Grade 10.9 self colour hexagon head bolts provide a high-strength fastening solution for demanding engineering and mechanical applications. Supplied in their natural steel finish, these bolts are ideal for situations where components will be painted, coated, welded or used indoors away from corrosive environments. Manufactured to ISO 4014 / DIN 931, they feature a partially threaded shank designed to deliver exceptional clamping force and reliable mechanical performance under load.

Typical applications include machinery assembly, structural steelwork, heavy equipment mounting, automotive repairs and general engineering tasks requiring enhanced tensile strength. When paired with matching nuts and washers, Grade 10.9 bolts offer consistent tightening behaviour and dependable load distribution. Their combination of precision, strength and versatility makes them a trusted choice for high-performance mechanical and construction environments.