S-94361A375 1/2"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Precision Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in dynamic environments.
• Black oxide finish offers enhanced corrosion resistance and a durable, non-reflective surface for extended service life.
• Knurled socket head with 5/16" hex drive allows for secure tool grip and easy installation in confined spaces.
• Accurate shoulder dimensions (5/8" diameter, 1-3/8" length) with tight tolerances ensure precise alignment and smooth rotational movement.
• Alloy steel construction with Rockwell C32 hardness delivers excellent wear resistance and durability under heavy loads.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and suitability for global industrial markets.

Professional Applications & Engineering Value

This alloy steel shoulder screw is engineered to address critical alignment and rotational requirements in demanding industrial settings. The 1/2"-20 UNF fine thread with Class 3A fit ensures secure fastening in applications prone to vibration, such as machinery assemblies, automotive components, and precision equipment. The black oxide finish not only resists corrosion but also reduces galling, extending the fastener's lifespan in harsh environments. The knurled socket head with hex drive facilitates quick installation and removal, while the precisely machined shoulder provides stable bearing surfaces for gears, pulleys, and linkages. Ideal for industrial applications requiring high strength and dimensional accuracy, this shoulder screw minimizes maintenance downtime and enhances operational reliability.

Specification Summary & Compliance

This shoulder screw features a 1/2"-20 UNF fine thread with Class 3A tolerance for precise fit, and shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005" for consistent performance. Manufactured from alloy steel with Rockwell C32 hardness and 140,000 psi tensile strength, it complies with RoHS 3 (2015/863/EU) under exemption 6(a) and REACH (EC 1907/2006) standards, ensuring adherence to environmental and safety regulations.