S-91775A517 Length 5/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide Steel finish, extending service life in demanding industrial environments.
• Efficient thread forming design (Type A/AB) creates strong, permanent threads in sheet metal without pre-tapping, reducing assembly time.
• Optimized oval head with 82° countersink angle ensures a flush, professional finish that minimizes snagging and improves safety.
• Full threading and pointed tip enable faster starts and consistent penetration, enhancing installation speed and reliability.
• No. 1 Phillips drive provides secure tool engagement, reducing cam-out and driver slippage during high-torque applications.
• Precision-engineered for 0.025" maximum drilling thickness, delivering reliable performance in standard sheet metal gauges.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and global market acceptability for your products.

Professional Applications & Engineering Value

These Black-Oxide Steel oval head Phillips tapping screws are specifically engineered for sheet metal applications, where vibration resistance and material integrity are critical. The thread forming (Type A/AB) design displaces material rather than cutting it, resulting in stronger thread engagement and reduced risk of loosening under dynamic loads. The fully threaded shank and pointed tip allow for quick, precise starts, minimizing alignment issues and speeding up high-volume assembly lines. The 82° countersink angle and standard oval head profile ensure a smooth, flush finish that meets aesthetic and functional requirements in enclosures, HVAC systems, and electronic chassis. Combined with the corrosion-resistant Black-Oxide coating, these screws provide long-term durability in environments exposed to moisture and wear.

Specification Summary & Compliance

This product adheres to standard inch measurements with a No. 4-24 thread size and 5/8" length, designed for use with a No. 44 drill bit (0.086" diameter). The thread forming tapping method and right-hand threading follow industry-accepted practices for sheet metal fastening. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring the absence of restricted hazardous substances and supporting sustainable manufacturing practices.