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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? · 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
Also called: rod end m8 dimensions, rod end m10 dimensions, rod end m6 dimensions, rod end m12 dimensions, heim joint 8mm, heim joint 10mm, heim joint dimensions, rod end 8mm bore, din iso 12240-4 rod end, female rod end m8, male rod end m8, rod end m5, rod end m16, ball joint rod end dimensions, rod end cad
Exact dimensions. True size, with no tolerance added.
- sizes
- 9 in table
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.
Rod ends / heim joints DIN ISO 12240-4 series K, 5 to 20 mm: bore… size chart
| 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
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| 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 | 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 | 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 | 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) | STEP, IGES, PDF | McMaster-Carr site terms: personal design use, no redistribution verify |
Xem scan
File coming
No downloadable true-size file yet: the published figures do not fix the whole shape, and Xem never guesses a number. A measured scan is planned; request it and it moves up.
https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=rod-ends-din-iso-12240-4
Fits with






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.