ROD-TYPE FASTENING MEMBER Russian patent published in 1999 - IPC

FIELD: fastening members of nail, wood screw, screw and rivet types. SUBSTANCE: fastening member is made of two metals which form internal and external layers. Internal layer is manufactured of steel, and external part, of corrosion-resistance material, for example, copper. Thickness of external copper layer is within range of 0.1-1.5 mm. It may be provided with screw knurling. Use of copper layer enhances fastening member serviceability in corrosive media and balances mechanical stresses. Fastening member has current conductor function. EFFECT: enhanced durability. 2 cl, 5 dwg