S-97345A776 3/8"-16 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 environments and chemical exposure.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for high-load applications.
- Precision Class 3A thread fit ensures reliable, secure fastening with minimal backlash in assemblies.
- Convenient installation and removal with a 5/16" hex socket drive and knurled head for improved grip.
- Accurate shoulder positioning with tight diameter and length tolerances for consistent alignment of mounted components.
- Broad industry compliance meeting ASME B18.3 standards and environmental regulations like RoHS 3 and REACH.
- Robust coarse UNC threads provide quick assembly and high resistance to vibration loosening.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to solve critical alignment and durability challenges in demanding sectors. The 3/8"-16 UNC thread with Class 3A fit guarantees precise engagement, reducing the risk of thread stripping under dynamic loads. Its 1-1/4" shoulder length and controlled tolerances allow for exact component spacing in machinery, pivots, and rotating assemblies, minimizing wear and misalignment. The socket head with knurled texture facilitates easy handling even in confined spaces, while the high tensile and shear strength ensures long-term reliability in automotive, aerospace, and marine applications. Compliant with ASME B18.3, it delivers consistent performance where corrosion resistance and mechanical integrity are paramount.
Specification Summary & Compliance
This shoulder screw features a 3/8"-16 UNC coarse thread with a Class 3A thread fit for high precision. The shoulder diameter is 5/8" with a tolerance of -0.004" to -0.002", and the shoulder length is 1-1/4" with a tolerance of -0.005" to 0.005". It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.
