Compression Spring, Heavy Duty, Color Dark Gray, Music Wire, Finish Plain, Overall Length 1-1/4 In., Outside Dia. 23/64 In., Wire Type Round, Wire Dia. 0.051 In., End Type Squared and Ground, Large Outside Dia. 0.360 In., Small Outside Dia. 0.125 In., Compressed Length 0.603 In., Deflection @ Load 0.44 In., Spring Rate 37 lb./in., Meets/Exceeds ASTM A228 and AMS 5112, Package Quantity 10