Metric Inch PRODUCT SIZEPROPERTY CLASSSTANDARDSystem HR Structural BoltM12 to M368.8 / 10.9BS EN 14399-3System HR Pre-Load NutM12 to M368 / 10BS EN 14399-3Plain Chamfered WasherM12 to M36HV 300 to 370BS EN 14399-6System HV Structural BoltM12 to M3610.9BS EN 14399-4System HV Pre-Load NutM12 to M3610BS EN 14399-4Tension Control Structural BoltM12 to M3010.9BS EN 14399-10Pre-Load NutM12 to M3010BS EN 14399-10 (h=d)Non Pre-Load Structural BoltM12 to M364.6,5.6,6.8,8.8,10.9BS EN 15048-1, 2Non Pre-Load Structural NutM12 to M364,5,6,8,10,12BS EN 15048-1, 2High - Strength Structural BoltM12 to M368.8AS1252 - 1983 DimensionalAS1252 - 1996 MechanicalStructural NutM12 to M368AS1252 - 1983 DimensionalAS1252 - 1996 MechanicalStructural WasherM12 to M3635-45 HRCAS1252 - 1983 DimensionalAS1252 - 1996 MechanicalHeavy Hex Structural BoltM16 to M3610.9SIS 3757Heavy Hex NutM16 to M3610S / 8SIS 6623Structural WasherM16 to M3635 - 45 HRC (Plain)26 - 45 HRC min (HDG)IS 6649 PRODUCT SIZETENSILE STRENGTHSTANDARDHeavy Hex Structural Bolt1/2 to 1 1/4120,000 psi(1/2 to 1 dia)105,000 psi (1 1/8 to 1 1/2 dia)ASTM A325Heavy Hex Structural Bolt1/2 to 1 1/4150,000 - 173,000 psiASTM A490Heavy Hex Nuts Grade DH1/4 to 2C24 - C38ASTM A563Heavy Hex Nut Grade 2H1/4 to 224 - 35 HRCASTM A194 2HHardened Washer1/4 to 1 3/838 - 45 HRC (Coated)26-45 HRC (HDG)ASTM F436Tension Control Structural Bolt5/8 to 1 1/8120,000 psi (1/2 to 1 dia)105,000 psi (1 1/8 to 1 1/2 dia)ASTM F1852Tension Control Structural Bolt1/2 to 1 1/8150,000 - 173,000 psiASTM F2280
