S-97345A687 3/8"-24 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 from 316 stainless steel construction, ideal for harsh environments and chemical exposure.
- Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under high stress.
- Precision alignment and reduced wear thanks to the Class 3A thread fit and standard shoulder fit for accurate component positioning.
- Secure and easy installation with a knurled socket head and 1/4" hex drive, providing excellent grip and torque application.
- Long-term durability from fine UNF threads and a Rockwell B79 hardness, resisting stripping and maintaining integrity.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.
- Versatile shoulder design with a 1/2" diameter and 1 1/2" length for stable pivoting and spacing in assemblies.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automotive, and aerospace assemblies. The 3/8"-24 UNF fine thread with Class 3A fit ensures minimal backlash and vibration resistance, crucial for dynamic loads. Its knurled socket head and hex drive facilitate quick, secure fastening in tight spaces, reducing assembly time. The robust shoulder diameter and length provide a stable bearing surface, preventing misalignment and wear in rotating parts. Ideal for industrial applications requiring high corrosion resistance and strength, this fastener enhances equipment longevity and reduces maintenance costs in demanding environments.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for precise engagement. Dimensions include a shoulder diameter of 1/2" (tolerance: -0.004" to -0.002") and length of 1 1/2" (tolerance: -0.005" to 0.005"). It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and regulatory conformity for global supply chains.
