DIMENSIONAL SPECIFICATIONS: Thread Size: 3/8"-16 (Coarse Thread); Head Dia: 0.78"; Screw Length: 1.75 inch (measured from the flat top of the head to the tip of the threads). Please verify your required length using this method before ordering to ensure a perfectly flush fit PREMIUM 304 STAINLESS STEEL (ASME COMPLIANT): Manufactured to strict ASME B18.6.3 standard specifications for machine screws. Forged entirely from 100% solid 304 (18-8) stainless steel, offering superior tensile strength and lifetime resistance against oxidation, rust, and chemical corrosion in damp environments UNIVERSAL 3/8"-16 EXTREME HEAVY-DUTY FIT: The massive 3/8"-16 thread provides ultimate shear and tensile strength for extreme structural hardware. Choose short lengths for thick steel plate fabrication, heavy engine mounts, and industrial manufacturing jigs; standard lengths for custom automotive chassis, tractor implements, and heavy marine engine mounting; or extended lengths for bolting large structural beams and heavy construction hardware TRUE FLUSH MOUNT & HIGH TORQUE DRIVE: Engineered with a standard 82-degree countersunk Flat Head that sits perfectly flush with the mounting surface, eliminating snag hazards and providing a sleek, aerodynamic profile. The deep Hex Socket (Allen) drive handles significantly higher torque than Phillips screws, completely eliminating cam-out and stripped heads during assembly INSTALLATION & ATTENTION TIPS: A large 7/32" Hex Key (Allen Wrench) is strictly required for all 3/8"-16 lengths. Warning: The 0.78" head is exceptionally wide; ensure your pre-drilled holes are deeply and precisely countersunk at an 82-degree angle to achieve a flawless flush finish. When threading into other stainless steel nuts or blind holes, using an anti-seize lubricant is absolutely mandatory to prevent severe thread galling (cold welding) under extreme structural tension PREMIUM FLAT HEAD SOCKET CAP SCREWS
Engineered for precision and high torque, these ASME B18.3 compliant fasteners feature a standard 82-degree countersink for a perfectly flush mount. The deep hex (Allen) drive handles extreme tension and prevents stripping.

100% Solid 304 Stainless Steel (18-8)
Delivers lifetime rust and corrosion resistance. Ideal for robotics, woodworking jigs, PC builds, and heavy machinery.

⚠️ CRITICAL MEASUREMENT NOTE:
Industry standards dictate that the specified length INCLUDES the head. Measure from the flat top surface down to the tip of the threads to ensure an exact fit for your project.