Compression Spring Conical 302 Stainless Steel Finish Plain Overall Length 1/2 In Wire Type Round Wire Dia 0.063 In End Type Squared and Not Ground Large Outside Dia 0.850 In Small Outside Dia 0.375 In LD @ 50% FREE LENGTH 11.09 Lbs LOAD @ SOLID 16.60 Lbs Spring Rate 44.33 Lbs/In Meets/Exceeds ASTM A313