Four Prong Knob, Screw Length (In.) 0.50 In., Thread Size (In.) 3/8-16, Dia. (In.) 2 In., Base Dia. (In.) 7/8, Knob Type Clamp Knob, Style Four Arm, Material HR Phenolic, Finish High Gloss, Standards Steel, Zinc Plated, Height (In.) 1.0, Length (In.) 1.50 In., Overall Height 1.0, Overall Length 1.50 In., Thread Type Course, Width -30 to 400 F
- Black polypropylene knobs are heat resistant to 225 F Phenolic knobs are heat resistant to 450 F Impact and scratch resistant
- 4-Prong and 4-Lobe
- For high torque or heavy-duty clamping applications. Soft touch 4-lobe knobs have over-molded rubber layer for comfortable, nonslip grip.