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Clevis Fork Dimensions (DIN 71752 Form G, 4 to 25 mm)

Guide · Updated October 28, 2026

DIN 71752 covers clevis forks (rod-end yokes) in form G. This chart runs from G 4x8 to G 25x50. Values agree across the Gebert DIN 71752 table, the Wilh. Wernecke DIN 71752 G datasheet and fasten.it. fasteners.eu agrees up to G 16. Check your supplier for critical work.

Step by step

1. Pick the size: The size is d1 x g, pin hole x slot depth, e.g. G 10x20. Each pin size comes in a short and a long slot.
2. Check the slot: b1 (B13) is the slot width for the mating eye or plate. g is the slot depth and a1 the fork width.
3. Check the thread: d2 is the female thread for the rod. d3 is the body diameter and l3 the thread depth.
4. Check the lengths: l1 is the overall length and l2 the distance from the pin centre to the thread end.
5. Pin it: Use an ISO 2341 or DIN 1445 clevis pin of diameter d1, with ISO 8738 washers.

DIN 71752 clevis fork dimensions (mm)

Columns: size, pin hole d1 (H9), slot depth g, fork width a1, slot width b1 (B13), thread d2, body diameter d3, chamfer f, overall length l1, pin centre to end l2, thread depth l3, radius r.

• Size | d1 | g | a1 | b1 | d2 | d3 | f | l1 | l2 | l3 | r
• 4x8 | 4 | 8 | 8 | 4 | M4 | 8 | 0.5 | 21 | 16 | 6 | 0.5
• 4x16 | 4 | 16 | 8 | 4 | M4 | 8 | 0.5 | 29 | 24 | 6 | 0.5
• 5x10 | 5 | 10 | 10 | 5 | M5 | 9 | 0.5 | 26 | 20 | 7.5 | 0.5
• 5x20 | 5 | 20 | 10 | 5 | M5 | 9 | 0.5 | 36 | 30 | 7.5 | 0.5
• 6x12 | 6 | 12 | 12 | 6 | M6 | 10 | 0.5 | 31 | 24 | 9 | 0.5
• 6x24 | 6 | 24 | 12 | 6 | M6 | 10 | 0.5 | 43 | 36 | 9 | 0.5
• 8x16 | 8 | 16 | 16 | 8 | M8 | 14 | 0.5 | 42 | 32 | 12 | 0.5
• 8x32 | 8 | 32 | 16 | 8 | M8 | 14 | 0.5 | 58 | 48 | 12 | 0.5
• 10x20 | 10 | 20 | 20 | 10 | M10 | 18 | 0.5 | 52 | 40 | 15 | 0.5
• 10x40 | 10 | 40 | 20 | 10 | M10 | 18 | 0.5 | 72 | 60 | 15 | 0.5
• 12x24 | 12 | 24 | 24 | 12 | M12 | 20 | 0.5 | 62 | 48 | 18 | 0.5
• 12x48 | 12 | 48 | 24 | 12 | M12 | 20 | 0.5 | 86 | 72 | 18 | 0.5
• 14x28 | 14 | 28 | 27 | 14 | M14 | 24 | 1 | 72 | 56 | 22.5 | 1
• 14x56 | 14 | 56 | 27 | 14 | M14 | 24 | 1 | 101 | 85 | 22.5 | 1
• 16x32 | 16 | 32 | 32 | 16 | M16 | 26 | 1 | 83 | 64 | 24 | 1
• 16x64 | 16 | 64 | 32 | 16 | M16 | 26 | 1 | 115 | 96 | 24 | 1
• 18x36 | 18 | 36 | 36 | 18 | M18 | 30 | 1 | 94 | 72 | 27 | 1.5
• 20x40 | 20 | 40 | 40 | 20 | M20 | 34 | 1 | 105 | 80 | 30 | 1.5
• 20x80 | 20 | 80 | 40 | 20 | M20 | 34 | 1 | 145 | 120 | 30 | 1.5
• 25x50 | 25 | 50 | 50 | 25 | M24 | 42 | 1.5 | 132 | 100 | 36 | 1.5

Worked example: G 10x20 clevis fork

A G 10x20 fork takes an M10 rod thread 15 mm deep and a 10 mm clevis pin. The slot is 10 mm wide and 20 mm deep. The pin centre sits 40 mm from the thread end, and the fork is 52 mm long overall.

Common problems

• Eye will not enter: check the mating part fits b1, not d1.
• Fork unscrews: lock it with a jam nut on the rod.
• Pin wears oval: use a hardened pin and grease it.

FAQ

What is DIN 71752?

The standard clevis fork (Gabelkopf), a yoke with a female thread for a rod and a cross hole for a clevis pin. It is used on pneumatic cylinders, linkages and throttle rods.

Which pin fits?

A clevis pin of diameter d1, e.g. ISO 2341 with a split pin, or DIN 1445 with a nut. The fork hole is H9.

Why no fine thread column?

Sources disagree on the fine pitch for 12 mm (M12x1.25 vs M12x1.5), so only the coarse thread is shown. Weight is also left out because one table has a typo.

Why stop at 25 mm?

Forks from 28 to 42 mm are listed by only some of the sources, so we left them out.

What was skipped?

Fine-thread sizes, a2 and b2 tolerances, weight and the 28 to 42 mm sizes.

Related guides and calculators

• Spring cotter pins (DIN 11024)
• Clevis pins with threaded end (DIN 1445)
• Metric clevis pins (ISO 2341 / DIN 1444)
• Headless clevis pins (ISO 2340 / DIN 1434)
• Clevis pin washers (ISO 8738 / DIN 1440)
• All free machinist calculators

General shop information only — follow your drawing, tool maker's data and your quality system.