Sirius 12.9 Grade Socket Head Cap Screws UNC

Sirius 12.9 Grade Socket Head Cap Screws UNC are high-performance fastening components engineered for demanding mechanical, industrial and engineering applications where exceptional strength and reliability are essential. Manufactured from Grade 12.9 high tensile alloy steel with a Unified National Coarse (UNC) thread, these screws deliver outstanding clamping force under high loads.

The cylindrical socket head and internal hex drive enable high torque tightening with minimal installation clearance — ideal for restricted spaces. Precision-machined UNC threads ensure secure engagement with compatible UNC threaded holes or nuts across machinery, automotive, manufacturing and maintenance environments.

Available in diameters from No.10 UNC to 3/4 UNC, with lengths ranging from 3/8" to 5", in pack quantities of 25 to 200.

Features and Benefits:
• Manufactured from high-strength Grade 12.9 alloy steel
• UNC (Unified National Coarse) thread for compatibility with UNC fasteners
• Socket head design for high torque tightening
• Internal hex drive for secure installation
• Excellent tensile strength for demanding applications
• Precision-machined threads for reliable fastening
• Compact head design ideal for restricted spaces
• Suitable for heavy-duty engineering and industrial use