S-97345A738 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 and marine environments
- High-strength performance with 70,000 psi tensile and 35,000 psi shear strength for demanding mechanical applications
- Precise component alignment enabled by the 3-1/2" shoulder with tight diameter and length tolerances
- Secure, non-slip installation thanks to the knurled head and 1/4" hex socket drive
- Reliable thread engagement with Class 3A UNC coarse threads for superior fastening in right-hand applications
- Industry-standard compliance meeting ASME B18.3 specifications for consistent quality and interchangeability
- Environmental regulation adherence with RoHS 3 and REACH compliance for global market suitability
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw delivers critical engineering value in precision assemblies where alignment and corrosion resistance are paramount. The extended 3-1/2" shoulder length with controlled tolerances provides accurate pivot points and bearing surfaces in machinery, automation equipment, and conveyor systems. The Class 3A UNC coarse thread ensures rapid assembly and vibration resistance in high-cycle applications, while the knurled socket head prevents tool slippage during torque-intensive installations. Manufactured from 316 stainless steel, this socket head shoulder screw maintains integrity in corrosive environments including chemical processing, marine hardware, and food processing equipment, solving common failure points in industrial fastening systems.
Specification Summary & Compliance
This shoulder screw features precision Class 3A thread fit with 3/8"-16 UNC coarse threading and maintains tight shoulder diameter tolerance of -0.004" to -0.002" with shoulder length tolerance of -0.005" to 0.005". Manufactured to ASME B18.3 specifications with Rockwell B79 hardness, ensuring dimensional consistency and mechanical performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for restricted substances.
