S-91410A744 1/4"-20 x 2 1/2" 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 Rockwell B80 hardness steel construction, resisting deformation under high torque and vibration.
- Secure and permanent component positioning thanks to the cup point tip that bites into surfaces for a non-slip grip.
- Fast and easy installation with a coarse UNC thread and external square drive, allowing for high tightening torque with common tools.
- Reliable and predictable thread engagement ensured by the Class 2A thread fit, providing a standard clearance for consistent assembly.
- Durable, long-term performance in demanding environments due to the robust steel material and 2 1/2" length for deep seating.
- Confidence in quality and safety with compliance to ASME B18.6.2 manufacturing specifications.
- Environmentally responsible sourcing as it is RoHS 3 and REACH compliant, meeting strict international regulations.
Professional Applications & Engineering Value
This 1/4"-20 UNC steel set screw is engineered to solve critical challenges in industrial assembly and machinery. The cup point design provides superior resistance to loosening under vibrational stress, making it ideal for securing gears, pulleys, and collars on shafts. Its coarse thread spacing and Class 2A thread fit ensure quick installation and reliable performance in heavy-duty applications, reducing assembly time and maintenance needs. The Rockwell B80 hardness offers an optimal balance of strength and ductility, preventing thread stripping and head rounding during high-torque application with an external square drive. This fastener is a trusted solution for maintaining precise component alignment and operational integrity in automotive, manufacturing, and construction equipment.
Specification Summary & Compliance
This set screw features a 1/4"-20 UNC thread with a Class 2A thread fit for standard dimensional accuracy and assembly clearance. It is manufactured in compliance with the ASME B18.6.2 standard, ensuring consistent quality and performance. The product is also verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for hazardous substances.
