tender for 3/4 inch (19. 1 mm) dia. zinc plated/galvanized lock bolts with collar with grip range 31-38mm.drawing no. : wd-11036-s-01, alt.1 & wd-11036-s-02, alt. nil. material and specification : rdsosspecification no. wd-02-boxnhl-2011. remarks : one set consisting of 1 no. of lock & 1 no. of collar. pin-medium carbon steel, collar-low carbon steel.
