S-91410A743 1/4"-20 x 2 1/4" ASME B18.6.2 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
- Exceptional holding power with coarse UNC threading and Class 2A fit for reliable, vibration-resistant fastening in demanding applications.
- Superior durability and wear resistance provided by steel construction and Rockwell B80 hardness, ensuring a long service life.
- Secure and easy installation with a square head and external square drive, allowing for high torque application with standard tools.
- Broad industrial compatibility due to the 1/4"-20 UNC thread size, a common standard for machinery and equipment assembly.
- Confident regulatory compliance, meeting ASME B18.6.2 specifications and being RoHS 3 and REACH compliant for global supply chain use.
- Optimized for high-stress applications with a 2 1/4" length and cup tip for deep engagement and secure positioning of components.
Professional Applications & Engineering Value
This steel square head set screw is engineered to solve critical fastening challenges in industrial machinery, automotive assemblies, and heavy equipment. The 1/4"-20 UNC coarse thread and Class 2A fit ensure rapid assembly and a secure grip that resists loosening under vibration, a common failure point in dynamic environments. The square head design with an external drive accommodates high torque application, preventing tool slippage and damage during installation. Manufactured from high-strength steel with a Rockwell B80 hardness, it provides excellent resistance to shear forces and wear, making it a reliable choice for permanent or semi-permanent set applications where durability and holding power are paramount.
Specification Summary & Compliance
This set screw features a 1/4"-20 UNC thread with a Class 2A thread fit for consistent, precision threading. It is manufactured in compliance with the ASME B18.6.2 standard, ensuring dimensional accuracy and performance reliability. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for hazardous substances.
