S-91770A196 8-32 x 5/8" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws
Stainless Steel Truss Head Phillips Screws
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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 thanks to passivated 18-8 stainless steel, ideal for harsh environments and long-term reliability.
- High tensile strength of 70,000 psi ensures dependable load-bearing capacity and resistance to mechanical stress in demanding applications.
- Rockwell B70 hardness provides excellent durability and wear resistance, reducing the risk of stripping or damage during installation.
- Wide truss head design offers a larger bearing surface for improved load distribution and reduced risk of surface damage.
- Class 2A thread fit with UNC coarse spacing allows for easy, quick assembly while maintaining secure fastening in various materials.
- No. 2 Phillips drive ensures common tool compatibility and efficient installation with standard screwdrivers or drivers.
- Fully threaded shank maximizes grip and holding power along the entire length for consistent performance in assemblies.
Professional Applications & Engineering Value
Engineered for industrial and commercial assemblies, these rounded truss head machine screws address common challenges like vibration loosening and corrosion in machinery, electronics, and structural applications. The passivated 18-8 stainless steel provides a robust barrier against moisture and chemicals, extending service life in demanding conditions. With a UNC coarse thread and Class 2A fit, they facilitate rapid installation while maintaining precise alignment, reducing assembly time and improving productivity. The wide truss head profile distributes clamping force evenly, minimizing the risk of material deformation—ideal for sheet metal, plastics, and composite materials where a secure, flush fit is critical.
Specification Summary & Compliance
This screw features precise UNC coarse threads with Class 2A fit for consistent engagement and tolerance. It adheres to ASME B18.6.3 manufacturing standards, ensuring dimensional accuracy and reliability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety requirements for global industrial use.
