Compression Spring Conical 302 Stainless Steel Finish Plain Overall Length 1/2 In Wire Type Round Wire Dia 0.038 In End Type Squared and Not Ground Large Outside Dia 0.600 In Small Outside Dia 0.281 In LD @ 50% FREE LENGTH 3.22 Lbs LOAD @ SOLID 5.45 Lbs Spring Rate 12.88 Lbs/In Meets/Exceeds ASTM A313