S-91099A340 10-32 x 5/16" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance from passivated 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
- Exceptional tensile strength rated at 80,000 psi, providing reliable fastening integrity under high-stress conditions.
- Precision Class 2A thread fit ensures smooth installation and consistent engagement with mating components.
- Optimized flush mounting with 82° countersink angle and undercut flat head design for clean, secure seating in tapered holes.
- Enhanced drive stability with No. 2 Phillips drive, reducing cam-out risks during high-torque assembly.
- Full threading along the 5/16" length maximizes grip range and load distribution across the entire fastener.
- Compliance with major industry standards including ASME B18.6.3, RoHS 3, and REACH for guaranteed quality and environmental safety.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 10-32 UNF flat head screws solve critical challenges in machinery assembly, electronic enclosures, and precision equipment. The passivated 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, extending service life in humid or corrosive settings. The fine UNF thread and Class 2A fit deliver vibration-resistant, secure fastening in thin materials and tight-tolerance components, while the flat head with undercut ensures a flush finish that prevents snagging and improves aerodynamic or aesthetic profiles. These screws are ideal for OEMs and maintenance teams requiring reliable, RoHS and REACH compliant fasteners that meet rigorous ASME B18.6.3 specifications.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit per UNF standards, ensuring precise dimensional accuracy and interchangeability. Manufacturing follows ASME B18.6.3 specifications for flat head machine screws, with a consistent 82° countersink angle and full threading. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of restricted hazardous substances and safe for industrial use across global markets.
