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Socket Flat Countersunk Head Cap Screw, 5/16-18 x 1", Alloy Steel, Black Oxide, Hex Socket (Quantity: 100) Coarse Thread, 5/16 inch Hexagonal Allen Bolt, Length: 1 inch, Full Thread
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US$23.99 cheaper than the new price!!
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Product details
| Management number | 216214649 | Release Date | 2026/04/19 | List Price | US$16.00 | Model Number | 216214649 | ||
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| Category | |||||||||
- GRADE 8 FLAT HEAD SOCKET CAP SCREWS - Premium alloy steel countersunk socket head cap screws meet SAE J429 Grade 8 specifications with 150,000 PSI minimum tensile strength, providing superior flush-mount fastening for machinery, automotive, and precision equipment requiring hidden fastener heads
- FLUSH COUNTERSUNK HEAD DESIGN - 82-degree flat head sits completely flush with mounting surface when properly countersunk, eliminating protrusions and creating smooth, snag-free surfaces ideal for moving parts, aesthetic applications, and installations requiring low-profile fastening solutions
- PROTECTIVE BLACK OXIDE FINISH - Industrial-grade black oxide coating provides corrosion resistance for indoor and workshop environments, uniform matte black appearance for professional installations, and enhanced lubricity for smoother threading without affecting dimensional tolerances. Black Oxide is not a protective finish and will rust if exposed to moisture. Stainless Steel material is recommended for environments with moisture
- HIGH-STRENGTH ALLOY STEEL CONSTRUCTION - Heat-treated Grade 8 alloy steel delivers exceptional holding power and resistance to shearing forces, outperforming Grade 5 and Grade 2 fasteners in high-stress applications including engine components, structural assemblies, and safety-critical installations
- INTERNAL HEX SOCKET DRIVE - Recessed hexagonal socket accepts standard Allen keys or hex drivers, allowing high torque application while maintaining completely flush surface after installation, perfect for applications where protruding bolt heads would interfere with function or appearance
- FULLY THREADED 1 INCH LENGTH - Complete threading from tip to head provides maximum adjustment flexibility for various material thicknesses, ensures adequate thread engagement in tapped holes, and allows use with washers, spacers, and lock washers as needed
- PRECISION 5/16-18 COARSE THREADING - Standard UNC (Unified National Coarse) thread specification ensures broad compatibility with existing tapped holes, threaded inserts, and standard hex nuts across countless mechanical assembly and fabrication applications
- VERSATILE INDUSTRIAL APPLICATIONS - Ideal for CNC equipment, robotics, 3D printers, electronics enclosures, automotive modifications, machinery guards, access panels, woodworking, cabinetry, and any application requiring flush-mount high-strength fasteners with clean finished appearance
- ASME B18.3 COMPLIANT MANUFACTURING - Precision-machined to strict dimensional tolerances with accurate head angles, concentric socket alignment, and uniform thread pitch, ensuring reliable performance, proper countersink fit, and consistent quality across every fastener in the package
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