These side clamps utilize a smaller clamping space and allow clamping of larger workpieces. Tightening the ball screw forces the clamp forward and downward against the workpiece supports and stops. The hex socket setscrew works to prevent the clamp from sliding back when clamping. Two flat washers are included. The body is made from 1045 alloy steel. The arm is made from 1045 alloy steel and heat treated. The replaceable serrated jaw provides positive holding and is made from M-2 high speed steel, hardened to Rc 60/62. Parts have a black oxide finish.