EFC International
EFC International
1940 Craigshire St. Louis,
MO 63146-4008
Phone: 1 314.434.28881
Contact: www.efc-intl.com/contact
Website: www.efc-intl.com
Print Back
These Steel and Stainless Steel Self-Clinching Nuts provide strong load-bearing threads in sheet metal and other thin section assemblies. These nuts meet specification features of MIL-N-45938/1. All self-clinching fasteners install into a round hole, which may be punched or drilled in ductile materials. They provide a permanently attached fastener, which becomes an integral part of the panel or frame and eliminates the problems associated with loose hardware. Self-Clinching fasteners provide added value by speeding initial assembly as well as servicing in the field, keeping costs to a minimum.
Unit of Measure

Specifications

Material

 N/A Carbon Steel

Thread Size

 N/A 1/4-28

Minimum Panel Size

 N/A 0.091 in

Dimension B

 N/A 0.437 in

Dimension C

 N/A 0.170 in

Minimum Hole Center to Panel Edge

 N/A 0.340 in

Hole Inside Diameter

 N/A 0.344 in

Maximum Dimension A

 N/A 0.343 in

Maximum Dimension D

 N/A 0.087 in

Fastener Features

 N/A Self-Clinching

Features and Benefits

Features and Benefits

 N/A Self-clinching fasteners are pressed into holes in sheet metal by applying a steady squeezing force. This results in the cold-flow of sheet material, which is displaced by the knurl, into the undercut area on the shank of the fastener. Once fully embedded, the knurled area prevents torque-out during tightening of mating part.

Thread: Class 2B, MIL - S - 7742; (6H ISO metric)
Use In: C - Materials with HRB-80 or less
CS - Materials with HRB-70 or less