S-90087A837 2-56 x 1/8" 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 assembly steps and labor costs
• Enhanced corrosion resistance with zinc-plated steel construction, ensuring long-term reliability in demanding industrial environments
• Optimized drive engagement through Phillips No. 1 drive style, providing secure torque transmission and reducing cam-out risks
• Full-length threading maximizes grip strength and load distribution across the entire fastener length
• Standardized coarse UNC threading enables quick installation and high pull-out resistance in various metal substrates
• Compatibility with No. 48 drill bits (0.076" diameter) simplifies hole preparation and ensures proper thread engagement
• Industry-standard compliance with ASME B18.6.3 and SAE J933 specifications guarantees consistent quality and interchangeability

Professional Applications & Engineering Value

These 2-56 UNC zinc-plated steel tapping screws deliver exceptional engineering value in metal fabrication and assembly operations. The Type F thread cutting design with coarse spacing creates precise mating threads in aluminum, brass, cast iron, and sheet metal applications, eliminating the need for separate tapping operations. The zinc-plated steel construction provides essential corrosion protection while maintaining the high tensile strength required for durable fastening in industrial equipment, electrical enclosures, and automotive components. The combination of Phillips No. 1 drive and pan head profile ensures reliable installation with standard driving tools, while the blunt tip and fully threaded design prevent material displacement and ensure maximum thread engagement. These features collectively address critical industrial pain points including reduced assembly time, improved joint integrity, and long-term fastener reliability in challenging environments.

Specification Summary & Compliance

These tapping screws feature 2-56 UNC coarse threads with standard Class 2A tolerance, ensuring precise fit and reliable performance. The manufacturing process strictly adheres to ASME B18.6.3 and SAE J933 specifications, guaranteeing dimensional accuracy and mechanical properties. The zinc-plated finish provides corrosion resistance while maintaining compliance with industry standards for metal fasteners. All materials and processes meet relevant industrial requirements for consistent quality and performance in professional applications.