Toggle clamp and safety hook latch: Case-hardened sheet metal
zinc plated, blue passivated finish
Bearing pins tempered
Bearing rivets (for sizes 355 and 455) case-hardened
All moving parts lubricated with special grease
Hand grip: High quality, oil resistant
Neoprene spindle assembly (Type NLC):
Steel, zinc plated, blue passivated finish
Spindle tip: Black neoprene rubber (CR), 85° shore A, vulcanized
Type NL: U-bar version with two flanged
Type NLC: U-bar version with two flanged
washers and GN 708.1 Type A spindle
Type PL: Solid bar version with clasp
GN 820.4 horizontal acting toggle clamps have a safety function whereby, during closing, a spring loaded safety hook latch ensures a secure locking connection. It prevents the inadvertent unlocking of the clamp due to vibrations or an accidental attempt of loosening / opening of the clamp. To open and release the clamp, pull up on the finger grip to disengage the safety hook latch mechanism (one hand operation).
They work according to the toggle principle: lever and clamping bar move in the opposite direction. They require less space for the clamping action.
Horizontal acting toggle clamps in the U-bar version with two flanged washers (Type NL) can accom-modate an application specific clamping screw. A spindle assembly with neoprene rubber tip is also included for Type NLC.
Type PL version can be utilized by welding the clasp, which can then accommodate an application specific hold-down fastener component, or by utilizing the bar in conjunction with GN 809 Clamp Mounts to hold the work piece in place.
For stainless steel version see GN 820.4I.
See also General Information on Toggle Clamps.