Type CLA aluminum nuts are recommended for use in aluminum sheet with a hardness of HRB 50 or less on the Rockwell “B” scale.

Unplated threads are sized to accept a basic go gauge after .00025” plating.
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Unit of Measure

Thread Size x Pitch

 M4 x 0.7

Thread Code

 M4

Shank Code

 2

A (Shank) Max.

 1.38 mm
CLA-Dwg.jpg
Min. Sheet Thickness1 1.4 mm

Hole Size in Sheet + 0.08

 5.94 mm

C Max.

 5.92 mm

E ± 0.25

 7.8 mm

T ± 0.25

 3.00 mm
Min. Dist. Hole C/L to Edge2 7.1 mm
For Use in Sheet Hardness3 HRB 50 / HB 82 or less

Thread Specification

 Internal, ASME B1.13M, 6H

Fastener Material

 Aluminum

Standard Finish

 None
  • 1 For maximum performance, we recommend that you use the maximum shank length for your sheet thickness.
  • 2 To minimize sheet distortion and maximize product performance, use a centerline-to-edge value greater or equal to the value specified.
  • 3 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.