Standard: BS 3692 (British Standard for precision hex bolts, screws, and nuts)
Thread Size: M42 (Metric thread, 42 mm nominal diameter)
Thread Pitch (Coarse): 4.5 mm (fine pitch options like M42×3.0 or M42×2.0 are also available)
Thread Type: ISO metric, 60° thread angle
Bolt Types Covered: Hex bolts, hex screws, set screws (partially or fully threaded)
Material Grades: Commonly 8.8, 10.9, or stainless steel depending on load and corrosion resistance requirements
Tolerances: External thread tolerance 6g (standard fit per BS 3692)
Head Type: Hexagonal head (BS 3692 standard dimensions)
Applications: Large machinery, structural steelwork, marine equipment, wind power, turbines, and infrastructure
M42 Bolt – BS 3692 Standard
