S-90086A612 6-32 x 7/8" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• Effortless installation through Type F thread-cutting design that eliminates pre-tapping in aluminum, brass, cast iron, and sheet metal
• Secure fastening with reduced cam-out thanks to Phillips No. 2 drive design for consistent torque application
• Flush surface finish enabled by standard 82° flat head profile that sits seamlessly in countersunk applications
• Reliable coarse UNC threading providing excellent pull-out resistance in softer materials
• Full 7/8" thread engagement ensuring maximum holding power across material thicknesses
• Industry-standard compliance with ASME B18.6.3/SAE J933 specifications for guaranteed performance and interchangeability

Professional Applications & Engineering Value

These 6-32 UNC zinc-plated steel tapping screws deliver exceptional value in metal fabrication and assembly operations. The thread-cutting Type F design eliminates the need for separate tapping operations, significantly reducing installation time and labor costs in aluminum, brass, cast iron, and sheet metal applications. The zinc-plated finish provides essential corrosion protection for components exposed to industrial atmospheres, while the Phillips No. 2 drive ensures reliable torque transfer without specialized tools. With coarse UNC threading and full 7/8" engagement, these screws maintain secure fastening in materials prone to vibration and thermal cycling, making them ideal for HVAC systems, electrical enclosures, machinery guards, and automotive assemblies where durable thread-forming capability is critical.

Specification Summary & Compliance

These tapping screws feature precision 6-32 UNC coarse threads with Class 2A tolerance, Type F thread-cutting design compatible with No. 31 drill bit (0.12" diameter), and standard 82° countersink angle. Manufactured to ASME B18.6.3 and SAE J933 specifications, they ensure dimensional consistency and mechanical performance. The zinc-plated steel construction meets industry standards for corrosion resistance, while compliance with RoHS and REACH regulations guarantees environmental responsibility in industrial supply chains.