S-91770A192 8-32 x 3/8" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh environments and extended service life
• Superior holding power with 70,000 psi tensile strength and Rockwell B70 hardness, preventing stripping and deformation under load
• Enhanced stability and reduced head protrusion due to the wide truss head design, distributing clamping force over a larger surface area
• Reliable installation efficiency with Phillips No. 2 drive and fully threaded coarse UNC spacing, enabling quick assembly and reduced cam-out
• Precise thread engagement with Class 2A fit, ensuring consistent performance and vibration resistance in industrial applications
• Broad regulatory compliance meeting ASME B18.6.3, RoHS 3, and REACH standards, guaranteeing safety and environmental responsibility
• Versatile 3/8" length and fully threaded design providing flexibility for various material thicknesses and secure fastening

Professional Applications & Engineering Value

These 8-32 UNC rounded truss head screws deliver critical engineering solutions where vibration resistance, corrosion protection, and reliable clamping force are paramount. The passivated 18-8 stainless steel material inherently resists oxidation and chemical exposure, making these fasteners ideal for outdoor equipment, marine hardware, food processing machinery, and electronic enclosures. The combination of coarse thread spacing and Class 2A thread fit ensures rapid installation and maintains tightness in materials prone to thermal expansion or stress. The wide truss head design minimizes the risk of surface damage and provides a larger bearing area, which is essential for securing softer materials or composite panels without sinking. Engineered to meet ASME B18.6.3 specifications, these screws offer predictable performance and interchangeability, reducing assembly errors and maintenance needs in high-volume production environments.

Specification Summary & Compliance

This product features precise UNC coarse threads with Class 2A fit, ensuring dimensional accuracy and reliable engagement. Manufacturing adheres to ASME B18.6.3 standards for consistency and performance. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming they are free of hazardous substances and safe for various industrial and consumer applications.