S-93791A523 10-32 x 1" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and black-oxide passivated finish, ideal for harsh industrial environments.
• Precise, reliable thread engagement through Class 3A UNF fine threads, ensuring tight, vibration-resistant connections in critical assemblies.
• High tensile strength of 70,000 psi combined with Rockwell B55 hardness for dependable performance under heavy loads and stress.
• Efficient installation and removal with the hex drive design, providing superior torque transmission and reducing tool slippage.
• Secure, flush mounting thanks to the standard 82° countersink angle and flat head profile, minimizing protrusion in precision applications.
• Full threading along the 1" length for maximum grip and adjustability across a wide range of material thicknesses.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.

Professional Applications & Engineering Value

This 10-32 UNF flat head screw is engineered to address common challenges in industrial fastening, such as corrosion, vibration loosening, and installation efficiency. The 18-8 stainless steel material, enhanced by a black-oxide passivated finish, provides robust resistance to rust and chemicals, making it suitable for outdoor, marine, and chemical processing equipment. The Class 3A thread fit and fine thread spacing ensure precise alignment and reduced risk of stripping in high-vibration environments like machinery and automotive assemblies. With a hex drive and 82° countersink angle, it allows for quick, secure fastening in tight spaces, improving assembly speed and reliability. Ideal for applications requiring flush mounting and high strength, these screws deliver consistent performance in industrial settings where durability and compliance are critical.

Specification Summary & Compliance

This screw features a 10-32 UNF thread size with Class 3A precision tolerance for tight, reliable fits. It is manufactured in accordance with ASME B18.3 standards, ensuring dimensional accuracy and interoperability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for various industrial uses. Key dimensions include a 1" length, fully threaded design, and standard 82° countersink angle, supporting consistent performance in engineered applications.