S-8077A378 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 including marine and chemical applications
• Enhanced durability and wear resistance from the black oxide finish, providing long-lasting performance and reduced maintenance
• Precise alignment and smooth rotation ensured by the Class 3A thread fit and standard shoulder fit, minimizing assembly errors
• High-strength performance with 70,000 psi tensile strength and 35,000 psi minimum shear strength, supporting heavy-duty industrial loads
• Secure, non-slip fastening thanks to the knurled socket head and 1/8" hex drive, allowing for easy installation with standard tools
• Reliable fine thread engagement with 10-32 UNF right-hand threads, offering excellent vibration resistance in precision assemblies
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, such as misalignment and component wear. The black oxide finish not only enhances corrosion resistance but also reduces friction in high-movement applications like pivots and rotating assemblies. With a 1 1/2" shoulder length and fine 10-32 UNF thread, it provides stable spacing and secure fastening in industrial equipment, automotive systems, and electronic enclosures. The socket head design with knurling ensures reliable torque application, minimizing slippage during installation. Ideal for applications requiring repeated adjustments, this screw delivers consistent performance under varying loads, thanks to its high tensile strength and precise Class 3A thread fit.

Specification Summary & Compliance

This shoulder screw adheres to tight dimensional tolerances, including a Class 3A thread fit for superior accuracy and a shoulder diameter tolerance of -0.004" to -0.002". It conforms to ASME B18.3 specifications for consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use.