Grade C UNC - Zinc/Wax

Grade C All Metal STOVER Lock Nut. UNC Coarse Thread. High Strength. Medium carbon heat treated steel. One piece construction. Locks in any position for a strong, shock and vibration proof, uniform clamping force. Easily installed and reusable, STOVER nuts start freely then requires wrenching as the out-of-round top threads grip the bolt. Slightly conical shape. Cadmium or Yellow Zinc Dichromate Plated & Wax Finish. GRADE C for critical applications. 150,000 psi Proof Stress. Identified by 8 raised dots.