S-91410A742 1/4"-20 x 1 3/4" 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 UNC coarse threads and Class 2A fit for reliable, vibration-resistant fastening in demanding applications
- Superior durability and wear resistance due to the steel construction and Rockwell B80 hardness, ensuring long service life
- Secure and tamper-resistant installation provided by the external square drive and square head, allowing for high-torque application
- Effective component positioning with the cup tip design, which minimizes surface damage while providing a firm grip
- Broad industrial compatibility thanks to the 1/4"-20 thread size and 1 3/4" length, a common specification for machinery and equipment
- Guaranteed quality and interchangeability as it is manufactured to meet the precise dimensional requirements of ASME B18.6.2
- Safe for use in regulated environments with full compliance to RoHS 3 and REACH, ensuring no hazardous substances are present
Professional Applications & Engineering Value
This 1/4"-20 UNC steel set screw is engineered to solve critical challenges in industrial assembly and maintenance. The coarse thread spacing and Class 2A thread fit provide excellent engagement and resistance to loosening under vibration, a common issue in machinery and motor applications. Made from high-strength steel and heat-treated to a Rockwell B80 hardness, it withstands high shear and tensile stresses, preventing failure in heavy-duty fastening scenarios. The cup tip concentrates force for secure component positioning without excessive marring, ideal for securing gears, pulleys, and collars onto shafts. Its external square drive and square head design allow for efficient installation with standard tools, streamlining production and repair processes in automotive, aerospace, and manufacturing sectors.
Specification Summary & Compliance
This set screw adheres to stringent manufacturing standards, including a Class 2A thread fit for consistent assembly and the UNC (Unified Coarse) thread form. It is produced in compliance with the ASME B18.6.2 specification, ensuring dimensional accuracy and reliability. The product is certified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming its safety and environmental responsibility for global industrial use.
