Cotter Pin, Extended Prong, Low Carbon Steel, 1008, Zinc Plated, 3/8 in Pin Dia./ DIAMETER: 0.375 INCHES NOMINAL UNDERLOOP LENGTH: 3.00 INCHES NOMINAL POINT TYPE: EXTENDED PRONG SQUARE CUT MATERIAL: STEEL OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: SAE HS1086 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL OR ASTM DS-56 ASSN STD SINGLE MATERIAL RESPONSE SURFACE TREATMENT: PHOSPHATE MANGANESE OVERALL OR PHOSPHATE ZINC STYLE DESIGNATOR: A1 STANDARD