Compression Spring Heavy Duty Color Silver Stainless Steel Finish Plain Overall Length 1-1/4 in Outside Dia 39/64 in Wire Type Round Wire Dia 0.072 in End Type Squared and Ground Large Outside Dia 0.360 in Small Outside Dia 0.125 in Compressed Length 0.581 in Deflection @ Load 0.53 in Spring Rate 37 lb./in Meets/Exceeds ASTM A313 and AMS 5688 Package Quantity 10