Compression Spring, Conical, 302 Stainless Steel, Finish Plain, Overall Length 5/8 In, Wire Type Round, Wire Dia 0.035 In, End Type Squared and Not Ground, Large Outside Dia 0.600 In, Small Outside Dia. 0.281 In, LD @ 50% FREE LENGTH 2.41 Lbs, LOAD @ SOLID 4.28 Lbs, Spring Rate 7.7 Lbs/In, Meets/Exceeds ASTM A313