Catalog

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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
Unit of Measure

Thread Size

 M8 x 1.25

Thread Code

 M8

Shank Code

 2

A (Shank) Max.

 2.21 mm
Self-Clinching-Nuts---Types-S--SS--CLS--CLSS--SP-2.png

Plug Material

 Black Silicone Rubber

High Temperature Resistant

 482 ºF250 ºC

Plug Hardness

 Shore a 70
Rec. Min. Sheet Thickness1 2.29 mm

Hole Size in Sheet + .003 - .000

 10.5 mm

C Max.

 10.47 mm

E ± .010

 12.7 mm

T ± .010

 5.47 mm

PD

 7.1628 mm

PL

 0.829 mm
Min. Dist. Hole C/L to Edge2 9.7 mm
For Use in Sheet Hardness3 HRB 90 / HB 185 or Less

Thread Specification

 Internal, ASME B1.13M, 6H

Fastener Material

 Age Hardened A286 Stainless Steel

Standard Finish

 Passivated and/or tested per ASTM A380

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.