S-91255A164 8-32 x 7/16" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional durability and corrosion resistance from Black-Oxide Alloy Steel, ideal for harsh industrial environments.
• Superior tensile strength (120,000 psi) and hardness (Rockwell C39) for reliable performance in high-stress applications.
• Precise Class 3A thread fit ensures secure, vibration-resistant fastening with minimal risk of loosening.
• Coarse UNC threading and fully threaded design provide quick installation and maximum grip in various materials.
• Hex drive (3/32") and rounded button head allow for easy access and a clean, low-profile finish.
• Compliance with ASME B18.3 and ASTM F835 guarantees consistent quality and interchangeability.
• RoHS 3 and REACH compliant for safe use in regulated industries and global markets.

Professional Applications & Engineering Value

These 8-32 UNC hex drive screws are engineered to address common industrial fastening challenges, such as vibration-induced loosening and material fatigue. The Black-Oxide Alloy Steel construction offers enhanced corrosion resistance, extending service life in demanding environments like machinery assembly, automotive components, and electronic enclosures. The coarse thread spacing and Class 3A thread fit provide excellent holding power in both soft and hard materials, reducing the need for frequent maintenance. With a rounded button head and fully threaded design, they ensure easy installation and a secure, flush fit, making them ideal for applications where space is limited and reliability is critical.

Specification Summary & Compliance

This product features precise Class 3A thread fit per UNC standards, with a thread size of 8-32 and a length of 7/16 inch. Manufacturing adheres to ASME B18.3 and ASTM F835 specifications, ensuring dimensional accuracy and performance consistency. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable industrial use.