Compression Spring Conical 302 Stainless Steel Finish Plain Overall Length 3/8 In Wire Type Round Wire Dia 0.042 In End Type Squared and Not Ground Large Outside Dia 0.600 In Small Outside Dia 0.281 In LD @ 50% FREE LENGTH 4.35 Lbs LOAD @ SOLID 6.75 Lbs Spring Rate 23.19 Lbs/In Meets/Exceeds ASTM A313