S-97768A413 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 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments.
- High tensile strength of 70,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
- Precise Class 3A thread fit and UNC coarse threads provide secure, vibration-resistant connections for improved assembly stability.
- Knurled socket head with hex drive allows for easy installation and removal, even in tight spaces, enhancing maintenance efficiency.
- Accurate shoulder diameter and length with tight tolerances ensure consistent alignment and smooth rotational movement in assemblies.
- Compliance with ASME B18.3 standards guarantees dimensional consistency and interoperability with other components.
- RoHS 3 and REACH compliant for safe use in regulated industries, supporting environmental and health standards.
Professional Applications & Engineering Value
This 3/8"-16 UNC shoulder screw is engineered to address common challenges in precision machinery, such as misalignment and wear in rotating parts. The 1/2" shoulder diameter and controlled tolerances provide a stable bearing surface, reducing friction and extending component life in applications like pivots, gears, and linkages. Made from 18-8 stainless steel with a black oxide finish, it offers excellent resistance to corrosion and oxidation, making it suitable for automotive, aerospace, and industrial equipment. The coarse UNC threads and Class 3A fit ensure quick, secure fastening, minimizing assembly time while maintaining high shear and tensile strength for heavy-duty use.
Specification Summary & Compliance
This shoulder screw features a 3/8"-16 UNC thread with Class 3A fit for precise engagement, a shoulder diameter of 1/2" with tolerance of -0.004" to -0.002", and shoulder length of 3/8" with tolerance of -0.005" to 0.005". It meets ASME B18.3 specifications for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards in industrial applications.
