S-91255A140 6-32 x 1/8" ASME B18.3 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating, ideal for harsh industrial environments
• Superior tensile strength (120,000 psi) ensures reliable performance under high-stress applications
• Precise Class 3A thread fit provides secure, vibration-resistant fastening with minimal play
• Compact 5/64" hex drive design enables easy installation in confined spaces with standard tools
• Fully threaded construction delivers maximum grip length and uniform load distribution
• Rounded button head profile reduces surface damage risks while maintaining low-profile appearance
• Compliance with major industry standards guarantees consistent quality and regulatory acceptance

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 6-32 UNC thread screws combine black-oxide alloy steel construction with precision Class 3A thread fit to solve critical fastening challenges. The coarse thread spacing ensures rapid installation in various materials while maintaining superior pull-out resistance. With 120,000 psi tensile strength and Rockwell C39 hardness, these fully threaded screws withstand extreme mechanical stresses in electronics assembly, machinery manufacturing, and automotive components. The rounded head design with hex drive prevents cam-out issues during high-torque applications, making them ideal for production lines where reliability and speed are paramount.

Specification Summary & Compliance

Manufactured to exacting Class 3A thread tolerance with UNC coarse thread spacing and right-hand threading. Complies with ASME B18.3 dimensional specifications and ASTM F835 mechanical properties. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) requirements for hazardous substance restrictions.