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Knurled Thumb Nut Dimensions, Tall Type (DIN 466, M2 to M10)
Guide · Updated October 28, 2026
DIN 466 covers tall knurled thumb nuts, from M2 to M10. The values agree across Lederer, Elesa-Ganter and fasteners.eu. Nominal (max) values are shown. Check your supplier for critical work.
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Step by step
- Match the thread: Check the stud size and coarse pitch.
- Check clearance: Allow room for the knurl diameter dk plus your fingers.
- Seat the collar: The collar ds faces the part.
- Hand tighten: No tools are needed.
- Lock if needed: Add a lock washer for vibration.
DIN 466 tall knurled thumb nut dimensions (mm)
Columns: thread, pitch P, knurl diameter dk, collar diameter ds, overall height h, knurl height k.
- Size | P | dk | ds | h | k
- M2 | 0.4 | 9 | 4.5 | 5.3 | 2
- M2.5 | 0.45 | 11 | 5 | 6.5 | 2.5
- M3 | 0.5 | 12 | 6 | 7.5 | 2.5
- M4 | 0.7 | 16 | 8 | 9.5 | 3.5
- M5 | 0.8 | 20 | 10 | 11.5 | 4
- M6 | 1 | 24 | 12 | 15 | 5
- M8 | 1.25 | 30 | 16 | 18 | 6
- M10 | 1.5 | 36 | 20 | 23 | 8
Worked example: M5 tall thumb nut
An M5 DIN 466 nut is 20 mm across the knurl and 11.5 mm tall, more than twice the 5 mm of DIN 467. Leave at least 12 mm of stud above the part.
Common problems
- Bottoms out: the stud is too short for h.
- Slips in the fingers: the knurl is worn.
- Loosens: add a spring washer.
FAQ
What is DIN 466?
The tall knurled thumb nut. It has a knurled head on a long collar and gives more thread engagement than DIN 467.
What is the difference from DIN 467?
The knurl dk, collar ds and knurl height k are the same. Only the overall height h is greater.
Why is M12 not charted?
Only Ganter lists M12 (40/22/25/10), and that size is outside the DIN.
Why not M1 to M1.6?
Only one table lists those sizes.
Tolerances?
The min values come from one table only, so the chart shows nominal (max) values.
Related guides and calculators
- Knurled thumb nuts, thin (DIN 467)
- Wing nuts (DIN 315)
- Slotted round nuts (DIN 546)
- Hex nuts (ISO 4032)
- All free machinist calculators
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General shop information only — follow your drawing, tool maker's data and your quality system.