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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.
Unit of Measure

Thread Size

.138-32 (#6-32)

Thread Code

632
Shank Code1 1

A (Shank) Max.

0.038 in CLA-Dwg.jpg
Min. Sheet Thickness2 .040 in

Hole Size in Sheet + .003 - .000

.213 in

C Max.

.212 in

E ± .010

.280 in

T ± .010

.090 in
Min. Dist. Hole C/L to Edge3 .27 in
For Use in Sheet Hardness4 HRB 50 / HB 82 or Less

Thread Specification

Internal, ASME B1.1, 2B

Fastener Material

Aluminum

Standard Finish

None

CAD Supplier

PennEngineering® (PEM®)
  • 1 Other shank and screw lengths available.
  • 2 For maximum performance, we recommend that you use the maximum shank length for your sheet thickness.
  • 3 To minimize sheet distortion and maximize product performance, use a centerline-to-edge value greater or equal to the value specified.
  • 4 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.