S-8077A376 10-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and extended service life.
• Enhanced durability and wear resistance from the Black Oxide finish, providing a protective layer against abrasion.
• High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength for reliable load-bearing in demanding applications.
• Precise thread engagement with a Class 3A UNF fine thread fit, ensuring secure fastening and vibration resistance.
• Secure and easy installation featuring a knurled socket head with a 1/8" hex drive for improved grip and torque application.
• Accurate component alignment due to the standardized shoulder diameter and length, minimizing assembly errors.
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, guaranteeing quality and environmental safety.

Professional Applications & Engineering Value

This 10-32 UNF thread shoulder screw is engineered to address critical challenges in precision assemblies, such as in machinery, automotive, and electronics. The 316 Stainless Steel material offers exceptional resistance to corrosion from chemicals and moisture, reducing maintenance needs in industrial settings. Combined with the Black Oxide finish, it enhances surface hardness and minimizes galling during installation. The Class 3A thread fit and fine UNF threads provide tight tolerances, preventing loosening under vibration and ensuring consistent performance in dynamic applications. The knurled socket head allows for efficient torque transfer, speeding up assembly while maintaining alignment accuracy with its precisely machined shoulder. Ideal for pivots, spacers, and rotating components, this screw delivers reliable engineering value by improving assembly integrity and longevity.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for high precision, with a 10-32 UNF fine thread and right-hand direction. Dimensions include a shoulder diameter of 1/4" (tolerance: -0.004" to -0.002") and shoulder length of 9/32" (tolerance: -0.005" to 0.005"). It meets ASME B18.3 specifications for dimensional consistency and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability.