S-92505A533 1/4"-20 x 1/4" ASME B18.3, ASTM F912 Set Screws
Set 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 Black Oxide coating, extending service life in demanding industrial environments
- Precise Class 3A thread fit ensures tight, secure fastening with minimal backlash in critical assemblies
- Extended tip design provides enhanced biting action and permanent positioning capability
- High-strength alloy steel construction with Rockwell C45 hardness maintains integrity under heavy loads
- 1/8" hex drive compatibility allows for easy installation and removal with standard tools
- Coarse UNC threading enables quick assembly and disassembly while resisting vibration loosening
- Headless configuration offers flush mounting in space-constrained applications
Professional Applications & Engineering Value
This Black Oxide Alloy Steel set screw delivers exceptional performance in industrial machinery, automotive components, and precision equipment where reliable shaft positioning is critical. The extended tip design penetrates mating surfaces more effectively than standard set screws, creating permanent alignment points that withstand vibration and rotational forces. The Class 3A UNC thread provides superior fit in tapped holes, eliminating play in high-precision assemblies. With Rockwell C45 hardness, this fastener maintains its mechanical properties under repeated loading cycles, making it ideal for permanent installations in pulleys, gears, and collars where disassembly is infrequent. The corrosion-resistant black oxide finish ensures long-term reliability in environments with moderate moisture exposure.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit for precision applications. Features 1/4"-20 UNC coarse threads with right-hand direction and extended tip configuration (tip diameter: 0.156" ±0.007", tip length: 0.067" -0.005" to 0"). Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.
