S-93985A517 4-40 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability: Crafted from 416 Stainless Steel with a Rockwell C26 hardness, offering excellent resistance to wear and corrosion in demanding industrial environments.
• Superior Tensile Strength: With a tensile strength of 120,000 psi, this screw provides reliable performance under high-stress conditions, reducing the risk of failure.
• Precise Shoulder Fit: Features a 1/8" shoulder diameter with tight tolerances (-0.001" to 0"), ensuring accurate alignment and smooth rotation in assemblies.
• Easy Installation and Removal: Equipped with a 5/64" hex socket head for secure driving with standard tools, minimizing slippage and speeding up assembly processes.
• Wide Compatibility: Utilizes 4-40 UNC coarse threads with a Class 2A fit, facilitating quick assembly and reliable holding power in various materials.
• Regulatory Compliance: Compliant with RoHS 3 and REACH standards, making it safe for use in regulated industries and environmentally conscious applications.
• Versatile Right-Hand Thread: The right-hand thread direction allows for straightforward installation in standard applications, improving efficiency on the production line.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address common industrial challenges such as misalignment and component wear. Made from 416 Stainless Steel, it offers robust corrosion resistance and durability, ideal for machinery, electronics, and automotive assemblies where precise positioning is critical. The 1/8" shoulder diameter with minimal tolerances ensures exact fitment, reducing vibration and extending the lifespan of connected parts. Paired with a hex socket head and 4-40 UNC coarse threads, it enables quick, secure fastening in high-volume production environments, streamlining maintenance and enhancing overall engineering value by minimizing downtime and replacement costs.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit for consistent engagement and features a shoulder diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002" for high precision. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.