S-90086A665 6-32 x 3/8" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior Thread Cutting Performance – Self-tapping F-type design creates precise threads in aluminum, brass, cast iron, and sheet metal without pre-threading, reducing assembly time and labor costs.
• Enhanced Corrosion Resistance – Black-Oxide Steel finish provides durable protection against rust and wear in demanding industrial environments, extending service life.
• Optimized Drive Engagement – Phillips No. 2 drive ensures secure torque transmission and minimizes cam-out, improving installation reliability and reducing tool slippage.
• Full Thread Engagement – Fully threaded UNC coarse design delivers maximum grip and pull-out resistance across the entire fastener length for stable, vibration-resistant connections.
• Standardized Countersinking – Flat head with 82° angle allows flush mounting in pre-drilled holes (No. 31 drill bit, 0.12" diameter), ensuring smooth surface finishes and eliminating protrusions.
• Broad Material Compatibility – Engineered for use in diverse metals including aluminum, brass, cast iron, and sheet metal, offering versatile fastening solutions for multi-material assemblies.
• Regulatory Compliance Assurance – Meets ASME B18.6.3 specifications and RoHS 3 standards, guaranteeing consistent quality, safety, and environmental responsibility in industrial applications.

Professional Applications & Engineering Value

These 6-32 UNC thread cutting screws address critical challenges in metal fabrication and assembly by combining Black-Oxide Steel durability with precision thread cutting capability. The coarse UNC thread and fully threaded design enable rapid installation in soft metals like aluminum and brass, while the flat head Phillips drive ensures countersunk, flush-mount finishes that prevent snagging in machinery or enclosures. Ideal for sheet metal joints, cast iron components, and electrical enclosures, these screws eliminate the need for separate tapping operations, reducing production steps and minimizing thread stripping risks. Their compliance with ASME B18.6.3 ensures dimensional accuracy and reliable performance in high-vibration environments, making them a trusted choice for OEMs and maintenance teams seeking efficiency in industrial fastening applications.

Specification Summary & Compliance

This screw adheres to UNC coarse thread standards with a 6-32 thread size and Class 2A fit for consistent engagement. Manufacturing follows ASME B18.6.3 dimensional requirements, including 0.262" head diameter, 3/8" length, and 82° countersink angle compatibility. The product is RoHS 3 (2015/863/EU) Compliant, ensuring no restricted hazardous substances, and meets SAE J933 specifications for material and performance reliability in industrial use.