Standard: BS 3692 (British Standard for precision hexagon bolts, screws, and nuts)
Thread Size: M64 (Metric thread, 64 mm nominal diameter)
Thread Pitch (Coarse): 6.0 mm (unless otherwise specified as fine thread, e.g., M64×4)
Thread Type: ISO metric, 60° thread angle
Bolt Types Covered: Hex bolts, hex screws, set screws
Material Grades: Commonly 8.8, 10.9, or stainless/high-tensile steel
Tolerances: External thread tolerance 6g (standard fit)
Head Type: Hexagonal head (as per BS 3692 specifications)
Applications: Structural engineering, heavy machinery, pressure vessels, marine equipment, and large-scale mechanical assemblies
M64 Bolt – BS 3692 Standard
