Materials & Finish
External components:
HINGE LEAVES, RETAINING TAB, END PLUGS, and COVERS:
Acetal, black.
Internal
components:
SPRINGS: 302 Stainless steel, natural.
DETENT BALLS: Chrome steel, natural, or for assemblies
with stainless steel tubes, zinc plate, chromate plus sealer.
DETENT TUBE: 1065 Steel hardened, zinc plate, chromate
plus sealer, or 304 stainless steel passivated.