S-91255A010 0-80 x 1/8" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating for reliable performance in demanding industrial environments
• Superior thread precision with Class 3A fit ensures secure fastening and vibration resistance in critical assemblies
• High tensile strength of 120,000 psi provides reliable load-bearing capacity for demanding mechanical applications
• Hex drive design with 0.035" drive size offers secure tool engagement and prevents stripping during installation
• Rockwell C39 hardness rating maintains structural integrity under repeated stress and torque applications
• Comprehensive regulatory compliance meets ASME B18.3, ASTM F835, RoHS 3, and REACH standards for global market acceptance
• Fine UNF threading (0-80) delivers superior holding power in thin materials and precision assemblies

Professional Applications & Engineering Value

These 0-80 UNF rounded head screws with hex drive configuration are engineered to address critical fastening challenges in precision industries. The black-oxide alloy steel construction provides essential corrosion protection while maintaining the material's inherent strength characteristics. The fine thread configuration and Class 3A thread fit ensure maximum thread engagement in thin-section materials commonly found in electronics, aerospace components, and precision instrumentation. The rounded button head profile offers a low-profile solution that minimizes protrusion while providing adequate bearing surface. These fully threaded screws deliver consistent performance in applications requiring vibration resistance, thermal cycling stability, and repeated assembly/disassembly cycles, making them ideal for maintenance-critical industrial equipment and precision manufacturing applications.

Specification Summary & Compliance

This precision 0-80 UNF screw features exact dimensional compliance with Class 3A thread fit tolerances, ensuring superior threading accuracy. Manufacturing adheres to ASME B18.3 and ASTM F835 specifications for dimensional consistency and mechanical properties. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming suitability for global industrial markets. With fully threaded design and precise UNF fine threading, these screws deliver reliable performance in applications demanding exacting dimensional standards and regulatory conformity.