Anelok: case design (1/3): screws

Werner Almesberger werner at
Fri Jul 10 22:43:40 UTC 2015

Ron K. Jeffries wrote:
> What does "T5" refer to?

Torx drive, size 5, with an inner diameter of 1.42 mm:

You'll see the T5 marking when shopping for screwdrivers.

The actual size of the screw's head is a function of the drive size
and the head's geometry. E.g., if we look at page 14 of the EJOT
DELTA PT catalog [1], we get head diameters for T5 from 3.0 (WN 5452)
to 3.6 (WN 5451).

Note that this page contains one table, not multiple individual
tables: the dark-grey table on top shows the thread size that goes
with the respective drive in the head-specific sections below.

E.g., T5 corresponds to M1.6 [2] in this case.


- Werner

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