S-97345A822 1/2"-13 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.
- High tensile strength of 70,000 psi ensures reliable performance under heavy loads and reduces the risk of fastener failure.
- Precision Class 3A thread fit provides consistent, secure engagement and minimizes assembly issues in critical applications.
- Knurled socket head with 5/16" hex drive offers excellent grip and torque transmission, preventing tool slippage during installation.
- Long 1-1/8" precision shoulder acts as a stable bearing surface or pivot point, enhancing component alignment and reducing wear.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety regulations.
- Coarse UNC threads enable quick assembly and disassembly, saving time in maintenance and production cycles.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address common challenges in machinery, automation, and assembly systems. The precision shoulder with tight diameter and length tolerances ensures accurate positioning of moving parts, such as gears and linkages, reducing misalignment and vibration. The Class 3A UNC thread and 70,000 psi tensile strength provide a secure, high-strength fastening solution that withstands dynamic loads and harsh conditions, from chemical processing to outdoor equipment. Its knurled socket head and hex drive facilitate easy installation in confined spaces, enhancing efficiency in industrial applications where reliability and durability are critical.
Specification Summary & Compliance
This shoulder screw features a Class 3A thread fit with UNC coarse threads (1/2"-13) and a shoulder diameter tolerance of -0.004" to -0.002" for precise engineering. 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) regulations, ensuring environmental safety and industry-standard quality.
