Flat-Cushion SpindlesThis is the standard spindle supplied with most clamps. Molded neoprene tip provides medium clamping force with some compensation for part-size variation. Also provides scratch-free clamping. Fully threaded for maximum adjustment range. Assembly includes two jam nuts.MaterialMaterialHeat TreatFinishDFARSRoHSMild Steel-Zinc plated clear chromate, with molded-on neoprene cushion, durometer hardness 70 shore A, operating temperature range -40°F to 220°F✔✔Parts SpecificationA ThreadB (Inch)C Diameter (Inch)D Diameter (Inch)E (Inch)3/8-163-9/167/80.560.84