S-97345A814 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 industrial environments and extended service life
- Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for reliable performance under heavy loads
- Precision Class 3A thread fit ensures secure, vibration-resistant fastening and consistent assembly quality
- Knurled socket head with 5/16" hex drive provides a positive, non-slip grip for easy installation and removal, even in tight spaces
- Long 3" shoulder with tight tolerances offers precise alignment and acts as a reliable pivot or spacer in mechanical assemblies
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees product quality, safety, and environmental responsibility for global supply chains
- Coarse UNC thread enables quick assembly and reduces the risk of cross-threading in high-volume production environments
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to solve critical alignment and durability challenges in demanding applications. The 3" shoulder length with minimal diameter tolerance provides an exact bearing surface, eliminating misalignment in machinery, conveyor systems, and rotating assemblies. The coarse 3/8"-16 UNC thread and Class 3A fit ensure rapid, secure fastening while resisting loosening under vibration, making it ideal for automotive jigs, packaging equipment, and material handling systems. The knurled socket head enhances grip for maintenance in oily or high-torque conditions. Manufactured from corrosion-resistant 316 stainless steel, it performs reliably in chemical processing, marine, and food-grade environments, reducing downtime and replacement costs.
Specification Summary & Compliance
This shoulder screw features a 3/8"-16 UNC coarse thread with a Class 3A thread fit for precision engagement. The shoulder maintains a diameter of 5/8" with a tolerance of -0.004" to -0.002" and a length of 3" with a tolerance of -0.005" to 0.005". It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, ensuring material safety and environmental adherence.
