Self-locking nuts suit thinner sheets
A
Penn Engineering product story
Edited by the Engineeringtalk editorial team
Jul 8, 2005
New PEM self-locking nuts offer advantages by enabling permanent installation in even thinner metal sheets and closer to edges.
New PEM self-locking nuts offer advantages by enabling permanent installation in even thinner metal sheets and closer to edges.
These steel fasteners provide strong, reliable, and reusable locking threads and can serve ideally in thin-metal assemblies where space for hardware may be limited.
Only mating hardware is required to complete final component attachment.
Their unique design features include an integrated nylon (nonmetallic) locking element to prevent loosening of mating threaded hardware; a broaching knurl to create a firm, interference-type fit resistant to rotation; and a shoulder to act as a positive stop during the installation process.
PEM (Type CFN) locknuts install in sheets as thin as 0.91mm and are available in thread sizes 4-40 and M3.
They install easily by inserting the fastener into mounting anvil hole, placing the mounting hole over the shank of the fastener, and (with punch and anvil surfaces parallel) applying enough squeezing force until the shoulder of the fastener contacts the sheet.
CAD drawings (in most formats) for these fasteners are available free of charge from the company's website.
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