Standard: BS 3692 (British Standard for precision hexagon bolts, screws, and nuts)
Thread Size: M18 (Metric thread, 18 mm nominal diameter)
Thread Pitch (Coarse): 2.5 mm (fine pitch options like M18×2.0 or M18×1.5 are also available)
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 steel for strength and corrosion resistance
Tolerances: External thread tolerance 6g (medium fit as per BS 3692)
Head Type: Hexagonal (standard dimensions per BS 3692)
Applications: Automotive components, steel fabrication, industrial machinery, construction, piping systems
M18 Bolt – BS 3692 Standard
