S-97768A437 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
- Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Superior load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Precise thread engagement with Class 3A fit and UNC coarse threads ensuring reliable fastening and vibration resistance
- Enhanced durability and wear resistance from the black oxide finish, providing added protection against abrasion
- Secure installation and removal with the 1/4" hex drive and knurled head for improved grip and torque application
- Accurate alignment and spacing thanks to the precisely machined shoulder with tight diameter and length tolerances
- 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 challenges in industrial assembly, such as maintaining precise component alignment and withstanding high-stress conditions. Made from 18-8 stainless steel with a black oxide finish, it offers excellent corrosion resistance and reduced galling, making it suitable for machinery, automotive, and aerospace applications. The UNC coarse threads and Class 3A thread fit ensure quick assembly and reliable performance in vibrating environments. Its knurled head and hex drive facilitate easy installation, while the robust shoulder provides stable support for rotating parts, reducing wear and extending equipment life.
Specification Summary & Compliance
This shoulder screw features a 3/8"-16 UNC thread with Class 3A fit for high precision, and shoulder dimensions including a diameter of 1/2" (tolerance: -0.004" to -0.002") and length of 1 3/4" (tolerance: -0.005" to 0.005"). It complies with ASME B18.3 manufacturing standards and is certified RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring environmental safety and regulatory adherence.
