S-90298A714 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 and passivated finish, ideal for harsh industrial environments.
- Precise alignment and smooth rotation ensured by the 1/2" shoulder diameter with tight tolerance for reliable assembly.
- High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications.
- Secure, non-slip fastening thanks to the knurled hex socket head, providing superior grip during installation.
- Accurate and durable thread engagement with Class 3A UNC coarse threads, reducing cross-threading risks.
- Broad compatibility and reliability by meeting ASME B18.3 standards, ensuring consistent quality and interchangeability.
- Environmentally safe use with RoHS 3 and REACH compliance, suitable for global supply chains.
Professional Applications & Engineering Value
This shoulder screw is engineered to address critical alignment and wear issues in machinery, such as in pivoting joints, gear assemblies, and conveyor systems. The 18-8 stainless steel construction, combined with a passivated finish, provides excellent resistance to rust and chemicals, extending service life in humid or corrosive settings. The 1/2" shoulder diameter with minimal tolerance ensures precise component positioning, reducing vibration and misalignment. Featuring a hex socket head with knurling, it allows for easy installation in tight spaces while preventing tool slippage. Ideal for industrial applications requiring high tensile strength and repeatable accuracy, this screw supports efficient maintenance and reduced downtime in automated equipment.
Specification Summary & Compliance
This shoulder screw adheres to Class 3A thread fit and UNC coarse threads for reliable fastening, with shoulder diameter tolerance of -0.001" to 0.001" and length tolerance of -0.005" to 0.005". It conforms to ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry-standard performance.
