S-91273A634 3/8"-16 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 18-8 stainless steel and black oxide finish for extended service life in harsh environments
- Exceptional load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Precision alignment and spacing through the 1 3/4" shoulder with tight tolerances for consistent component positioning
- Easy installation and removal with hex socket drive and knurled head providing secure grip during assembly
- Reliable thread engagement with Class 2A UNC coarse threads ensuring proper fit and vibration resistance
- Enhanced durability with Rockwell B55 hardness maintaining structural integrity under repeated use
- Compliance assurance meeting RoHS 3 and REACH regulations for safe use across industries
Professional Applications & Engineering Value
This 3/8"-16 UNC shoulder screw delivers critical engineering solutions where precision alignment and high strength are paramount. The 18-8 stainless steel construction with black oxide finish provides excellent corrosion resistance for machinery, automotive, and industrial equipment exposed to moisture and chemicals. The substantial 1 3/4" shoulder length with tight diameter tolerance (-0.004" to -0.002") ensures precise component spacing in assemblies, while the Class 2A thread fit and coarse UNC threads prevent loosening under vibration. The hex socket drive combined with the knurled head texture allows for secure tool engagement in confined spaces, making it ideal for precision instruments, rotating assemblies, and heavy-duty industrial applications requiring reliable fastening performance.
Specification Summary & Compliance
This shoulder screw features 3/8"-16 UNC coarse threads with Class 2A thread fit for standard industrial applications. The shoulder maintains precise dimensions with diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". Manufactured from 18-8 stainless steel with black oxide finish, it achieves 70,000 psi tensile strength and 35,000 psi shear strength with Rockwell B55 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental and safety standards.
