S-90271A636 3/8"-16 x 3" ASME B18.6.3 Steel Truss Head Slotted Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc plating for reliable performance in demanding industrial environments
• Superior load distribution from the wide truss head design, reducing surface pressure and material damage
• High tensile strength of 60,000 psi ensures dependable fastening under heavy loads and vibration
• Easy installation and removal with standard slotted drive and fully threaded UNC coarse thread design
• Precise Class 2A thread fit guarantees consistent engagement and reduces cross-threading risks
• Rockwell B69 hardness provides excellent durability and resistance to wear during repeated use
• Compliance with ASME B18.6.3 ensures dimensional accuracy and interchangeability in assemblies

Professional Applications & Engineering Value

These zinc-plated steel truss head screws are engineered for heavy-duty industrial applications where vibration resistance and long-term reliability are critical. The wide rounded truss head distributes clamping force over a larger surface area, preventing damage to softer materials and reducing the risk of loosening under dynamic loads. With a fully threaded UNC coarse thread design and Class 2A thread fit, they deliver maximum holding power in wood, metal, and composite assemblies. The 60,000 psi tensile strength and Rockwell B69 hardness make them ideal for machinery, automotive, and construction applications where high-strength fasteners are required to maintain structural integrity under stress.

Specification Summary & Compliance

This screw features precise UNC coarse threads (3/8"-16) with Class 2A thread fit for consistent engagement and assembly efficiency. Manufactured to ASME B18.6.3 specifications for dimensional accuracy and performance reliability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in various industrial sectors.