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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 > PEM® PreTect™ Thread Masking Plugs > Part # S-0420-2ZI-TP  

Part # S-0420-2ZI-TP, PEM® PreTect™ Thread Masking Plugs

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PEM® PreTect™ Thread Masking Plugs reduce labor and protect threads from paint and powder coating processes. PreTect™ Thread Masking Plugs are available for standard type self-clinching nuts in variety of thread sizes and materials.

Features include:

  • Fasteners are shipped with plugs already in place.
  • Plugs easily removed by end user with fine tip tool.
  • Plugs can withstand 482°F/250°C temperatures




 Specifications   

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

Thread Code
0420

Shank Code
2

A (Shank) Max.

 View
.087 in

Plug Material
Black Silicone Rubber

High Temperature Resistant
482 ºF
250 ºC

Plug Hardness
Shore a 70

Rec. Min. Sheet Thickness1
.090 in

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

C Max.
.343 in

E ± .010
.440 in

T ± .010
.170 in

PD
0.216 in

PL
0.0344 in

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

For Use in Sheet Hardness3
HRB 80 / HB 150 or less

Thread Specification
Internal, ASME B1.1, 2B

Fastener Material
Heat-Treated Carbon Steel

Standard Finish
Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless

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.


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·  Self-Clinching Nuts - Types S, SS, CLS, CLSS, SP 2



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