SAE approved alloy coil spring steel. Greater resistance to high temperature. Zinc; yellow plating for corrosion resistance. Not brittle at low temperature. Per package of 100. SKU: 42612780 MFG: 76174 Shop more products by Imperial. We offer wide selection of Nuts, Bolts, Screws & Fasteners, with Life and Home you always get the best deals SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Shipping not available to AK,AE,AA,AE,AE,AE,AP,GU,HI,PR,VI Free shipping over $35 Sold out $0.17 Quantity Sold Out Sold out Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: Size: 1/2" SAE approved alloy coil spring steel Tempered for non-linking positive locking Greater resistance to high temperature Not brittle at low temperature Greater resistance to loosening from vibration Tighter assemblies due to greater bolt tension per unit of torque Zinc; yellow plating for corrosion resistance ASME B18.21.1 approved ASTM B633 Type II SC1 Per package of 100 FEATURES MFR: 76174 SKU: 42612780 Brand: Imperial