S-8077A752 1/2"-13 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 and black oxide finish, ideal for harsh industrial environments
- Precise alignment and reduced wear through Class 3A thread fit and standardized shoulder diameter for consistent component positioning
- High mechanical strength with 70,000 psi tensile strength and 35,000 psi shear strength for demanding load applications
- Secure installation and removal using 5/16" hex drive and knurled head for enhanced grip and torque transmission
- Extended service life with Rockwell B79 hardness and coarse UNC threading resisting stripping and deformation
- Regulatory compliance assurance meeting ASME B18.3 standards and environmental directives including RoHS 3 and REACH
- Optimized for high-vibration applications with right-hand coarse threading and 5½" shoulder length maintaining joint integrity
Professional Applications & Engineering Value
Engineered for precision machinery and industrial assemblies, these 316 stainless steel shoulder screws deliver critical performance advantages in rotating equipment, automation systems, and precision tooling. The black oxide finish enhances corrosion resistance while maintaining dimensional stability under operational stress. The 5½" shoulder length provides accurate axial positioning for bearings, gears, and linkages, eliminating the need for additional spacers. With Class 3A thread fit and UNC coarse threading, these fasteners maintain clamp load in high-vibration environments while the knurled head and hex drive socket enable secure installation in confined spaces. Ideal for food processing, marine, and chemical applications where corrosion resistance and mechanical reliability are paramount.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit precision. Shoulder diameter maintains -0.004" to -0.002" tolerance with shoulder length tolerance of -0.005" to 0.005". Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Thread specifications: 1/2"-13 UNC right-hand orientation with coarse spacing.
