S-90316A212 4-40 x 5/16" ASME B18.6.3 Stainless Steel Flanged Hex Head Screws with Slotted Drive
Stainless Steel Flanged Hex Head Screws with Slotted Drive
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
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 significant mechanical stress.
- Flanged hex head design provides increased bearing surface for better load distribution and prevents pull-through.
- Class 2A thread fit offers consistent, reliable engagement for simplified assembly and reduced cross-threading risks.
- Coarse UNC threads enable faster installation and superior performance in softer materials or where debris is present.
- External hex drive with slotted option allows for versatile tool compatibility and high-torque application.
- Full threading along the entire length ensures maximum grip and adjustability in various material thicknesses.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 4-40 UNC hex head screws in 18-8 stainless steel deliver exceptional performance where corrosion resistance and mechanical strength are critical. The flanged design eliminates the need for separate washers, reducing part count and assembly time in machinery, electronics, and automotive assemblies. With a Rockwell B100 hardness and coarse UNC threading, they provide reliable fastening in vibration-prone environments and softer substrates, minimizing loosening. The external hex drive accommodates standard tools for efficient installation, making them a versatile choice for maintenance and production lines seeking durable, compliant fasteners that meet rigorous industry standards.
Specification Summary & Compliance
This screw features a 4-40 UNC thread size with Class 2A thread fit for precise dimensional accuracy as per unified inch standards. Manufacturing and quality adhere to ASME B18.6.3 specifications, ensuring consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and material restrictions adherence for global supply chain integration.
