S-97345A622 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 316 stainless steel construction, ideal for harsh environments and washdown applications.
- Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high stress.
- Precise alignment and pivot function provided by the 3/4" shoulder with tight diameter tolerance for reduced assembly play.
- Secure and efficient installation enabled by the hex socket drive and knurled head, preventing tool slippage.
- High-reliability thread engagement from the Class 3A fit UNC coarse thread, ensuring vibration resistance and easy assembly.
- Long-term durability backed by Rockwell B79 hardness, maintaining integrity through repeated use.
- Regulatory and standards compliance including ASME B18.3, RoHS 3, and REACH for global quality and safety assurance.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to solve critical challenges in precision machinery, automation systems, and corrosive industrial environments. The 5/16"-18 UNC coarse thread with Class 3A fit provides superior vibration resistance and quick assembly, reducing downtime. The 3/4" shoulder length and controlled diameter tolerance offer an exact locating surface for bearings, gears, or linkages, minimizing misalignment and wear. With a hex socket drive and knurled head, installation is secure and efficient, even in confined spaces. Its high tensile and shear strength ensures reliable performance in dynamic loads, making it a vital industrial fastener for demanding applications.
Specification Summary & Compliance
This shoulder screw features a Class 3A thread fit for precise engagement, manufactured to ASME B18.3 standards. The shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring high dimensional accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for restricted substance-sensitive applications.
