S-97345A607 1/4"-20 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 316 stainless steel construction for reliable performance in harsh environments
- Exceptional mechanical strength with 70,000 psi tensile strength and 35,000 psi shear strength for heavy-duty applications
- Precision thread engagement with Class 3A fit and UNC coarse threads ensuring secure fastening and vibration resistance
- Enhanced grip and torque application through knurled socket head with hex drive for slip-resistant installation
- Accurate component alignment with 3/8" shoulder diameter providing stable bearing surfaces for rotating parts
- Industry-standard compliance meeting ASME B18.3 specifications for guaranteed interchangeability and quality
- Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industries
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw delivers exceptional value in precision mechanical assemblies where corrosion resistance and dimensional stability are critical. The 1/4"-20 UNC coarse threads with Class 3A fit provide superior thread engagement in soft materials and high-vibration environments, while the 3/8" shoulder diameter maintains precise alignment for rotating components in machinery, automation systems, and bearing applications. The knurled socket head with hex drive ensures maximum torque transmission without slippage during installation. Engineered to withstand demanding conditions, these shoulder screws offer reliable performance in chemical processing, marine equipment, and food machinery where corrosion-resistant fasteners are essential for long-term operational integrity.
Specification Summary & Compliance
This precision shoulder screw features 1/4"-20 UNC coarse threads with Class 3A thread fit for superior engagement, a 3/8" shoulder diameter with tight tolerance control (-0.004" to -0.002"), and Rockwell B79 hardness rating. Manufactured in compliance with ASME B18.3 standards for dimensional consistency and mechanical properties. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental safety and regulatory adherence for industrial applications worldwide.
