S-92311A554 1/4"-20 x 3" ASME B18.3 Set Screws
Set 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 environments and long-term reliability.
- Exceptional holding power from the Class 3A thread fit, ensuring tight, secure fastening with minimal risk of loosening.
- High-strength durability with a Rockwell B80 hardness, providing excellent resistance to wear and deformation under load.
- Easy installation and removal using a standard 1/8" hex key, thanks to the headless design and hex drive style.
- Reliable grip on shafts and components with the cup tip, which minimizes surface damage while maintaining strong clamping force.
- Broad industrial compatibility due to UNC coarse threading, allowing for quick assembly and disassembly in various applications.
- Compliance with strict regulations, including RoHS 3 and REACH, ensuring safe use in global markets and sensitive industries.
Professional Applications & Engineering Value
This 1/4"-20 x 3" hex headless set screw is engineered to address common industrial challenges such as component slippage, corrosion-induced failure, and assembly inefficiency. Made from 18-8 stainless steel, it offers excellent resistance to rust and chemicals, making it suitable for applications in machinery, automotive, and outdoor equipment where exposure to moisture is a concern. The UNC coarse thread and Class 3A thread fit provide a precise, tight engagement that reduces the need for frequent retightening, while the cup tip design ensures minimal marring on shafts or hubs. Its headless construction allows for flush mounting in confined spaces, enhancing safety and aesthetics in assemblies requiring secure axial positioning.
Specification Summary & Compliance
This set screw features a 1/4"-20 UNC coarse thread with a Class 3A thread fit for high precision and strength. It complies with ASME B18.3 specifications for dimensional accuracy and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety standards for industrial fasteners.
