Compression Spring Conical 302 Stainless Steel Finish Plain Overall Length 3/8 In Wire Type Round Wire Dia 0.035 In End Type Squared and Not Ground Large Outside Dia 0.480 In Small Outside Dia 0.187 In LD @ 50% FREE LENGTH 3.92 Lbs LOAD @ SOLID 6.37 Lbs Spring Rate 20.91 Lbs/In Meets/Exceeds ASTM A313