Product category:
Mechanical fasteners, fixing and joining, and equipment
News Release from: Profil UK | Subject: RND corrosion resistant nuts
Edited by the Manufacturingtalk Editorial
Team on 05 October 2006
Steel nuts withstand over 1000h salt
spray test
A finishing process applied to a standard range of steel nuts, has resulted in the fasteners being able to withstand more than 1000h salt spray automotive testing without red rust appearing.
A groundbreaking finishing process developed by Profil UK and applied to its standard range of steel nuts, has resulted in the fasteners being able to withstand more than 1000h automotive testing without red rust (RR) appearing This represents a significant move forward for the automotive industry as a typical zinc electroplated zinc and yellow passivation steel surface withstands salt spray for just 96h without RR
This article was originally published on Manufacturingtalk on 18 Sep 2008 at 8.00am (UK)
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Profil to showcase pierce fastening technology
Profil will showcase its latest pierce fastening technology at the Northern Manufacturing Show, Hallam FM Arena, Sheffield, 1-2 October.
Audi to use high strength rivet nuts in vehicles
Profil RSN and RND high strength rivet nuts will be used by Audi in a safety-critical bonnet latch mounting application on its latest generation A4 and A5 vehicles.
A major supplier of pierce fastening technology to the automotive industry, this is the first time Profil has used the Magni finish, which has been developed in conjunction with the US motor industry and is available under Licence in Europe and the UK.
Because fasteners are used on all parts of vehicles, different coatings are required to protect against corrosion and control the amount of torque needed to tighten them.
Profil worked with a Magni supplier in Germany to develop the finish which prevents bi-metallic corrosion between nut and panel and consists of two layers: 565 an inorganic zinc-rich basecoat and a B18 organic pigmented topcoat.
Further reading
Pierce fastening beats riveting and welding
Pierce fastening technology is being used to install four studs in both the left and right hand rear light bowls of the BMW Mini car at a faster rate than possible with riveting or welded fasteners.
High strength threads installed in sheet metal
A UK exhibition demonstration of advanced mechanical fastening systems for sheet metal applications will show the installation of high strength male or female threads in components up to 4.0mm thick.
The function of the nuts and pre-piercing the holes in the panels ensures the plating is not damaged or altered while the nuts are inserted.
Exceptionally high torque and pull-through loads have also been achieved when Profil's Magni-plated standard steel nuts inserted into aluminium panels have been subjected to the 1000h salt spray test.
For example, a RND 8 nut in 3.00mm thick material achieved a maximum torque to failure of 87.1Nm and a nut pull-through load of 29 tonnes.
A clear demonstration of Profil's commitment to providing customers with superior quality technology-based solutions, Magni-plated fasteners have already been specified for a project for Lotus involving an all-aluminium car due to go in production in 2007.
The finish will be offered as an optional extra on standard steel nuts; the combination of high strength and corrosion resistance means they are likely to be specified for critical areas such as suspension and engine mounts, seat fixings, etc Able to accommodate panel thicknesses from 0.6 to 4.0mm thick, Profil fasteners are equally suitable for use with coated or uncoated materials, high tensile, stainless and sandwich steels, and can even be installed in aluminium and magnesium castings further reducing inventory and production costs.
They can also be installed during the multi-stage forming process of pressed components at more than 100 fasteners/min.
* About Profil UK - based in Coalville, Leicestershire, Profil UK draws on more than 30 years experience in the development and application of pierce fastening technology.
The company offers a comprehensive range of fastener styles and installation equipment - all backed by ISO 9001 certification - and is a principal supplier to customers throughout the automotive, domestic appliance and sheet metal fabrication sectors. Request a free brochure from Profil UK ...
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