S-90298A710 3/8"-16 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 passivated finish, ideal for harsh environments.
- Precise alignment and smooth rotation ensured by the 1/2" shoulder diameter with tight tolerance for reduced wear.
- High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications.
- Reliable, vibration-resistant assembly thanks to the Class 3A thread fit and coarse UNC thread for secure fastening.
- Easy installation and removal with a standard hex drive socket head and knurled texture for improved grip.
- Broad industry compliance meeting ASME B18.3 standards, RoHS 3, and REACH for safe, regulated use.
- Durable, long-lasting operation due to the right-hand thread and robust shoulder design for repetitive use.
Professional Applications & Engineering Value
This 3/8"-16 UNC shoulder screw is engineered to address critical alignment and durability challenges in industrial settings. Made from 18-8 stainless steel with a passivated finish, it resists corrosion and extends service life in machinery, automotive, and aerospace components. The 1/2" shoulder diameter provides a precise pivot or bearing surface, minimizing misalignment and reducing wear on moving parts. With a Class 3A thread fit and coarse thread spacing, it ensures tight, vibration-resistant connections in high-stress assemblies. Ideal for applications like rotating shafts, jigs, and fixtures, this screw enhances operational reliability and reduces maintenance needs.
Specification Summary & Compliance
This shoulder screw features a Class 3A thread fit with UNC coarse threads, ensuring high precision and interchangeability. Key dimensions include a shoulder diameter of 1/2" with a tolerance of -0.001" to 0.001" and shoulder length of 3/4" with -0.005" to 0.005" tolerance. It complies with ASME B18.3 specifications for consistent quality and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety standards for industrial use.
