S-97768A356 5/16"-18 ASME B18.3 Shoulder Screws
Shoulder Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments
- High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance under stress
- Precise alignment and smooth rotation due to the knurled head and standard shoulder fit, reducing assembly time
- Easy installation and removal with hex socket drive and coarse UNC threading, minimizing tool slippage
- Consistent thread engagement ensured by Class 3A fit, providing vibration resistance in dynamic applications
- Durable wear resistance from Rockwell B55 hardness, extending service life in repetitive use scenarios
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for safe, regulated use
Professional Applications & Engineering Value
This black oxide stainless steel shoulder screw is engineered to address common industrial challenges like misalignment and component wear. The 18-8 stainless steel material, combined with a black oxide finish, offers excellent corrosion resistance, making it suitable for machinery, automotive assemblies, and electronic enclosures exposed to moisture. The UNC coarse thread and Class 3A fit ensure secure fastening in high-vibration environments, while the knurled head and hex drive facilitate quick adjustments without compromising grip. Ideal for precision applications such as pivots, shafts, and guides, this screw reduces maintenance downtime and enhances operational reliability in industrial shoulder screw setups.
Specification Summary & Compliance
This shoulder screw features a 5/16"-18 UNC thread with Class 3A fit for precise dimensional accuracy, and a shoulder diameter tolerance of -0.004" to -0.002" for consistent performance. It meets ASME B18.3 specifications, ensuring adherence to manufacturing standards, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety.
