PBC Linear SRM25 0600 SL Linear Shaft Support Rail, Aluminum, 25 mm Shaft Dia, 600 mm Lg DV 85N Features Very Thin Nose Features Very Thin Nose NOM 057 Certified Material Aluminum Mounting Hole Center to Center 200 mm Finish Unfinished For Use With Linear Shafting Shaft Material Carbon Steel Product Type Linear Support Rail Shaft Material Grade 1060 Standards ISO System of Measurement Metric Support Rail Material Aluminum Support Rail Drilling Undrilled Mounting Surface to Shaft Center 42 mm Mounting Hole Type Threaded Series SRM Profile Type Standard Profile Mounting Hole Center to Shaft End 100 mm Surface Hardness Minimum 60 HRC Country of Origin United States Mounting Hole Center to Shaft End 100 mm