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DIN 653 M3 knurled thumb screw envelope

DIN 653 M3 knurled thumb screw envelope: plain head cylinder Ø12 × 2.5 mm (dk nominal, k nominal = max) on a plain Ø3 shank 6 mm under the head; the 6 mm length is the shortest in fasten.it's list for this size, an example; no knurl, slot, chamfer or edge radius, thread drawn plain

Exact dimensions. True size, no tolerance added. Threads are plain cylinders at the major diameter.

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Dimensions

sizeM3
pitch P (mm)0.5
a1 max (mm)1.5
head dk nominal (max / min) (mm)12 (12.35 / 11.65)
shank d max / min (mm, Westfield)3.00 / 2.86
head height k nominal = max / min (mm)2.5 / 2.25
r max (mm)0.5
knurl pitch min (mm)0.6
nominal lengths (mm, fasten.it)6 – 20
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From the full sheet

Knurled thumb screws, low type (DIN 653), M1–M10: head diameter, head height, shank, nominal lengths + 6 models: every size, notes, mating features and sources. What are the dimensions of a DIN 653 low-profile knurled thumb screw (M3, M4, M5, M6, M8)?

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