Zygology
Zygology Ltd
Unit 7, Thame 40 Jane Morbey Road
Thame Oxon OX9 3RR
Phone: 0808 123 1221
Fax: +44 1844 266021
Email: sales@zygology.com
Web Address: www.zygology.com
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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 visualmore
Miniature nuts – FE, FEO, FEOX, FEX, U, UL
Miniature Self-Clinching Fasteners - Types U, UL, FE, FEO, FEOX, FEX 2
Unit of Measure
Items Miniature nuts – FE, FEO, FEOX, FEX, U, UL
U-080-0
Miniature Self-Clinching Fasteners - Types U, UL, FE, FEO, FEOX, FEX - Unified 		Miniature nuts – FE, FEO, FEOX, FEX, U, UL
U-164-0
Miniature Self-Clinching Fasteners - Types U, UL, FE, FEO, FEOX, FEX - Unified 		Miniature nuts – FE, FEO, FEOX, FEX, U, UL
U-256-0
Miniature Self-Clinching Fasteners - Types U, UL, FE, FEO, FEOX, FEX - Unified 		Miniature nuts – FE, FEO, FEOX, FEX, U, UL
U-256-1
Miniature Self-Clinching Fasteners - Types U, UL, FE, FEO, FEOX, FEX - Unified 		Miniature nuts – FE, FEO, FEOX, FEX, U, UL
UL-080-0CW
Miniature Self-Clinching Fasteners - Types U, UL, FE, FEO, FEOX, FEX - Unified
Description N/A 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
Thread Size N/A .060-80 (#0-80) N/A .073-64 (#1-64) N/A .086-56 (#2-56) N/A .086-56 (#2-56) N/A .060-80 (#0-80)
Thread Type N/A Non-Locking N/A Non-Locking N/A Non-Locking N/A Non-Locking N/A Self-Locking
Thread Code N/A 080 N/A 164 N/A 256 N/A 256 N/A 080
Shank Code1 N/A 0 N/A 0 N/A 0 N/A 1 N/A 0
A (Shank) Max. N/A .020 in a1387.jpg N/A .020 in a1387.jpg N/A .020 in a1387.jpg N/A .031 in a1387.jpg N/A .020 in a1387.jpg
Sheet Thickness2 N/A .019 to .022 in N/A .019 to .022 in N/A .019 to .022 in N/A .030 to .036 in N/A .019 to .022 in
Hole Size in Sheet + .003 - .000 N/A .110 in N/A .110 in N/A .144 in N/A .144 in N/A .110 in
C + .000 - .005 N/A .110 in N/A .110 in N/A .144 in N/A .144 in N/A .110 in
D Max. N/A .076 in N/A .090 in N/A .106 in N/A .106 in N/A .076 in
E ± .005 N/A .125 in N/A .125 in N/A .160 in N/A .160 in N/A .125 in
T + .015 -.000 N/A .050 in N/A .050 in N/A .065 in N/A .065 in N/A .050 in
Min. Dist. Hole C/L to Edge N/A .090 in N/A .090 in N/A .110 in N/A .110 in N/A .090 in
Max. Hole in Attached Parts N/A .080 in N/A .093 in N/A .106 in N/A .106 in N/A .080 in
For Use in Sheet Hardness3 N/A HRB 70 / HB 125 or Less
Thread Specification N/A Internal, ANSI B1.1, 2B N/A Internal, ANSI B1.1, 2B N/A Internal, ANSI B1.1, 2B N/A Internal, ANSI B1.1, 2B N/A Internal, MIL-S-8879, UNJ-3B
Fastener Material N/A 300 Series Stainless Steel
Standard Finish N/A Passivated and/or tested per ASTM A380 N/A Passivated and/or tested per ASTM A380 N/A Passivated and/or tested per ASTM A380 N/A Passivated and/or tested per ASTM A380 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.