S-90086A678 10-32 x 3/4" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Self-tapping design eliminates the need for pre-tapped holes, reducing installation time and labor costs in materials like aluminum, brass, and cast iron.
• Black-oxide steel construction provides enhanced corrosion resistance, ensuring longer service life in demanding industrial environments.
• Full threading (Type F) delivers maximum grip and holding power across the entire screw length, preventing loosening under vibration.
• 82° countersink flat head sits flush with surfaces for a clean finish and improved aerodynamics in sheet metal assemblies.
• Phillips No. 2 drive offers widespread tool compatibility and efficient torque transfer, minimizing cam-out during installation.
• Precision UNF fine threads ensure tight, secure fastening with superior resistance to stripping in high-stress applications.
• Compliance with ASME B18.6.3 and RoHS 3 guarantees consistent quality, safety, and environmental standards for global supply chain integration.

Professional Applications & Engineering Value

These 10-32 UNF thread cutting screws are engineered to address common challenges in metalworking and assembly, such as material fatigue and installation efficiency. The Black-Oxide Steel material, combined with a thread cutting (Type F) design, allows for direct installation into aluminum, brass, cast iron, and sheet metal without pre-threading, reducing production steps and potential thread damage. The flat head with an 82° countersink ensures a seamless fit that minimizes protrusion and stress concentration points. By utilizing a No. 16 drill bit (0.177" diameter) as specified, engineers achieve precise hole alignment and optimal thread engagement, enhancing joint integrity in heavy-duty industrial fasteners for machinery, automotive, and construction applications.

Specification Summary & Compliance

This product adheres to UNF fine thread standards with a size of 10-32 and Class 2A tolerance for consistent fit. It is manufactured in compliance with ASME B18.6.3 specifications (referencing SAE J933) for dimensional accuracy and performance. The screws are fully threaded with a blunt tip and right-hand direction, and they meet RoHS 3 (2015/863/EU) environmental regulations, ensuring they are free from hazardous substances for safe use in various industries.