Super Heavy Duty Toggle Latch Introduced Into Protex's Range

Redditch-based Protex Fasteners has introduced the 490-9000 range, its highest performance over centre latch to date. Codenamed 'Big Bertha', the new heavy duty toggle latch and dedicated catchplate 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 over centre latch assembly achieves an ultimate tensile strength (UTS) of 7000kgf and provides up to 14mm grip range adjustment. At maximum capacity, this heavy duty latch measures 85mm wide, 40mm high and 392mm long, including catchplate or keeper plate. 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 toggle fasteners for light, medium and heavy duty applications. But with around three times the ultimate tensile strength of our largest 43, and 44 series catches, the new 490-9000 range extends our products' capabilities into a completely new area of high strength fastening requirements.”

Buy Heavy Duty Latches Online

Big Bertha joins Protex's extensive range of over-centre type fasteners, which includes more than 550 quick action toggle clips, produced in both stainless and mild steel. If you’re looking for further information on the Protex toggle fasteners, discover our full range online. Alternatively, if you need assistance searching for the most suitable latch or fastener, contact one of our experts by calling +44(0)1527 63231 or emailing