Transcription of Hex Bolts - Blacks Fasteners
1 Hex Bolts Tensile / Yield / Shear Strength Tightening Torque HEX Bolts - RECOMMENDED TIGHTENING TORQUE. CLASS Tensile Proof Shear Size Pitch Stress Area Core Area Recommended Tightening Torque Strength Strength Strength (mm) (mm ) (mm ) (kN) (kN) (kN) Plain (Nm) Zinc (Nm) HDG (Nm). M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39 M42 M48 M56 M64 Note: The tightening torque values given in the above table serve only as a guide. A k factor of has been used which assumes threads are plain finish, burr free with a light oil coating. It should be noted that these figures are based on the first tightening of single assemblies in isolation. Quality Fasteners Since 1935 August 2007.
