S-97832A374 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, ideal for harsh industrial environments.
- Enhanced load-bearing capacity thanks to 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable performance.
- Precise alignment and reduced wear with a 5/8" shoulder diameter and standard shoulder fit for stable component mounting.
- Secure, non-slip installation using a knurled socket head and 5/16" hex drive for improved torque application.
- Consistent thread engagement with Class 3A UNC coarse threads, ensuring tight, vibration-resistant connections.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for safe, regulated use.
- Durable, long-lasting performance backed by Rockwell B55 hardness, resisting deformation under stress.
Professional Applications & Engineering Value
This 3/8"-16 UNC shoulder screw is engineered to address critical alignment and durability challenges in industrial machinery, automation systems, and precision equipment. The 18-8 Stainless Steel material offers excellent corrosion resistance, reducing maintenance in moist or chemically aggressive settings. With a 5/8" shoulder diameter and 1-1/4" shoulder length, it provides a stable pivot or spacer, minimizing misalignment and wear on moving parts. The Class 3A thread fit and coarse UNC threads ensure reliable fastening under vibration, while the knurled socket head enhances grip during installation. Ideal for applications requiring high strength and precision, such as robotics, conveyor systems, and assembly jigs, this screw delivers consistent performance and extends equipment lifespan.
Specification Summary & Compliance
This shoulder screw features precise dimensions, including a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005", ensuring accurate fits. It adheres to ASME B18.3 specifications for manufacturing consistency and offers Class 3A thread fit for superior thread engagement. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, it meets environmental and safety regulations for industrial use.
