S-90325A174 8-32 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 passivated 18-8 stainless steel, ideal for harsh industrial environments.
- Precise component alignment ensured by the smooth, accurately toleranced shoulder diameter (-0.001" to 0").
- High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications.
- Reliable and consistent thread engagement thanks to the Class 2A fit UNC coarse thread profile.
- Secure and flush installation enabled by the standard hex socket drive and smooth head texture.
- Compliance with major environmental regulations including RoHS 3 and REACH for global supply chain use.
- Optimized for right-hand thread assembly in standard machinery and equipment.
Professional Applications & Engineering Value
This 8-32 UNC shoulder screw is engineered to solve critical alignment and fastening challenges in industrial applications. The 18-8 stainless steel construction, enhanced by a passivated finish, provides excellent resistance to corrosion and wear, extending service life in demanding conditions. The precise shoulder diameter and length ensure accurate positioning of components such as gears, linkages, and bearings, reducing vibration and misalignment. With a Class 2A thread fit and coarse UNC thread, it offers quick assembly and reliable holding power, while the hex socket drive allows for tight, flush installation in confined spaces. This screw is ideal for machinery, automation systems, and precision equipment where durability and exact alignment are paramount.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent performance. Key dimensional tolerances include a shoulder diameter of -0.001" to 0" and shoulder length of 0" to 0.002". It is manufactured from 18-8 stainless steel with a passivated finish, achieving a tensile strength of 70,000 psi and Rockwell B55 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.
