S-90298A834 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 and passivated finish, ideal for harsh industrial environments.
- Exceptional strength and durability with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications.
- Precise Class 3A thread fit ensures reliable engagement and vibration resistance in critical assemblies.
- Accurate shoulder positioning with tight diameter and length tolerances for consistent alignment and reduced wear.
- Easy installation and removal thanks to the 3/8" hex drive and knurled head for enhanced grip.
- Broad compliance with ASME B18.3 standards, RoHS 3, and REACH for quality assurance and environmental safety.
- Versatile UNC coarse threading provides quick assembly and high load-bearing capacity in various machinery.
Professional Applications & Engineering Value
This 5/8"-11 UNC shoulder screw is engineered to address common industrial challenges such as misalignment, corrosion, and mechanical failure. Constructed from 18-8 Stainless Steel with a passivated finish, it offers excellent resistance to rust and chemicals, extending service life in demanding settings like manufacturing equipment, automotive systems, and precision machinery. The Class 3A thread fit and precisely machined shoulder—with tolerances as tight as ±0.001" in diameter—ensure stable rotational movement and reduced friction in pivots, bearings, and linkages. Its knurled head and hex drive facilitate secure handling during installation, making it a reliable choice for heavy-duty shoulder bolts that require consistent performance under high stress.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, featuring a Class 3A thread fit for precise UNC threading and shoulder dimensions with diameter tolerance of -0.001" to 0.001" and length tolerance of -0.005" to 0.005". It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability in industrial applications.
