S-97768A473 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 18-8 Stainless Steel construction and Black Oxide finish, ideal for harsh industrial environments
- Precise alignment and reduced assembly wear thanks to the 5/8" shoulder diameter with tight tolerances for consistent component positioning
- High-strength fastening performance with 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications
- Reliable thread engagement ensured by Class 3A UNC coarse threads, providing secure connections in high-vibration settings
- Easy installation and removal with a hex socket drive and knurled head for improved grip during tool operation
- Long-term durability from Rockwell B55 hardness, maintaining structural integrity under repeated loads
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for quality assurance and environmental safety
Professional Applications & Engineering Value
This shoulder screw is engineered to address critical alignment and durability challenges in industrial applications such as machinery assemblies, pivoting mechanisms, and precision equipment. The 18-8 Stainless Steel material, combined with a Black Oxide finish, provides excellent resistance to corrosion and wear, extending service life in demanding conditions. The 5/8" shoulder diameter with controlled tolerances ensures precise component location, reducing misalignment and wear on adjacent parts. With UNC coarse threads and a Class 3A fit, it offers secure fastening in high-vibration environments, while the socket head and knurled texture facilitate easy installation. Ideal for use in automotive, aerospace, and manufacturing sectors, this screw delivers reliable performance where strength and precision are paramount.
Specification Summary & Compliance
This shoulder screw adheres to strict dimensional standards, including a Class 3A thread fit for precise engagement and a shoulder diameter tolerance of -0.004" to -0.002". It conforms to ASME B18.3 specifications for consistent quality and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets environmental and safety regulations for industrial use.
