5/8"-11 x 1-1/4" UNC Low Head Socket Head Cap Screw Bare Rc Hardness - 37-45 SHCS C/S Capscrew - R. E. Glover Ltd.
5/8"-11 x 1-1/4" UNC LOW HD SHCS Rc Hardness - 37-45
5/8"-11 x 1-1/4" UNC Low Head Socket Head Cap Screw Bare Rc Hardness - 37-45 SHCS C/S Capscrew