Standard: BS 3692 (British Standard for precision hexagon bolts, screws, and nuts)
Thread Size: M30 (Metric thread, 30 mm nominal diameter)
Thread Pitch (Coarse): 3.5 mm (fine pitch versions like M30×2.0 or M30×1.5 also available)
Thread Type: ISO metric, 60° thread angle
Bolt Types Covered: Hex bolts, hex screws, and set screws
Material Grades: Commonly available in 8.8, 10.9, or stainless steel (for high strength and corrosion resistance)
Tolerances: External thread tolerance 6g (standard fit according to BS 3692)
Head Type: Hexagonal (dimensions per BS 3692 specifications)
Applications: Used in bridges, building structures, turbines, machines, wind towers, heavy-duty equipment
M30 Bolt – BS 3692 Standard





