Thread: 1" coarse. Weight Jack Bolt. Bryke Racing Part# 320-325.
ARC 20194 Coarse Thread Weight Jack Bolt 8" Long x 1" Race Car Weight Jack Bolt
Steel Weight Jack Bolt Detent System Light Weight 1" dia & 8" long
Weight Jack Bolt 4" inch Swivel Racing Assembly 1-1/8 Fine Thread
Weight Jack Bolt 6" inch Swivel Racing Assembly 1-1/8 Fine Thread
Weight Jack Bolt 4" inch Swivel Racing 1-1/8 Fine Thread
Steel Weight Jack Bolt Detent System 1" Diameter & 8" Long Gold Zinc Plated