S-97832A179 8-32 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 for long-lasting performance in harsh environments
- Precise component alignment ensured by the 1/4" shoulder diameter with tight tolerance for reduced assembly play
- High-strength fastening with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Secure, non-slip installation provided by the knurled socket head and hex drive for reliable torque transfer
- Consistent thread engagement guaranteed by Class 3A thread fit for vibration resistance and reduced loosening
- Broad industry compatibility with UNC coarse threads and compliance with ASME B18.3 standards
- Environmental and safety compliance meeting RoHS 3 and REACH regulations for responsible sourcing
Professional Applications & Engineering Value
This 8-32 UNC shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material offers excellent resistance to corrosion and oxidation, making it ideal for machinery, electronics, and automotive components exposed to moisture or chemicals. The Class 3A thread fit and coarse UNC thread provide reliable fastening in high-vibration environments, while the knurled socket head ensures secure tool engagement during installation. The precisely machined shoulder acts as a pivot, spacer, or bearing surface, reducing wear and simplifying assembly in jigs, rotating shafts, and linkage systems. By integrating ASME B18.3 standards, this screw delivers consistent dimensional accuracy, streamlining maintenance and replacement in industrial applications.
Specification Summary & Compliance
This shoulder screw features a Class 3A thread fit with UNC coarse threads (8-32 size) and a shoulder diameter of 1/4" (tolerance: -0.004" to -0.002"). It is manufactured in accordance with ASME B18.3 specifications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free of hazardous substances for safe use in global markets.
