Compression Spring, Conical, 302 Stainless Steel, Finish Plain, Overall Length 3/4 In, Wire Type Round, Wire Dia 0.049 In, End Type Squared and Not Ground, Large Outside Dia 0.850 In, Small Outside Dia. 0.438 In, LD @ 50% FREE LENGTH 4.26 Lbs, LOAD @ SOLID 7.40 Lbs, Spring Rate 11.35 Lbs/In, Meets/Exceeds ASTM A313