S-91770A871 5/16"-18 x 2 1/4" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws
Stainless Steel Truss Head Phillips Screws
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 passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- Enhanced load distribution from the wide rounded truss head design, reducing surface damage and improving joint integrity
- High-strength performance with 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
- Secure fastening with Class 2A thread fit and UNC coarse threading, ensuring reliable engagement and vibration resistance
- Efficient installation using the No. 4 Phillips drive, compatible with standard tools for quick assembly
- Optimized thread engagement through partial threading, providing precise control in various material thicknesses
- Regulatory compliance meeting ASME B18.6.3, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
Engineered for industrial applications requiring durability and precision, this 5/16"-18 UNC rounded truss head screw addresses common challenges like material fatigue and environmental exposure. The passivated 18-8 stainless steel offers excellent resistance to corrosion and oxidation, extending service life in settings such as machinery assembly, electrical enclosures, and outdoor structures. Its coarse thread design facilitates quick installation in softer materials, while the wide truss head distributes clamping force evenly, preventing surface damage and maintaining seal integrity. With partial threading, it allows for adjustable grip length, making it versatile for varied panel thicknesses in construction and automotive sectors, ensuring reliable performance under high-stress conditions.
Specification Summary & Compliance
This screw features precise Class 2A thread fit and UNC coarse threading with a diameter of 0.313" and length of 2 1/4", adhering to ASME B18.6.3 manufacturing standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material quality for industrial use.
