S-98637A022 2-56 x 1/4" MS51963-3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with cadmium plating that protects against rust and extends service life in harsh industrial environments
• Maximum holding power ensured by Class 3A thread fit precision, providing tighter tolerances and more secure fastening than standard classes
• Exceptional durability from Rockwell C45 hardened alloy steel that resists wear and deformation under high stress
• Easy installation and removal with hex drive design requiring only 0.035" hex key, saving time during assembly and maintenance
• Reliable positioning through cup tip design that creates consistent indentation for permanent component alignment
• Wide compatibility with coarse UNC threads and right-hand direction meeting most industrial equipment requirements
• Verified quality assurance through compliance with MS51963-3 specifications, ensuring consistent performance across applications

Professional Applications & Engineering Value

This 2-56 UNC set screw delivers critical engineering solutions for precision assembly challenges where space constraints demand headless fasteners. The cadmium-plated alloy steel construction provides essential corrosion protection for industrial equipment exposed to moisture, chemicals, or outdoor elements. With Class 3A thread fit precision, manufacturers achieve superior clamping force and vibration resistance in applications from machinery components to electronic enclosures. The hex drive design enables high-torque installation in confined spaces, while the cup tip ensures positive seating on shafts and collars. Meeting MS51963-3 specifications, these set screws provide reliable performance in aerospace, automotive, and manufacturing applications where failure is not an option.

Specification Summary & Compliance

This precision fastener features 2-56 UNC coarse threads with Class 3A thread fit for exceptional dimensional accuracy. The 1/4" length and headless design provide compact fastening solutions. Manufactured from alloy steel with Rockwell C45 hardness and cadmium plating surface treatment. Complies with MS51963-3 specifications and is manufactured to inch system measurement standards for consistent quality and performance in industrial applications.