S-91770A649 3/8"-16 x 1/2" 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 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 material stress
- High mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under heavy loads
- Quick and secure installation using the Phillips No. 4 drive and coarse UNC threading, minimizing assembly time
- Precise thread fit with Class 2A tolerance ensuring consistent engagement and vibration resistance
- Full threading along the 1/2" length provides maximum grip and holding power in various material thicknesses
- Compliance with major standards including ASME B18.6.3, RoHS 3, and REACH for guaranteed quality and environmental safety
Professional Applications & Engineering Value
This 3/8"-16 x 1/2" passivated stainless steel rounded truss head screw is engineered to address common industrial challenges such as material fatigue, corrosion, and assembly efficiency. The 18-8 stainless steel with passivation offers excellent resistance to oxidation and chemical exposure, making it suitable for outdoor equipment, marine hardware, and food processing machinery. The rounded truss head provides a larger bearing surface, distributing clamp load effectively to prevent damage to soft materials and reduce the risk of loosening under vibration. With its coarse UNC thread spacing and fully threaded design, it ensures rapid installation and strong retention in wood, metal, and plastic assemblies, streamlining production workflows while maintaining structural integrity.
Specification Summary & Compliance
This screw features a Class 2A thread fit for standard tolerance and interchangeability, adhering to UNC thread specifications with coarse spacing. Manufacturing and dimensional compliance are confirmed with ASME B18.6.3 standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial and consumer applications.
