Compression Spring, Conical, 302 Stainless Steel, Finish Plain, Overall Length 1 1/4 In, Wire Type Round, Wire Dia 0.042 In, End Type Squared and Not Ground, Large Outside Dia 0.850 In, Small Outside Dia. 0.375 In, LD @ 50% FREE LENGTH 2.70 Lbs, LOAD @ SOLID 5.04 Lbs, Spring Rate 4.32 Lbs/In, Meets/Exceeds ASTM A313