S-91255A203 8-32 x 1 1/2" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating, ideal for harsh industrial environments
• High tensile strength of 120,000 psi ensures reliable performance under heavy loads
• Precision Class 3A thread fit guarantees secure fastening and vibration resistance
• Fully threaded UNC coarse spacing provides faster installation and superior holding power
• Low-profile button head design offers a flush finish while maintaining high torque capability
• 3/32" hex drive compatibility enables easy installation with standard tools
• Rockwell C39 hardness rating delivers excellent wear resistance and long service life

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these black-oxide alloy steel button head screws combine superior material properties with precision manufacturing. The UNC coarse thread spacing and Class 3A thread fit ensure rapid assembly while maintaining vibration resistance in machinery, automotive, and heavy equipment applications. The fully threaded design provides maximum engagement strength, while the rounded head profile eliminates snagging points in confined spaces. Ideal for applications requiring high tensile strength and corrosion protection, these screws deliver reliable performance in assembly lines, metal fabrication, and structural components where precision fastening is critical.

Specification Summary & Compliance

Manufactured to exacting standards with Class 3A thread tolerance for precision fit. Complies with ASME B18.3 and ASTM F835 specifications for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features UNC coarse thread with right-hand threading and full thread length of 1-1/2".