S-8077A811 1/4"-20 ASME B18.3 Shoulder Screws
Shoulder Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
- Enhanced durability and wear resistance from the black oxide finish, which also provides a sleek, non-reflective surface.
- High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength, ensuring reliable load-bearing in demanding assemblies.
- Precise and secure fit with Class 3A thread tolerance, minimizing the risk of loosening under vibration and improving assembly accuracy.
- Easy installation and removal using a standard 5/32" hex drive and knurled head for improved grip and torque application.
- Versatile coarse threading (UNC) for faster assembly and reduced cross-threading risks in a wide range of materials.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw with a black oxide finish is engineered to address common industrial challenges such as corrosion, vibration loosening, and high-stress applications. The UNC coarse thread and Class 3A precision fit ensure quick, secure fastening in machinery, automotive, and electronics assemblies, reducing assembly time and improving reliability. The knurled head and hex drive design facilitate easy handling and torque control, while the robust shoulder diameter provides precise alignment and acts as a pivot or spacer in rotating components. Ideal for industrial screws in equipment requiring high tensile and shear strength, this fastener delivers long-term performance in demanding environments.
Specification Summary & Compliance
This shoulder screw features a 1/4"-20 UNC thread with Class 3A precision fit, ensuring tight tolerances for reliable performance. It adheres to ASME B18.3 manufacturing standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial use without hazardous substances.
