S-91771A953 8-32 x 7/8" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for heavy-duty load-bearing applications.
• Precise and reliable fastening thanks to Class 2A thread fit and UNC coarse threading, providing secure installation and vibration resistance.
• Efficient installation and flush finish with Phillips No. 2 drive and standard 100° countersink angle, enabling quick assembly and a smooth surface profile.
• Full threading for maximum grip across the entire 7/8" length, ensuring uniform stress distribution and enhanced holding power.
• Compliance with major industry standards including ASME B18.6.3, guaranteeing dimensional accuracy and interchangeability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for safe usage.

Professional Applications & Engineering Value

Engineered for demanding industrial environments, this 8-32 UNC flat head screw delivers critical performance advantages in machinery assembly, electronic enclosures, and structural frameworks. The passivated 18-8 stainless steel provides excellent resistance to oxidation and chemical exposure, significantly extending service life in moist or corrosive settings. Its coarse UNC threading and Class 2A thread fit ensure rapid installation with minimal cross-threading risk, while the fully threaded design maximizes engagement in tapped holes or nuts. The Phillips No. 2 drive and 100° countersink angle allow for secure, flush mounting in pre-drilled surfaces, reducing protrusion and improving safety. Ideal for OEM and MRO applications, this screw addresses common challenges like vibration loosening, material degradation, and regulatory compliance, making it a trusted industrial fastener for engineers and procurement specialists.

Specification Summary & Compliance

This screw maintains Class 2A thread fit per UNC standards, ensuring precise dimensional tolerances for consistent performance. It is manufactured in accordance with ASME B18.6.3 specifications, confirming adherence to recognized engineering and safety guidelines. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally conscious procurement and usage in global markets.