Socket Head Cap 1/2 x 5' UNC Black Gr.12.9 BS 2470

Cap Screw
Hexagon Socket Head
Imperial UNC Black
High Tensile Grade 12.9
Dia: 1/2'
TPI: 13
Length: 5'
BS 2470
Allen Key Size: 3/8'
A grade 12.9 black imperial UNC hexagon socket head cap screw is an ultra-high strength (approx. 1220 MPa tensile strength), heat-treated alloy steel fastener featuring the traditional Unified (UNC) coarse thread profile and an internal hex drive. The black oxide finish provides minimal corrosion resistance, making it suitable for indoor use in critical, high-stress applications such as heavy machinery assembly and structural work where compatibility with legacy UNC systems is required.