5/16 x 1 1/4 inch UNC Hex Bolt Black Grade 8.8 High Tensile steel Hexagon bolts Din 933 Pack of 4
5/16 inch x 1-1/4 inch UNC Hex Bolt - Black Grade 8.8 High Tensile - DIN 933 - Pack of 4
Black self-colour 5/16 inch UNC hex bolts, 1-1/4 inch long, manufactured from Grade 8.8 high tensile steel to DIN 933. The full-thread hexagon head design provides excellent grip across a wide range of materials and is compatible with standard spanners and sockets. Grade 8.8 offers a minimum tensile strength of 800 MPa, making these bolts significantly stronger than standard Grade 4.6 fasteners and suitable for demanding structural and engineering applications.
- Thread: 5/16 inch UNC
- Length: 1-1/4 inch
- Grade: 8.8 High Tensile (Black Self-Colour)
- Head style: Hexagon (DIN 933 fully threaded)
- Pack quantity: 4 bolts
- Applications: General engineering, structural assemblies, machinery, metalwork
- Note: Not suitable for marine environments or direct replacement in safety-critical applications without engineering sign-off
A versatile high-strength bolt for industrial and engineering use where UNC thread form is required. The black finish provides a degree of corrosion resistance for general indoor and sheltered outdoor use.