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. Ty
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Unit of Measure

Thread Size

 N/A .073-64 (#1-64)

Thread Type

 N/A Self-Locking

Thread Code

 N/A 164
Shank Code1 N/A 0

A (Shank) Max.

 N/A .020 in a1387.jpg
Sheet Thickness2 N/A .019 to .022 in

Hole Size in Sheet + .003 - .000

 N/A .110 in

C + .000 - .005

 N/A .110 in

D Max.

 N/A .090 in

E ± .005

 N/A .125 in

T + .015 -.000

 N/A .050 in

Min. Dist. Hole C/L to Edge

 N/A .090 in

Max. Hole in Attached Parts

 N/A .093 in
For Use in Sheet Hardness3 N/A HRB 70 / HB 125 or Less

Thread Specification

 N/A Internal, MIL-S-8879, UNJ-3B

Fastener Material

 N/A 300 Series Stainless Steel

Standard Finish

 N/A Passivated Plus Clear Dry-film Lubricant

CAD Supplier

 N/A PennEngineering® (PEM®)
  • 1 Shank code applicable only to Types U and UL fasteners.
  • 2 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
  • 3 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.