S-90920A276 8-32 x 1/4" ASME B18.6.3 Alloy Steel Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Enhanced torque transmission through T15 Torx drive system, reducing cam-out and tool slippage
• Reliable flush mounting with 82° countersink angle and undercut flat head design for clean, professional finishes
• Optimized thread engagement with Class 2A UNC coarse threads ensuring secure fastening in various materials
• Maximum load distribution through fully threaded 1/4" length design and 60,000 psi tensile strength
• Simplified installation with right-hand threading following industry-standard directional conventions
• Regulatory compliance assurance meeting ASME B18.6.3 specifications for consistent quality and performance

Professional Applications & Engineering Value

These 8-32 UNC zinc-plated steel flat head screws deliver exceptional engineering value in industrial fastening applications where corrosion resistance and reliable performance are critical. The T15 Torx drive system provides superior torque transfer compared to traditional drive types, minimizing strip-out incidents in high-torque assembly environments. The undercut flat head profile with 82° countersink angle ensures proper seating in precision-machined countersinks, eliminating protrusion issues in aerospace, automotive, and machinery applications. The coarse thread design offers excellent holding power in softer materials while the zinc plating provides sacrificial protection against environmental factors, making these screws ideal for outdoor equipment, electrical enclosures, and manufacturing fixtures requiring durable, long-term fastening solutions.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit tolerances ensuring consistent performance and interchangeability. These UNC coarse thread screws feature precise dimensional control with 8-32 thread size, 1/4" length, and 0.312" head diameter. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees safe use across global markets. The manufacturing process adheres to strict quality controls, delivering reliable 60,000 psi tensile strength performance for industrial applications requiring certified components.