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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. Ty
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.

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