PBC Linear NIL08 018.000 Linear Shaft, Solid, 1 2 in Dia, 18 in Lg, Carbon Steel, Polished 49AG03 Length 35 in Length 35 in Water Resistant Batteries Included No Batteries Included Fire Protection Fire Rated Number of Locking Bolts 4 Locking Style Mechanical Combination Maximum User Codes 1 Weight 85 055 lb Surface Hardness Minimum 60 HRC Core Type Solid Tolerance Class L Roughness 8 12 uin RMS Series NIL Operating Temperature Maximum 400 Degrees F Shaft Type Solid Shaft Operating Temperature Minimum 0 Degrees F End Type Plain Ends Country of Origin United States Surface Hardness 60 RC For Use With Linear Ball Bearings