-DO male rod end, DIN ISO 12240-4 dimension series E: d 10, B 9, dK 16, d2 29, h 48, C1 7, l1 26, l2 62.5](https://uk.misumi-ec.com/pdf/ds/INA1/INA1_F0002780235_EN.pdf) — web — Publisher's page; dimensions are facts
- McMaster-Carr: [Ball joint rod ends (free STEP/IGES per part, for your own design use; no redistribution)](https://www.mcmaster.com/ball-joint-rod-ends) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link)

## Questions

**What are the dimensions of an M8 rod end?**

Series K 8: bore 8, B 12, C1 9, d1 10.4, d2 24; female d3 12.5, d4 16, h1 36, l 16; male h 42, l 25; thread M8.

**What is the difference between male and female rod ends?**

Male has a threaded stud, female has a threaded hole: the head and bore are the same, the shank differs.

**What are the dimensions of an M10 rod end?**

Series K 10: bore 10, B 14, C1 10.5, d1 12.9, d2 28; female h1 43, l 20; male h 48, l 29; thread M10.

**What is series K in DIN ISO 12240-4?**

A dimension series of rod ends in the standard; the table here is series K, with one series E male part (Schaeffler GAR10) listed for comparison.

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