Engine Jackshaft Sprockets, B Type, Steel, #40/41 Chain, 5/8 In. Bore, 3/16 In. Integral Key, 5/16-18 Set Screw, COMPLETE SELECTION
Made of case-hardened steel and hobbed teeth, B Type Sprockets have a hub on one side only. Unless otherwise noted, B type sprockets have two 5/16-18 set screws. All sprockets on this page with a “K” in their part number have a key broached into the hub rather than a keyway. No key is needed.