Hinge body: Types ST, STS and STL--Steel, plain finish
Type STL--Brass, turned, plain finish
Hinge pin: Steel
DIN 71412-D lubricating nipple: Steel, zinc-plated
Both dimensions, inch and metric, are interchangeable
GN 128 hinges are produced from drawn weldable profiled
Types ST, STS and MS feature a hinge pin fixed in the lower half of hinge. Type STL with loose steel pin allows easy installation when attaching several hinges in parallel, or if the door is very heavy.
The upper half of Type STS hinge has an additional DIN 71412-D lubricating nipple, which allows the hinges to be lubricated without dismantling them.