S-90086A674 8-32 x 1 1/4" ASME B18.6.3, SAE J933 Tapping Screws
Tapping Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior thread cutting performance in aluminum, brass, cast iron, and sheet metal without pre-tapped holes, reducing installation time and labor costs
- Enhanced corrosion resistance with black-oxide steel construction, providing durable protection in demanding industrial environments
- Secure fastening with coarse UNC threads offering excellent grip and vibration resistance in softer materials
- Efficient installation with No. 2 Phillips drive and standard flat head design for flush mounting and easy driver engagement
- Optimized for 82° countersink angles ensuring clean, professional finishes in prepared holes
- Full threading along the 1 1/4" length delivers maximum thread engagement and holding power throughout the material thickness
- Reliable compliance with ASME B18.6.3 specifications and RoHS 3 standards for consistent quality and environmental safety
Professional Applications & Engineering Value
These 8-32 UNC thread cutting tapping screws are engineered to solve common industrial fastening challenges in materials like aluminum, brass, cast iron, and sheet metal. The thread cutting design (Type F) eliminates the need for separate tapping operations, significantly reducing assembly time and tooling requirements. Made from black-oxide steel, they resist corrosion in humid or mildly corrosive environments, extending service life in HVAC, machinery, and metal fabrication applications. The coarse thread pitch ensures strong holding power in softer metals, while the Phillips flat head allows for flush installations where protrusions are unacceptable. With a specified No. 26 drill bit size (0.147"), they provide precise hole preparation for reliable, stripped-thread-free installations.
Specification Summary & Compliance
This screw features 8-32 UNC coarse threads with standard Class 2A tolerance for consistent fit. It is fully threaded with a 1 1/4" length, 0.312" head diameter, and 82° countersink angle. Manufactured to meet ASME B18.6.3 specifications (SAE J933) for dimensional accuracy and performance. Compliant with RoHS 3 (2015/863/EU) regulations, ensuring no restricted hazardous substances are used.
