S-97345A224 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 industrial and marine environments.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high stress.
- Precision Class 3A thread fit ensures tight, secure fastening with minimal backlash in critical assemblies.
- Easy installation and removal with a 3/16" hex socket drive and knurled head for improved grip and torque application.
- Accurate component alignment provided by the precisely machined shoulder with controlled diameter and length tolerances.
- Broad compatibility with 5/16"-18 UNC coarse threads, conforming to widely used industrial standards.
- Compliance with major regulations including RoHS 3 and REACH, ensuring environmental and safety standards are met.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address common challenges in precision machinery, such as misalignment and corrosion-induced failure. The Class 3A thread fit and precisely toleranced shoulder diameter and length ensure components remain securely positioned, reducing wear and maintenance in applications like rotating assemblies, pivoting joints, and guide mechanisms. The coarse UNC threads facilitate quick assembly and disassembly, while the knurled socket head allows for high-torque installation without slippage. Its high tensile and shear strength makes it suitable for demanding environments, from food processing equipment to marine hardware, where reliability and durability are paramount.
Specification Summary & Compliance
This shoulder screw features a 5/16"-18 UNC thread with Class 3A fit for high precision, a shoulder diameter of 3/8" (tolerance: -0.004" to -0.002"), and shoulder length of 9/16" (tolerance: -0.005" to 0.005"). It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safety and regulatory adherence for industrial use.
