S-97832A130 3/8"-24 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
- Exceptional strength and durability with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications
- Precise alignment and smooth rotation ensured by the 1/2" shoulder with tight diameter tolerance
- Secure, high-precision threading with Class 3A UNF fine thread for reliable, vibration-resistant connections
- Easy installation and removal using the 1/4" hex socket drive and knurled head for improved grip
- Full regulatory compliance with ASME B18.3 standards, RoHS 3, and REACH for safe, global usage
- Optimized for machinery and equipment with fine thread spacing and standard shoulder fit for consistent performance
Professional Applications & Engineering Value
This precision shoulder screw is engineered to address critical alignment and rotational movement challenges in industrial machinery and equipment. The 18-8 stainless steel provides excellent corrosion resistance, reducing maintenance needs in humid or chemically aggressive environments. The 1/2" shoulder length and tight diameter tolerance ensure precise component positioning, minimizing wear and misalignment in assemblies requiring pivoting or sliding motion. The Class 3A UNF fine thread offers superior clamping force and vibration resistance, crucial for high-stress applications like automotive fixtures, robotics, and precision instruments. Combined with the hex socket drive and knurled head, it allows for secure, tool-friendly installation in confined spaces, enhancing assembly efficiency and reliability.
Specification Summary & Compliance
This shoulder screw features a 3/8"-24 UNF fine thread with Class 3A thread fit for high precision and strength. The shoulder diameter is 1/2" with a tolerance of -0.004" to -0.002", and shoulder length is 1/2" with a tolerance of -0.005" to 0.005", ensuring consistent performance. It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, guaranteeing safety and regulatory adherence for industrial and export use.
