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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
1 

Part #

Thread Size x Pitch

Thread Type

Sheet Thickness

Hole Size in Sheet + 0.08

Standard Finish

CAD

U-M2-1 N/A M2 x 0.4 N/A Non-Locking N/A 0.76 to 0.91 mm N/A 3.61 mm N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
UL-M2-1CW N/A M2 x 0.4 N/A Self-Locking N/A 0.76 to 0.91 mm N/A 3.61 mm N/A Passivated Plus Clear Dry-film Lubricant N/A CAD Icon (for items table)
FE-M3MD N/A M3 x 0.5 N/A Self-Locking N/A 1.50 to 1.78 mm N/A 4.39 mm N/A Black, Dry-film Lubricant N/A CAD Icon (for items table)
FE-M4MD N/A M4 x 0.7 N/A Self-Locking N/A 1.50 to 1.78 mm N/A 7.39 mm N/A Black, Dry-film Lubricant N/A CAD Icon (for items table)
FE-M5MD N/A M5 x 0.8 N/A Self-Locking N/A 1.50 to 1.78 mm N/A 7.39 mm N/A Black, Dry-film Lubricant N/A CAD Icon (for items table)
FE-M6MD N/A M6 x 1 N/A Self-Locking N/A 1.50 to 1.78 mm N/A 8.74 mm N/A Black, Dry-film Lubricant N/A CAD Icon (for items table)
FEX-M3 N/A M3 x 0.5 N/A Non-Locking N/A 1.50 to 1.78 mm N/A 4.39 mm N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
FEX-M4 N/A M4 x 0.7 N/A Non-Locking N/A 1.50 to 1.78 mm N/A 7.39 mm N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
FEX-M5 N/A M5 x 0.8 N/A Non-Locking N/A 1.50 to 1.78 mm N/A 7.39 mm N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
FEX-M6 N/A M6 x 1 N/A Non-Locking N/A 1.50 to 1.78 mm N/A 8.74 mm N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
FEO-M3-MD N/A M3 x 0.5 N/A Self-Locking N/A 0.99 to 1.14 mm N/A 4.39 mm N/A Black, Dry-film Lubricant N/A CAD Icon (for items table)
FEO-M4-MD N/A M4 x 0.7 N/A Self-Locking N/A 0.99 to 1.14 mm N/A 7.39 mm N/A Black, Dry-film Lubricant N/A CAD Icon (for items table)
FEO-M5-MD N/A M5 x 0.8 N/A Self-Locking N/A 0.99 to 1.14 mm N/A 7.39 mm N/A Black, Dry-film Lubricant N/A CAD Icon (for items table)
FEOX-M3 N/A M3 x 0.5 N/A Non-Locking N/A 0.99 to 1.14 mm N/A 4.39 mm N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
FEOX-M4 N/A M4 x 0.7 N/A Non-Locking N/A 0.99 to 1.14 mm N/A 7.39 mm N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
FEOX-M5 N/A M5 x 0.8 N/A Non-Locking N/A 0.99 to 1.14 mm N/A 7.39 mm N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
Unit of Measure
1