Standard: BS 3692 (British Standard for precision hexagon bolts, screws, and nuts)
Thread Size: M2 (Metric thread, 2 mm nominal diameter)
Thread Pitch (Coarse): 0.4 mm (fine pitch version: M2×0.25 may exist for specialty precision use)
Thread Type: ISO metric, 60° thread angle
Bolt Types Covered: Hex bolts, hex screws, and set screws
Material Grades: Typically in A2/A4 stainless steel, brass, mild steel, or nylon
Tolerances: External thread tolerance 6g (fine fit per BS 3692)
Head Type: Hexagonal (standard head dimensions per BS 3692)
Applications: Ideal for compact electronics, robotics, watches, cameras, miniature mechanical assemblies, and instrumentation
M2 Bolt – BS 3692 Standard
