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Knurled Thumb Screw Dimensions, High Type (DIN 464, M2 to M10)
Guide · Updated October 28, 2026
DIN 464 covers high type knurled thumb screws with a collar, M2 to M10. M3 to M10 values agree across the Elesa+Ganter (TME) sheet, DigiPich, nutbolt.org, Changla Exports and Lederer tables; M2 and M2.5 match Elesa+Ganter and DigiPich. Nominal sizes shown.
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Step by step
- Find the thread: Pick the row for your tapped hole, M2 to M10.
- Check the grip: dk is the knurl diameter, e.g. 24 mm for M6.
- Check the head height: h is the full head with collar, e.g. 15 mm for M6; k is the knurled band.
- Pick the length: Length l is measured under the collar; the thread usually runs up to the collar.
DIN 464 knurled thumb screw dimensions (mm)
Columns: thread d, pitch P, knurl diameter dk, collar diameter ds max, knurl height k max, total head height h.
- Size | P | dk | ds | k | h
- M2 | 0.4 | 9 | 4.5 | 2 | 5.3
- M2.5 | 0.45 | 11 | 5 | 2.5 | 6.5
- M3 | 0.5 | 12 | 6 | 2.5 | 7.5
- M4 | 0.7 | 16 | 8 | 3.5 | 9.5
- M5 | 0.8 | 20 | 10 | 4 | 11.5
- M6 | 1 | 24 | 12 | 5 | 15
- M8 | 1.25 | 30 | 16 | 6 | 18
- M10 | 1.5 | 36 | 20 | 8 | 23
Worked example: M6 screw
An M6 DIN 464 screw has a 24 mm knurled head 5 mm thick on a 12 mm collar, 15 mm overall head height. Allow that clearance above the part.
Common problems
- Over-tightening with pliers: these are for hand torque only.
- No room for fingers: check dk and h against nearby walls.
- Screw vibrates loose: add a spring washer or thread locker.
FAQ
What is DIN 464 used for?
Hand-tightened screws on covers, guards, fixtures and instruments that are opened often.
DIN 464 vs DIN 653?
DIN 464 is the high type with a collar (ds) under the knurl; DIN 653 is the low type without a tall collar.
Is there a slot in the head?
DIN 464 heads are plain knurled; some suppliers sell a slotted variant, so check the listing.
Why are thread length and sizes below M2 left out?
Only one free source lists them, so they are not shown here; check your supplier.
Related guides and calculators
- Wing screws (DIN 316)
- Low knurled thumb screws (DIN 653)
- Tall knurled thumb nuts (DIN 466)
- Thin knurled thumb nuts (DIN 467)
- Knurled nuts (DIN 6303)
- Wing nuts (DIN 315)
- How to knurl on a lathe
- All free machinist calculators
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