S-91327A298 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, ideal for harsh environments and reducing maintenance costs.
- Reliable vibration resistance thanks to the integrated nylon patch thread locker, preventing loosening under dynamic loads from -50° to 250°F.
- High-strength performance offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding mechanical applications.
- Precise alignment and smooth rotation ensured by the 3/16" shoulder diameter with tight tolerance, minimizing wear in assemblies.
- Easy installation and removal with a standard hex socket drive (3/32"), allowing for efficient assembly in confined spaces.
- Consistent thread engagement through Class 3A UNC coarse threads, providing secure fastening and reducing cross-threading risks.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence in global markets.
Professional Applications & Engineering Value
This 18-8 Stainless Steel shoulder screw is engineered to address critical challenges in precision machinery and industrial equipment. The 3/16" shoulder diameter and 3/4" shoulder length provide a stable pivot or spacer, reducing misalignment and wear in rotating assemblies like bearings, gears, and linkages. The nylon patch locking feature secures the 8-32 UNC thread against vibrations in automotive, aerospace, and electronics applications, maintaining integrity in temperatures from -50° to 250°F. With a Class 3A thread fit and hex socket drive, it ensures quick, reliable installation in high-stress environments, enhancing durability and reducing downtime for B2B clients.
Specification Summary & Compliance
This shoulder screw features precise dimensions, including a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005", ensuring accurate Class 3A thread fit for UNC coarse threads. Manufactured in compliance with ASME B18.3 standards, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and industrial reliability.
