S-90318A503 8-32 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 chemical and marine environments
- Exceptional mechanical strength with 70,000 psi tensile strength and 35,000 psi shear strength for reliable load-bearing performance
- Precise component alignment through the 3/4" shoulder with tight diameter and length tolerances for reduced assembly vibration
- Optimized drive engagement with ultra-low socket head and 3/32" hex drive preventing cam-out during high-torque installation
- Consistent thread performance with Class 2A fit UNC coarse threads ensuring smooth engagement and vibration resistance
- Enhanced durability with Rockwell B70 hardness maintaining dimensional stability under repeated use
- Regulatory compliance meeting RoHS 3 and REACH standards for global industrial applications
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw delivers critical engineering solutions where precision alignment and corrosion resistance are paramount. The 3/4" shoulder length with precise diameter control acts as a permanent spacer in rotating assemblies, eliminating the need for additional components in machinery, conveyor systems, and precision instruments. The UNC coarse threads with Class 2A fit provide rapid assembly in production environments while resisting loosening under vibration. Combined with the ultra-low socket head design, it maintains flush mounting in confined spaces typical of automotive, marine, and food processing equipment. The 70,000 psi tensile strength ensures reliable performance in high-stress pivot points and bearing surfaces, making it an ideal choice for durable industrial fastening applications.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit and shoulder tolerances (-0.001" to 0" diameter, 0" to 0.002" length). Features 8-32 UNC coarse threads with right-hand orientation and 3/32" hex drive. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for hazardous substance restrictions.
