S-90316A213 4-40 x 3/8" ASME B18.6.3 Stainless Steel Flanged Hex Head Screws with Slotted Drive
Stainless Steel Flanged Hex Head Screws with Slotted Drive
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
- High tensile strength of 100,000 psi ensures secure, durable fastening under heavy loads and vibration.
- Flanged head design eliminates the need for a separate washer, providing increased bearing surface and simplified installation.
- Coarse UNC threads with Class 2A fit offer faster assembly and reduced risk of cross-threading in industrial applications.
- External hex drive with slotted option allows for versatile tool compatibility and high-torque application.
- Full threading along the 3/8" length ensures maximum grip and adjustment flexibility in various material thicknesses.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees consistent quality, safety, and environmental standards.
Professional Applications & Engineering Value
This 4-40 UNC hex head screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. The 18-8 Stainless Steel material provides excellent resistance to rust and oxidation, making it suitable for outdoor equipment, marine applications, and chemical processing plants. The flanged design distributes clamping force evenly, reducing surface damage and preventing loosening under dynamic loads. With its coarse thread and Class 2A fit, it ensures quick, reliable installation in metals and plastics, minimizing production downtime. Ideal for machinery, automotive components, and electronic enclosures, this screw delivers consistent performance where high-strength and corrosion-resistant fasteners are critical.
Specification Summary & Compliance
This screw features precise UNC coarse threads with Class 2A tolerance for reliable fit and function. It adheres to ASME B18.6.3 manufacturing standards, ensuring dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for various industrial and consumer applications.
