Keyed Shafting Dia. tolerance: -0.001/-0.0025 Key width tolerance: +0.003/-0.000 Straightness tolerance: 0.012 per ft. All material is furnished as cold-drawn, ground, and polished. Manufactured to ANSI B17.1-1967, R1973 standards. This listing is for each. Technical Specification Item Keyed Shaft Diameter 15mm Keyway 5mm x 3mm Length 1000mm Material Carbon Steel Grade 1045 Standards ANSI B17.1-1967, R1973, ASTM A-108