Standard: BS 3692 (British Standard for precision hexagon bolts, screws, and nuts)
Thread Size: M5 (Metric thread, 5 mm nominal diameter)
Thread Pitch (Coarse): 0.8 mm (fine pitch options like M5×0.5 also exist)
Thread Type: ISO metric, 60° thread angle
Bolt Types Covered: Hex bolts, hex screws, and set screws
Material Grades: Common in 8.8, 10.9, A2/A4 stainless, and mild steel
Tolerances: External thread tolerance 6g (standard medium fit per BS 3692)
Head Type: Hexagonal (dimensions per BS 3692 specifications)
Applications: Used in electronics, precision devices, small machinery, appliances, and lightweight assembly work
M5 Bolt – BS 3692 Standard












