S-91770A877 3/8"-16 x 1 3/4" 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 and outdoor applications.
- Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high stress.
- Enhanced load distribution thanks to the wide rounded truss head design, reducing surface pressure and preventing material damage.
- Secure and efficient installation with a Phillips No. 4 drive, ensuring compatibility with common tools and reducing cam-out risks.
- Reliable coarse UNC threading with Class 2A fit for quick assembly and consistent engagement in various materials.
- Optimized partial threading on a 1 3/4" length provides unthreaded shank strength where needed, improving shear resistance.
- Full regulatory compliance meeting ASME B18.6.3 standards, RoHS 3, and REACH, ensuring safety and environmental responsibility.
Professional Applications & Engineering Value
This 3/8"-16 UNC Rounded Truss Head Screw is engineered to address common industrial fastening challenges, such as vibration loosening and corrosion-induced failure. The passivated 18-8 stainless steel provides excellent resistance to rust and chemical exposure, making it suitable for applications in manufacturing, automotive, and construction where durability is critical. The rounded truss head offers a larger bearing surface, distributing clamp load effectively to prevent sheet metal distortion or plastic component cracking. Combined with a coarse thread and Phillips drive, it ensures rapid, secure installation in both soft and hard materials, reducing assembly time and maintenance needs in high-stress environments.
Specification Summary & Compliance
This screw features a 3/8"-16 UNC coarse thread with Class 2A thread fit for standard tolerance and easy assembly. It is manufactured in compliance with ASME B18.6.3 specifications, ensuring dimensional accuracy and performance reliability. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for industrial use.
