Style No. 820 "Jonrgensen"® Machinist' Clamps

Heavy, medium-duty design with pearlitic iron frames and large, 13/16" diameter screws for industrial service. Widely used by machinists and in heavy structural work and steel plate assembly. Unique rounded frame design allows clearance at top, back and botton of work being held. Extra-large anvils are machined flat to assure secure grip. Longer frame hubs and special, square-thread screws assure durability.

Style 820 is also availavle with shields over the screws which provide protection against weld spatter, accidental contact with welding device or hammer blows. Request individual stock numbers by adding -S. Note, opening capacities are a 1/4" less due to shields

Frame - deep throat, heat-treated, pearlitic and/or ductile iron to resist strain; black baked-enamel finish.
Anvil - machined-ground; extra wide.
Screw - 13/16" diameter, full length, cold-drawn steel with special, smoothly cut Acme threads; steel sliding-pin handle.
Swivel - 1-3/8" diameter (#1048); exclusive Jorgensen design with steel internal tooth washers for positive "stay-on" power.