Hex Lock Nut - 1/2-13 - Med. Carbon Steel - Zinc & Wax CR+3 - Grade C - 100 Pk - BBI 825190

LOCK NUTS REMAIN STIFF WHEN PLACED ON BOLTS. THEY ARE USEFUL IN APPLICATIONS WHERE VIBRATION MAY CAUSE A FASTENER TO COME LOOSE. LOCK NUTS ARE ALSO ABLE TO BE USED TO KEEP OTHER NUTS IN PLACE BY THREADING OVER THEM.