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PEM® brand miniature fasteners fit into a minimal space and provide strong, reusable threads.

Types FE, FEO and UL are self-locking. Types FE and FEO thread locking torque performance is equivalent to applicable NASM25027 specifications. Type UL self-locking nuts meet locking torque requirements specified herein. Some sizes of FE, FEO, and UL can be ordered to NASM45938/7 specifications. Types FEX, FEOX and U have free-running class 2B/6H threads.

PEM miniature fasteners provide immediate visual
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Unit of Measure

Specifications

Thread Size x Pitch

M5 x 0.8

Thread Type

Self-Locking

Thread Code

M5

A (Shank) Max.

1.53 mm a1387.jpg
Sheet Thickness1 1.50 to 1.78 mm

Hole Size in Sheet + 0.08

7.39 mm

C - 0.13

7.37 mm

D Max.

6.48 mm

E ± 0.13

8.17 mm

T + 0.4

3.05 mm

Min. Dist. Hole C/L to Edge

5.20 mm

Max. Hole in Attached Parts

5.50 mm
For Use in Sheet Hardness2 HRB 70 / HB 125 or Less

Thread Specification

Internal, ANSI B1.21M, MJ 4H6H 4H5H (M6 thread)

Fastener Material

300 Series Stainless Steel

Standard Finish

Black, Dry-film Lubricant

CAD Supplier

PennEngineering® (PEM®)
  • 1 In applications between the sheet thicknesses for your thread size, see last paragraph of installation data on page FE-6. Knurled collar may fracture if fastener is used in sheets thicker than the specified range and the screw is tightened beyond maximum tightening torque.
  • 2 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.