Standard: BS 3692 (British Standard for precision hexagon bolts, screws, and nuts)
Thread Size: M33 (Metric thread, 33 mm nominal diameter)
Thread Pitch (Coarse): 3.5 mm (fine thread versions like M33×2.0 or M33×1.5 available)
Thread Type: ISO metric, 60° thread angle
Bolt Types Covered: Hex bolts, hex screws, set screws
Material Grades: Typically available in property classes 8.8, 10.9, or stainless steel
Tolerances: External thread tolerance 6g (standard metric fit per BS 3692)
Head Type: Hexagonal head (standard dimensions as per BS 3692)
Applications: Used in structural steelwork, cranes, industrial machinery, heavy equipment, and infrastructure projects
M33 Bolt – BS 3692 Standard
