PBC Linear NIPDM20 0150 SL Pre Drilled Linear Shaft, Polished Carbon Steel, 20 mm Dia, 150 mm Lg 415A EP Lined Bearings Finish Polished Type Lined Bearings Finish Polished Type Solid Shaft System of Measurement Inch Surface Roughness 8 uin Tolerance Class L Operating Temperature Minimum 0 Degrees F Series NILSS Core Type Solid Operating Temperature Maximum 400 Degrees F Surface Hardness Minimum 50 HRC Weight Per Inch 0 100 Material Alloy Steel Number of Tools 10 Handle Type One Piece Non Magnetic No Opening Type Rounded Nonsparking No Box End Type 12 Point Box End Opening Angle (Deg Mounting Hole Thread Size M6 x 1 Shaft Type Pre Drilled Shaft