S-90271A190 8-32 x 1/4" ASME B18.6.3 Steel Truss Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Exceptional holding power with 60,000 psi tensile strength and Rockwell B69 hardness for reliable heavy-duty applications
• Optimized thread engagement through coarse UNC threading and Class 2A fit ensuring secure fastening with reduced cross-threading risk
• Enhanced load distribution from the wide truss head design that provides superior surface contact and prevents material damage
• Universal compatibility with standard slotted drive tools for quick installation and maintenance across various industrial settings
• Full-thread coverage along the 1/4" length for maximum grip strength and versatility in different material thicknesses
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

These 8-32 UNC zinc-plated steel rounded truss head screws deliver exceptional engineering value across industrial assembly applications where vibration resistance and long-term reliability are critical. The combination of coarse thread spacing and Class 2A thread fit ensures rapid installation while maintaining precise tolerances in metal fabrication, machinery assembly, and electrical enclosures. The wide truss head profile distributes clamping force effectively, preventing surface damage to softer materials while the zinc plating provides essential corrosion protection in humid or outdoor environments. Engineered for heavy-duty fastening with 60,000 psi tensile strength, these fully threaded screws maintain integrity under sustained loads, making them ideal for automotive components, industrial equipment maintenance, and construction applications where failure is not an option.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit precision and UNC coarse thread specifications. These inch system screws feature a 1/4" length with full threading and are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The mechanical properties include 60,000 psi tensile strength and Rockwell B69 hardness, ensuring consistent performance across industrial applications while meeting international quality and safety standards.