CAD (0) ▾
  • Cart is empty
  1. Request CAD files
Request Information Add to CAD Cart

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

 N/A M3 x 0.5

Thread Code

 N/A M3

Shank Code

 N/A 0

A (Shank) Max.

 N/A 0.77 mm Self-Clinching-Nuts---Types-S--SS--CLS--CLSS--SP-2.png

Plug Material

 N/A Black Silicone Rubber

High Temperature Resistant

 N/A 482 ºF250 ºC

Plug Hardness

 N/A Shore a 70
Rec. Min. Sheet Thickness1 N/A 0.8 mm

Hole Size in Sheet + .003 - .000

 N/A 4.22 mm

C Max.

 N/A 4.2 mm

E ± .010

 N/A 6.35 mm

T ± .010

 N/A 1.5 mm

PD

 N/A 2.7178 mm

PL

 N/A 1.58572 mm
Min. Dist. Hole C/L to Edge2 N/A 4.8 mm
For Use in Sheet Hardness3 N/A HRB 90 / HB 185 or Less

Thread Specification

 N/A Internal, ASME B1.13M, 6H

Fastener Material

 N/A Age Hardened A286 Stainless Steel

Standard Finish

 N/A Passivated and/or tested per ASTM A380

CAD Supplier

 N/A 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.