Our bolts are engineered to meet demanding industrial standards — ensuring optimal grip, tension, and corrosion resistance under high-performance applications. Every piece is cold-forged and heat-treated to deliver consistent hardness and durability. Whether used in heavy machinery, construction, or automotive assembly, these bolts maintain reliability where it matters most. NOTE: • All dimension are in millimeter. • All sharp edges are to be broken R2. • Tolerance and unspecified limit: • Angular: ±0°30’ • Decimal: 0.00 ±0.25 • Decimal: 0.0 ±0.5 • Material: S45C • Drawing Title: BOLT Ø55 × 233