S-97768A257 8-32 ASME B18.3 Shoulder Screws
Shoulder Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable, high-stress fastening.
- Precise alignment and smooth rotation ensured by the 1/4" shoulder diameter with tight tolerances for consistent performance.
- Easy installation and removal with a knurled socket head and 1/8" hex drive, providing a secure grip and reducing tool slippage.
- Wide compatibility and secure fit thanks to the 8-32 UNC coarse thread with Class 3A fit, ensuring minimal loosening in vibrating applications.
- Enhanced durability and wear resistance from Rockwell B55 hardness, extending service life in demanding conditions.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, guaranteeing safety and regulatory adherence.
Professional Applications & Engineering Value
This shoulder screw is engineered to address critical challenges in industrial fastening, such as misalignment and component wear. The 18-8 stainless steel material, combined with a black oxide finish, provides excellent corrosion resistance, making it suitable for machinery exposed to moisture or chemicals. The 1/4" shoulder diameter with precise tolerances allows for accurate positioning of parts like gears and pulleys, reducing friction and extending equipment life. With a coarse 8-32 UNC thread and Class 3A fit, it ensures quick assembly and reliable holding power in high-vibration settings, from automotive assemblies to conveyor systems. The knurled socket head and hex drive design further enhance usability, minimizing installation time and errors in tight spaces.
Specification Summary & Compliance
This shoulder screw features a Class 3A thread fit for superior precision and a shoulder diameter tolerance of -0.004" to -0.002" with length tolerance of -0.005" to 0.005". It adheres to ASME B18.3 manufacturing standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and quality in production.
