Self-clinching nuts provide load-bearing threads
A
Penn Engineering product story
Edited by the Engineeringtalk editorial team
Nov 26, 2002
PEM self-clinching nuts provide permanent load-bearing threads in metal sheets too thin to be tapped and offer a practical alternative to extruded/tapped or stamped threads.
PEM self-clinching nuts provide permanent load-bearing threads in metal sheets too thin to be tapped and offer a practical alternative to extruded/tapped or stamped threads.
All-metal PEM nuts install quickly in sheets as thin as 0.8mm, where they then become a permanent and integral part of an assembly.
Their use minimises the amount of required fastening hardware in an assembly, since only a mating screw is needed to complete final attachment of components.
PEM self-clinching nuts are installed by inserting the fastener in a punched or drilled hole, then applying a squeezing force utilising a Pemserter or other standard press to embed the nut's clinching ring completely in the sheet metal.
The clinching ring locks the displaced metal behind the tapered shank to promote high pushout resistance.
High torque-out resistance is achieved during installation when the nut's knurled platform is embedded in the sheet metal.
Proper installation forces will not distort or damage a PEM nut's threads.
All clinching occurs on the fastener side of the sheet, which allows the reverse side to remain flush and smooth.
PEM self-clinching nuts in steel, stainless steel, or aluminium are available in thread sizes #2-56 through 1/2-20 and M2 through M10, depending on type.
A special family of PEM nuts has been designed for use in thin stainless sheets.
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