S-90298A653 5/16"-18 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 18-8 stainless steel construction for reliable performance in harsh industrial environments
- Precise component alignment through the 7" shoulder length with tight diameter tolerance for stable rotational movement
- Enhanced torque transmission with Class 3A thread fit ensuring secure fastening in high-vibration applications
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications
- Easy installation and removal featuring hex socket drive and knurled head for improved grip during assembly
- Reliable shear resistance with minimum 35,000 psi shear strength for demanding mechanical loads
- Industry compliance assurance meeting ASME B18.3 specifications and environmental regulations including RoHS and REACH
Professional Applications & Engineering Value
This precision shoulder screw delivers exceptional engineering value through its 18-8 stainless steel construction and 7" shoulder length, specifically designed to address alignment challenges in rotating assemblies and machinery components. The Class 3A thread fit ensures minimal backlash in high-precision equipment, while the knurled head and hex drive facilitate secure handling during installation. Ideal for industrial applications requiring precise shaft alignment, this socket head shoulder screw maintains dimensional stability under heavy loads, making it perfect for machinery, automation systems, and precision instruments where reliable rotational movement and corrosion resistance are critical.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit and UNC thread form (5/16"-18) for superior engagement. The shoulder diameter maintains tight tolerance (-0.004" to -0.002") while the shoulder length features precision control (-0.005" to 0.005"). This shoulder screw complies with ASME B18.3 manufacturing specifications and meets environmental standards including RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant requirements.
