S-90086A677 10-24 x 1 1/4" ASME B18.6.3, SAE J933 Tapping Screws

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 from the black-oxide steel finish, providing durability in various industrial environments.
• Maximum holding power and vibration resistance due to the fully threaded UNC coarse thread design, ensuring secure long-term fastening.
• Efficient and secure driving with the Phillips No. 2 drive and standard flat head, allowing for flush mounting and easy installation with common tools.
• Reliable dimensional consistency with a 1 1/4" length and No. 10 screw size, ensuring precise fit and interchangeability in assemblies.
• Compliance with industry standards including ASME B18.6.3, guaranteeing quality and performance for critical engineering applications.
• Environmental and safety adherence with RoHS 3 compliance, making them suitable for regulated industries and sustainable procurement.

Professional Applications & Engineering Value

These 10-24 UNC coarse thread tapping screws are engineered to address common challenges in metalworking and assembly, such as material fatigue and installation inefficiency. Made from durable black-oxide steel, they resist rust and wear, extending service life in demanding conditions like automotive, machinery, and construction. The thread cutting design (Type F) and coarse UNC threads enable quick, self-tapping installation in aluminum, brass, cast iron, and sheet metal, eliminating the need for separate tapping operations and reducing production downtime. With a flat head profile and Phillips drive, they ensure a secure, flush fit that minimizes protrusion and improves aesthetics in finished products. Ideal for high-vibration environments, these screws provide reliable fastening that maintains integrity under stress, supporting efficient B2B supply chains and industrial workflows.

Specification Summary & Compliance

These screws feature precise dimensions, including a thread size of 10-24 UNC with coarse spacing, a length of 1 1/4", and a head diameter of 0.362", adhering to standard tolerances for consistent performance. They comply with ASME B18.6.3 specifications and are RoHS 3 (2015/863/EU) compliant, ensuring they meet rigorous industrial and environmental standards. Designed for use with a No. 17 drill bit (0.173" diameter) and an 82° countersink angle, they facilitate accurate installation in various metal substrates.