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PEM® PEMFLEX® self-locking, self-clinching fasteners retain their repeated use and effective prevailing locking torque.
  • Shoulder provides increased performance.
  • Flexing action permits repeated use and effective locking torque.
  • Flange provides positive stop during installation.
The thread locking performance of Types LK, LKA, and LKS PEMHEX self-clinching fasteners (with MD finish) is equivalent to applicable NASM25027 specifications. The self-clinching feature is the same tried and proven designmore
Unit of Measure

Specifications

Thread Size x Pitch

M4 x 0.7

A (Shank) Max.

1.38 mm a1093.jpg

Min. Sheet Thickness

1.4 mm

Hole Size in Sheet + 0.08

6.76 mm

C Max.

6.73 mm

D Max.

6.2 mm

E Nom.

8.73 mm

T ± 0.25

4.45 mm

Min. Dist. Hole C/L to Edge

5.20 mm
For Use in Sheet Hardness1 HRB 70 / HB 125 or Less

Thread Specification

Internal, ANSI/ASME B1.13M, 6H

Fastener Material

Carbon Steel

Standard Finish

Black, Dry-film Lubricant over Zinc Phosphate

Anvil Dia.

13.00 mm

Anvil Depth

5.50 mm

Breaker Corner

0.13 mm

Punch Dia.

13.00 mm

CAD Supplier

PennEngineering® (PEM®)
  • 1 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.