S-90298A887 3/4"-10 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 strength and durability with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
- High-precision alignment and smooth rotation provided by the 6" long shoulder with tight diameter tolerance.
- Secure and reliable fastening ensured by the Class 3A thread fit for minimal backlash and vibration resistance.
- Easy installation and removal with the 1/2" hex drive and knurled head for enhanced grip.
- Broad compatibility with the 3/4"-10 UNC coarse thread, conforming to common industrial standards.
- Compliance with major regulations including RoHS 3 and REACH, ensuring environmental and safety standards are met.
Professional Applications & Engineering Value
This 18-8 Stainless Steel shoulder screw is engineered to address critical challenges in industrial assembly and precision machinery. Its 3/4"-10 UNC coarse thread with Class 3A fit ensures a tight, reliable connection that resists loosening under vibration, common in heavy-duty equipment. The 6" precision shoulder provides a stable pivot or spacer, reducing wear and maintaining alignment in rotating parts like conveyor systems, automotive jigs, and robotic arms. Made from corrosion-resistant 18-8 Stainless Steel and featuring a 1/2" hex drive with a knurled head, it simplifies maintenance in tight spaces while enduring harsh conditions. This fastener delivers engineering value by enhancing assembly longevity and reducing downtime in applications from manufacturing to aerospace.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for high precision and a shoulder diameter tolerance of -0.004" to -0.002". The UNC coarse thread and standard shoulder fit ensure consistent performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), meeting environmental and safety standards for industrial use.
