S-8077A383 10-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Enhanced durability and wear resistance from the black oxide finish, providing long-lasting performance and reduced maintenance
• Precise alignment and secure positioning with a Class 3A thread fit and 1/4" shoulder length, minimizing assembly errors and vibration loosening
• High mechanical strength under load offering 70,000 psi tensile and 35,000 psi shear strength for demanding applications
• Easy installation and removal with a hex socket drive and knurled head, allowing for efficient tool engagement and reduced slippage
• Reliable fine thread engagement using 10-32 UNF threads for secure fastening in precision assemblies
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and industrial equipment. The black oxide finish not only enhances corrosion resistance but also reduces galling in high-friction applications. With a Class 3A thread fit and fine UNF threading, it ensures tight tolerances and reliable performance in assemblies requiring exact alignment, such as pivots, guides, and rotating components. The knurled head and hex drive facilitate quick, secure installation, reducing downtime in production environments. Ideal for use in aerospace, medical devices, and automotive sectors, this screw provides consistent shoulder length and diameter control, preventing misalignment and improving overall system longevity.

Specification Summary & Compliance

This shoulder screw features a 10-32 UNF thread with Class 3A fit for high precision, a shoulder diameter of 1/4" with tolerance of -0.004" to -0.002", and shoulder length of 2 1/4" with tolerance of -0.005" to 0.005". It meets ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial reliability.