S-97345A608 5/16"-18 ASME B18.3 Shoulder Screws
Shoulder Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments.
- Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for reliable load-bearing in demanding applications.
- Precise Class 3A thread fit ensures tight, secure fastening with minimal backlash in assemblies.
- Knurled socket head design provides enhanced grip and prevents tool slippage during installation.
- Standardized UNC coarse thread facilitates quick assembly and disassembly, reducing maintenance time.
- Full compliance with ASME B18.3 guarantees dimensional accuracy and interchangeability.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global supply chains.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and corrosive operational environments. The UNC coarse thread and Class 3A fit provide vibration resistance and consistent clamping force, essential for high-cycle applications. The knurled socket head enhances torque transmission, reducing the risk of stripping during repeated use. Its high tensile and shear strength ensures durability under dynamic loads, while the corrosion-resistant material extends service life in chemical processing, marine, and food-grade equipment. The shoulder diameter acts as a precise locating dowel, maintaining alignment in rotating assemblies and reducing wear on mating components.
Specification Summary & Compliance
This shoulder screw features a 5/16"-18 UNC coarse thread with Class 3A fit for precise thread engagement. The shoulder diameter is 3/8" with a tight tolerance of -0.004" to -0.002", and the shoulder length is 7/32" with a tolerance of -0.005" to 0.005". Manufactured in compliance with ASME B18.3 specifications, it also meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring regulatory adherence for industrial and export applications.
