S-91255A150 6-32 x 5/8" ASME B18.3 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide alloy steel construction, ideal for harsh industrial environments
• Superior holding power from fully threaded UNC coarse spacing design for maximum engagement and vibration resistance
• High-strength performance with 120,000 psi tensile strength and Rockwell C39 hardness for demanding applications
• Precise Class 3A thread fit ensuring reliable, secure fastening with minimal risk of cross-threading
• Easy installation and removal with 5/64" hex drive and rounded button head design for flush, low-profile mounting
• Broad industrial compliance meeting ASME B18.3, ASTM F835, RoHS 3, and REACH standards for quality assurance
• Right-hand thread direction providing standard, intuitive fastening for common assembly processes

Professional Applications & Engineering Value

Engineered for industrial reliability, these 6-32 UNC thread screws with black-oxide alloy steel construction address critical challenges in machinery, electronics, and automotive assemblies. The fully threaded coarse spacing design enhances grip in softer materials and resists loosening under vibration, while the rounded button head and hex drive facilitate quick installation in confined spaces. With 120,000 psi tensile strength and Rockwell C39 hardness, they prevent stripping and deformation in high-stress applications, ensuring long-term performance in corrosive or demanding environments where ASME B18.3 compliance is essential.

Specification Summary & Compliance

This screw features a 6-32 UNC thread with Class 3A thread fit for precise dimensional accuracy, 5/8" length, and coarse thread spacing. Manufactured to ASME B18.3 and ASTM F835 specifications, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and reliable use across global industrial sectors.