S-90344A146 M4 x 12 mm ASTM A574 Socket Head Screws with Flat Washer
Socket Head Screws with Flat Washer
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Washer & Nut
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced corrosion resistance with black-oxide coating on both screw and washer, extending service life in demanding environments.
- Superior tensile strength of 170,000 psi ensures reliable, high-load fastening without failure in critical assemblies.
- Optimized thread engagement with Class 6g fit and coarse pitch for faster installation and reduced cross-threading risks.
- Integrated flat washer distributes clamping force evenly, preventing surface damage and improving joint integrity.
- Consistent hardness at Rockwell C39 provides excellent wear resistance and durability under vibration.
- Standard hex socket drive allows for high-torque application with common 3mm tools, simplifying maintenance.
- Full threading along the 12mm length offers flexible positioning and secure fastening across varied material thicknesses.
Professional Applications & Engineering Value
Engineered for precision and endurance, these M4 socket head cap screws with integrated flat washers address common industrial challenges like vibration loosening and surface marring. The black-oxide alloy steel construction resists rust and wear, making them ideal for machinery, automotive, and equipment assembly where exposure to oils or moisture is frequent. The coarse thread pitch and Class 6g thread fit ensure quick, accurate installation in metals or plastics, reducing assembly time while maintaining high tensile strength. This combination of metric socket screw design and protective finish delivers reliable performance in tight spaces, supporting long-term operational stability.
Specification Summary & Compliance
This product adheres to metric system dimensions with M4 x 0.7mm coarse threads and Class 6g tolerance for precise fit. Manufactured to ASTM A574 specifications, it meets rigorous standards for socket head cap screws. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) ensures environmental safety and suitability for global industrial markets.
