These side clamps utilize a smaller clamping space and allow clamping of larger work pieces. Tightening the ball screw forces the clamp forward and downward against the work piece supports and stops. The hex socket set screw works to prevent the clamp from sliding back when clamping. Two flat washers are included. The body is made from SAE-1045 alloy steel. The arm is made from SAE-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.