S-97768A444 3/8"-16 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
- Exceptional corrosion resistance with 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments
- Superior load-bearing capability with 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance under stress
- Precise component alignment ensured by the 1/2" shoulder diameter with tight tolerances and 2 1/4" shoulder length
- Secure, non-slip installation thanks to the knurled socket head and hex drive design for easy torque application
- Accurate thread engagement with Class 3A UNC coarse threads, providing consistent fastening in high-vibration applications
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for guaranteed quality and safety
- Enhanced durability with Rockwell B55 hardness, resisting wear in repetitive assembly operations
Professional Applications & Engineering Value
This shoulder screw is engineered to address critical alignment and mechanical stability challenges in industrial machinery. The 18-8 stainless steel material, combined with a black oxide finish, offers excellent resistance to corrosion and oxidation, extending service life in demanding settings like manufacturing equipment and automation systems. The 1/2" shoulder diameter with precise tolerances ensures components remain perfectly positioned, reducing misalignment and wear. The UNC coarse thread and Class 3A fit provide reliable fastening in high-stress applications, while the knurled socket head allows for secure tool engagement, minimizing slippage during installation. Ideal for use as an alignment pin or pivot point, this fastener enhances operational efficiency and reduces maintenance needs in industrial fastening scenarios.
Specification Summary & Compliance
This shoulder screw features a 3/8"-16 UNC thread with Class 3A precision for consistent fit. Shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring exact alignment. Manufactured to ASME B18.3 specifications, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable industrial use.
