S-90298A161 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 18-8 Stainless Steel construction, ideal for harsh industrial environments
- Precise alignment and smooth rotation ensured by the 3/16" shoulder with tight tolerances for consistent performance
- High-strength reliability with 70,000 psi tensile and 35,000 psi shear strength for demanding mechanical applications
- Secure, non-slip installation using the knurled socket head with 3/32" hex drive for easy torque application
- Durable thread engagement with Class 3A fit and coarse 8-32 UNC threads for vibration resistance
- Environmental compliance assurance meeting RoHS 3 and REACH standards for safe, regulated use
- Consistent hardness and wear resistance from Rockwell B55 rating, extending service life
Professional Applications & Engineering Value
This 18-8 Stainless Steel shoulder screw is engineered to address critical alignment and load-bearing challenges in precision assemblies. The 3/16" shoulder length provides a stable pivot or spacer in machinery, reducing wear on moving parts and maintaining exact positioning. With a Class 3A thread fit and coarse UNC threads, it resists loosening under vibration, making it ideal for automotive, aerospace, and industrial equipment. The knurled socket head and hex drive allow for secure tightening in confined spaces, while the material's inherent corrosion resistance ensures longevity in humid or corrosive settings. These features collectively enhance operational reliability and reduce maintenance frequency in high-strength applications.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with an 8-32 size and Class 3A thread fit for precision tolerance. The shoulder diameter is 3/16" with a tolerance of -0.004" to -0.002", and the shoulder length is 3/16" with a tolerance of -0.005" to 0.005", ensuring consistent dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial use without hazardous substances.
