S-97345A698 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
- Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and washdown applications
- Precise component alignment ensured by the 1/2" shoulder diameter with tight manufacturing tolerances
- High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength for demanding mechanical loads
- Reliable, secure threading provided by the Class 3A UNC thread fit, minimizing the risk of cross-threading and loosening
- Easy installation and removal with the 1/4" hex socket drive and knurled head for enhanced grip
- Broad industry compliance meeting ASME B18.3 standards and environmental regulations like RoHS and REACH
- Durable, long-lasting service life due to the Rockwell B79 hardness and robust material properties
Professional Applications & Engineering Value
This 316 Stainless Steel shoulder screw is engineered to solve critical alignment and corrosion challenges in industrial and mechanical assemblies. The precision-machined 1/2" shoulder provides a stable bearing surface for rotating components like gears, pulleys, and linkages, eliminating the need for separate spacers and reducing assembly complexity. The Class 3A UNC thread ensures a tight, secure fit in tapped holes, vital for maintaining alignment under vibration and load. The corrosion-resistant properties of 316 stainless steel make it suitable for food processing, marine, and chemical applications, while the socket head with hex drive allows for high-torque installation in confined spaces. This fastener delivers reliable performance in precision machinery, automation systems, and heavy-duty equipment.
Specification Summary & Compliance
This shoulder screw features a 3/8"-16 UNC coarse thread with a Class 3A thread fit for high precision. The shoulder diameter is 1/2" with a tolerance of -0.004" to -0.002", and the shoulder length is 3/8" with a tolerance of -0.005" to 0.005". It is manufactured in compliance with ASME B18.3 standards and is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant.
