S-94035A117 2-56 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under load
• Precise alignment and spacing enabled by the 1/4" shoulder length with tight diameter and length tolerances
• Easy installation and removal using a standard 5/64" hex drive socket head for secure, tool-friendly fastening
• Wide compatibility with 2-56 UNC coarse right-hand threads and Class 2A fit for consistent mating with standard components
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe use in regulated industries
• Smooth, low-friction surface from the smooth head texture and passivation, reducing wear during assembly and operation

Professional Applications & Engineering Value

This precision shoulder screw is engineered with 18-8 stainless steel and a passivated finish to combat corrosion in demanding settings like machinery, automation, and electronic assemblies. The UNC coarse thread and Class 2A fit ensure quick, reliable fastening, while the precisely machined shoulder (1/4" length, 3/32" diameter) provides stable alignment for rotating parts, bearings, or linkages—eliminating misalignment and reducing maintenance. With a socket head design and hex drive, it supports efficient installation in confined spaces, making it a go-to for industrial and mechanical applications where durability and accuracy are critical.

Specification Summary & Compliance

The screw adheres to UNC thread standards with a Class 2A thread fit for dimensional accuracy, and shoulder dimensions include a diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002" for precise assembly. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free of hazardous substances for safe industrial use.