Compression Spring Conical 302 Stainless Steel Finish Plain Overall Length 1 In Wire Type Round Wire Dia 0.045 In End Type Squared and Not Ground Large Outside Dia 0.850 In Small Outside Dia 0.438 In LD @ 50% FREE LENGTH 3.28 Lbs LOAD @ SOLID 5.97 Lbs Spring Rate 6.56 Lbs/In Meets/Exceeds ASTM A313