S-90298A871 5/8"-11 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, ideal for harsh industrial environments
- Exceptional load-bearing capability with 70,000 psi tensile strength and 35,000 psi minimum shear strength for heavy-duty applications
- Precise component alignment ensured by tight shoulder diameter tolerance (-0.004" to -0.002") and Class 3A thread fit
- Enhanced grip and torque transmission through knurled head texture and 3/8" hex drive socket
- Reliable mechanical performance with Rockwell B55 hardness for consistent durability under stress
- Broad industrial compatibility with UNC coarse threads and right-hand direction for standard machinery
- Regulatory peace of mind with full compliance to ASME B18.3, RoHS 3, and REACH standards
Professional Applications & Engineering Value
This 5/8"-11 UNC shoulder screw delivers critical precision in applications requiring exact rotational alignment and axial positioning, such as in machinery mounts, pivoting assemblies, and precision instruments. The 18-8 Stainless Steel material offers excellent resistance to oxidation and chemical exposure, reducing maintenance in demanding settings like manufacturing plants or outdoor equipment. The 3/4" shoulder diameter with controlled tolerance ensures minimal play, while the coarse UNC thread and Class 3A fit provide secure fastening and vibration resistance. Its knurled head and hex drive allow for easy installation and high-torque handling, making it a reliable choice for engineers seeking durability and compliance in industrial shoulder screw applications.
Specification Summary & Compliance
This shoulder screw adheres to Class 3A thread fit and inch-based dimensions, including a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". It conforms to ASME B18.3 specifications for dimensional accuracy and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and standardized use across global industries.
