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All Categories > PEM® Brand Fasteners for Metal Sheets and Panels > Nuts for Sheet Metal > Nuts – Types CLA, CLS, CLSS, H, HNL, S, SS, SMPS, SP, SMPP > Nuts – Types S, SS, CLS, CLSS, CLA, SP > Self-Clinching Nuts - Type CLA - Unified > Part # CLA-0420-2  

Part # CLA-0420-2, Self-Clinching Nuts - Type CLA - Unified

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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.




 Specifications   

Thread Size
.250-20 (1/4-20)

Thread Code
0420

Shank Code
2

A (Shank) Max.

 View
.087 in

Min. Sheet Thickness1
.091 in

Hole Size in Sheet + .003 - .000
.344 in

C Max.
.343 in

E ± .010
.440 in

T ± .010
.170 in

Min. Dist. Hole C/L to Edge2
.34 in

For Use in Sheet Hardness3
HRB 50 / HB 82 or less

Thread Specification
Internal, ASME B1.1, 2B

Fastener Material
Aluminum

Standard Finish
None

CAD Supplier
PennEngineering® (PEM®)
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.


 MORE IMAGES 

·  CL Installation 800x600



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