S-91255A269 10-32 x 3/4" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with Black-Oxide finish, ideal for harsh industrial environments
• Superior thread engagement and vibration resistance from Class 3A fine UNF threads ensuring reliable, long-term connections
• High tensile strength of 120,000 psi provides dependable performance under significant mechanical stress
• Rockwell C39 hardness offers excellent durability and wear resistance for repeated use
• Full threading along the 3/4" length allows for maximum grip and adjustability in assemblies
• 1/8" hex drive button head design enables easy installation with a low-profile, rounded finish
• Compliance with ASME B18.3 and ASTM F835 guarantees consistent quality and engineering precision

Professional Applications & Engineering Value

These 10-32 UNF Class 3A Black-Oxide Alloy Steel rounded head screws are engineered to address critical industrial fastening challenges, such as vibration loosening and corrosion in demanding applications. The fine thread spacing and Class 3A thread fit ensure tight, secure connections in machinery, electronics, and automotive assemblies, reducing maintenance needs. The Black-Oxide surface treatment on Alloy Steel enhances corrosion resistance without compromising the high tensile strength, making these button head screws ideal for environments where reliability and longevity are paramount. Their fully threaded design and hex drive facilitate quick, stable installations, supporting efficient production workflows.

Specification Summary & Compliance

This screw meets precise dimensional standards with a Class 3A thread fit and UNF fine thread specifications. It adheres to ASME B18.3 and ASTM F835 manufacturing norms, ensuring consistent performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms environmental and safety standards are met for global industrial use.