S-8077A294 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 in harsh environments thanks to 316 stainless steel construction with black oxide finish
- Precise component alignment with Class 3A thread fit ensuring tight tolerances and reduced vibration
- Exceptional mechanical strength delivering 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Secure tool engagement with knurled socket head and 1/4" hex drive preventing slippage during installation
- Reliable shoulder positioning with 1/2" diameter shoulder maintaining precise component spacing
- Industry-standard compliance meeting ASME B18.3 specifications for guaranteed interoperability
- Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing operations
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw with black oxide finish provides critical corrosion resistance in chemical processing, marine, and food equipment applications where moisture and corrosive agents degrade ordinary fasteners. The Class 3A thread fit and UNC coarse threading ensure rapid assembly while maintaining vibration resistance in machinery, automation systems, and precision instruments. The knurled socket head with 1/4" hex drive allows high-torque installation without cam-out, while the precision 1/2" shoulder diameter acts as a permanent bearing surface or pivot point in rotating assemblies, eliminating the need for additional spacers and reducing component count in complex mechanical designs.
Specification Summary & Compliance
This shoulder screw features 3/8"-16 UNC coarse threads with Class 3A fit for precision engagement, manufactured from 316 stainless steel with black oxide finish. Critical dimensions include 1/2" shoulder diameter (-0.004" to -0.002" tolerance) and 4 1/2" shoulder length (-0.005" to 0.005" tolerance). The fastener meets ASME B18.3 specifications and demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.
