S-91770A651 3/8"-16 x 3/4" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction for long-lasting performance in harsh environments
• Enhanced load distribution from the wide truss head design that reduces surface damage and prevents pull-through
• High tensile strength of 70,000 psi ensures reliable fastening in demanding industrial applications
• Excellent drive engagement with Phillips No. 4 drive for efficient installation and reduced cam-out risk
• Precise thread fit with Class 2A UNC coarse threads for quick assembly and vibration resistance
• Full threading along the 3/4" length provides maximum grip and adjustment flexibility
• Compliance with major standards including ASME B18.6.3, RoHS 3, and REACH for quality assurance

Professional Applications & Engineering Value

These 3/8"-16 UNC rounded truss head screws deliver exceptional engineering value across multiple industrial sectors. The passivated 18-8 stainless steel construction provides outstanding corrosion resistance, making them ideal for outdoor equipment, marine applications, and food processing machinery where moisture exposure is common. The unique truss head design offers a larger bearing surface than standard round heads, distributing clamping force more effectively to prevent damage to softer materials. With their coarse UNC threading and Class 2A fit, these screws enable rapid assembly in production environments while maintaining secure fastening in high-vibration applications such as automotive assemblies, electrical enclosures, and heavy machinery. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures these fasteners withstand substantial mechanical stress without failure.

Specification Summary & Compliance

This rounded truss head screw features precise Class 2A thread fit with 3/8"-16 UNC coarse threading and full threading along the 3/4" length. Manufactured to ASME B18.6.3 specifications for dimensional accuracy and performance reliability. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in various industrial applications while meeting international quality standards.