15 January 2015
Sign up to our newsletterWant more news like this? Sign up to our newsletter.


Floating self-clinching nuts from PEM have been designed for stainless steel assemblies and enable easier mating-hole alignment to promote design flexibility in relaxed tolerance applications.

These PennEngineering fasteners can be specified either with non-locking or self-locking threads and will permit up to 0.38mm minimum float in all directions from centre. Their design further imparts added strength and support in an assembly by permitting fastener threads to extend fully into their retainer shank, the company claims.

The family of fasteners includes non-locking Type A4 nuts with free running load-bearing threads and self-locking Type LA4 nuts, which feature prevailing torque locking threads. They will install and perform reliably in stainless sheets as thin as 0.97mm and greater with hardness of HRB 88 or less on the Rockwell B scale. Available thread sizes for both types range from M3 to M5 with Imperial equivalents.

The nuts install easily and quickly by squeezing them into properly sized holes using a press or other standard equipment to develop sufficient force. The fasteners then clinch permanently into place with the side opposite the fastener remaining flush. Ultimately, they become an integral part of a stainless assembly, provide re-usable load-bearing threads to accept mating hardware, and exhibit high torque-out and push-out resistances in service.

Paul Gay

Related Websites


Similar Articles

Seal ring for blind rivet nuts

Bollhoff says that its new range of tight Rivkle seal ring nuts and studs protects assemblies from external forces and ensures leak-tightness.

Quick Connectors for fluids

Justin Lawrence, applications engineer at fastening and supply chain expert TFC, explains how to reliably speed up fluid transfer, a common assembly process in UK manufacturing.


The two flat roofs on either side of the central clock tower of the Southern Colonnade entrance at King’s Cross Station in London have been refurbished due to extensive sagging ...

Compact and Powerful

Round wire wave springs offer increased and more accurate loading compared to alternative spring options like disc springs or Belleville washers. Additionally they require less ...

New ranges of stainless

SD Products Ltd is a third generation family owned business with over 40 years of experience as a stockist distributor of specialist fasteners, we supply product across all ...

Avseal II sealing plug

At Zygology we always like introducing innovative products which solve customer problems, improve quality and drive down assembly costs. A great example of this is the Avseal II ...