S-8077A413 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 under demanding conditions
• Precise alignment and secure positioning with a 1/4" shoulder diameter and 11/16" shoulder length, ensuring stable component mounting
• High-strength performance offering 70,000 psi tensile strength and 35,000 psi shear strength for reliable load-bearing applications
• Fine thread accuracy with Class 3A fit for secure, vibration-resistant fastening in precision assemblies
• Easy installation and removal using a standard hex drive (1/8"), compatible with common tools for efficient maintenance
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence

Professional Applications & Engineering Value

This 10-32 UNF thread shoulder screw in 316 stainless steel with a black oxide finish is engineered to address critical industrial challenges, such as corrosion in marine, chemical processing, and outdoor equipment. The fine thread design and Class 3A fit provide exceptional vibration resistance, preventing loosening in high-stress machinery like robotics, conveyor systems, and precision instruments. The socket head with hex drive allows for tight spaces and secure torque application, while the shoulder feature ensures accurate alignment of moving parts, reducing wear and maintenance downtime. Ideal for industrial fasteners requiring reliability, this screw supports applications where corrosion resistance and mechanical stability are paramount.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 specifications, with precise dimensions including a thread size of 10-32 UNF, Class 3A thread fit for tight tolerances, and shoulder diameter and length held to strict tolerances (e.g., shoulder diameter: -0.004" to -0.002"). It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and material integrity. The Rockwell B79 hardness and mechanical properties like 70,000 psi tensile strength confirm its suitability for high-performance industrial use.