S-90086A672 8-32 x 3/4" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior Material Strength: Black-oxide steel construction provides excellent corrosion resistance and durability for long-lasting performance in demanding industrial environments.
• Efficient Self-Tapping Design: Thread cutting (Type F) capability eliminates the need for pre-tapped holes, reducing installation time and labor costs in materials like aluminum and cast iron.
• Optimized Drive Performance: No. 2 Phillips drive ensures secure tool engagement and prevents cam-out, delivering reliable torque transmission during installation.
• Precision Countersinking: Standard 82° flat head profile with 0.312" diameter enables flush mounting and smooth surface finishes in sheet metal applications.
• Enhanced Thread Engagement: Coarse UNC threading with full-length coverage provides superior holding power and vibration resistance in soft metals and alloys.
• Simplified Installation Process: Compatible with standard No. 26 drill bits (0.147" diameter), ensuring perfect pilot hole sizing for optimal thread formation.
• Industry Compliance Assurance: Meets ASME B18.6.3 specifications and RoHS 3 compliance for guaranteed quality and environmental safety standards.

Professional Applications & Engineering Value

These 8-32 UNC thread cutting tapping screws deliver exceptional engineering value by solving critical fastening challenges in aluminum, brass, cast iron, and sheet metal applications. The black-oxide steel construction combined with thread cutting (Type F) design eliminates the need for separate tapping operations, significantly reducing assembly time and production costs. The coarse UNC threading ensures maximum thread engagement in softer materials, preventing stripping and maintaining joint integrity under vibration. The flat head profile with 82° countersink provides seamless surface finishing while the fully threaded blunt tip design allows for consistent penetration depth control. These Phillips drive screws are engineered to withstand industrial stresses while maintaining ASME B18.6.3 compliance for reliable performance in automotive, machinery, and metal fabrication applications.

Specification Summary & Compliance

These thread cutting tapping screws feature precise 8-32 UNC coarse thread specifications with standard Class 2A tolerance for consistent fit. The manufacturing process adheres to ASME B18.6.3 mechanical and dimensional requirements SAE J933, ensuring interchangeability and reliability. The products are fully RoHS 3 (2015/863/EU) Compliant for environmental safety and meet all specified dimensional parameters including 0.312" head diameter, 3/4" length, and standard flat head profile. The threading is optimized for thread cutting applications in specified materials with recommended No. 26 drill bit compatibility for proper installation.