Compression Spring Conical 302 Stainless Steel Finish Plain Overall Length 1 1/2 In Wire Type Round Wire Dia 0.049 In End Type Squared and Not Ground Large Outside Dia 0.975 In Small Outside Dia 0.438 In LD @ 50% FREE LENGTH 3.88 Lbs LOAD @ SOLID 7.26 Lbs Spring Rate 5.18 Lbs/In Meets/Exceeds ASTM A313