Latch achieves ultimate tensile strength of 7,500 kgf.

Press Release Summary:

Available with catchplate (Part No: 04-9000 MSZN), Big Bertha 490-9000 MSZN provides up to 30 mm of grip range adjustment. Zinc plated, mild steel latch assembly measures 392 x 85 x 40 mm, including catchplate at max capacity. Suitable for heavy duty applications found in earthmoving, mining equipment, aggregate conveyors, agricultural plant, freight, and off-highway vehicles.

Original Press Release:

Protex Introduces Its Highest Strength over Centre Latch to Date

Big Bertha' Provides Three Times the Grip of Previous Strongest Product

24th June 2009: Redditch-based Protex Fasteners Ltd, manufacturer of the world's largest stock range of over-centre catches, has introduced the 490-9000 MSZN, its highest performance latch to date.

Codenamed 'Big Bertha', the new fastener and dedicated catchplate (Part No: 04-9000 MSZN) have been developed to meet the types of super heavy duty application found in earthmoving, mining equipment, aggregate conveyors, agricultural plant, freight and off-highway vehicles.

The zinc plated, mild steel latch assembly achieves an Ultimate Tensile Strength (UTS) of 7500 kgf and provides up to 30 mm grip range adjustment. At maximum capacity, it measures 85 mm wide, 40 mm high and 392 mm long, including catchplate. A sealing facility is also incorporated in the catchplate as standard, to provide additional security.

According to Protex's systems and development manager, Adrian Symons: "Big Bertha has been developed to meet customer requirements for reliable fastening under the most demanding operating conditions, including extremely high dynamic and vibrational loads. It perfectly complements our existing fasteners for light, medium and heavy duty applications. But with around three times the ultimate tensile strength of our largest 40, 41 43, and 44 series catches, the new 490-9000 MSZN extends our products' capabilities into a completely new area of high strength fastening requirements."

About Protex Fasteners Ltd

Based in Redditch, Worcestershire, Protex Fasteners Ltd designs and manufactures the world's largest stock range of over-centre type fasteners.

More than 550 quick-action variants are produced in both stainless and mild steel, for applications in sectors as diverse as: civil engineering, aerospace, defence, agricultural equipment, process industries, enclosures, lifeboat and safety equipment, marine products and motor sports.

For further information please call Protex Fasteners Ltd on: +44 (0) 1527 63231.
or see the Protex Website:

More from Electrical Equipment & Systems

All Topics