Xem Studiomeasured geometry

Library › Cameras & lenses › Lens filter threads: M40.5 × 0.5 to M112, pitch table and thread rings

M49 × 0.75 filter internal thread ring section

M49 × 0.75 filter internal thread ring section: ISO 68-1 basic profile, minor Ø48.188, pitch Ø48.513, major Ø49, pitch 0.75; 6 long (8 turns), outside Ø53 (design choice); exact nominal, no tolerance

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

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

threadM49 × 0.75
major Ø D (mm)49
pitch P (mm)0.75
pitch Ø D2 (mm)48.513
minor Ø D1 (mm)48.188
thread depth 5H/8 (mm)0.406
pitch fromMarumi
filesmale + female rings
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From the full sheet

Lens filter threads: M40.5 × 0.5 to M112, pitch table and thread rings: every size, notes, mating features and sources. What thread pitch is a 67 mm (or 52, 77, 82 mm) lens filter?

Other sizes