S-94495A249 1/4"-20 x 1" ASME B18.3, ASTM F912 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
- Maximum vibration resistance with a permanent nylon patch thread locker that prevents loosening under dynamic loads
- Superior corrosion protection from the black-oxide finish on alloy steel, extending service life in harsh environments
- High-strength performance with Rockwell C45 hardness for reliable, durable fastening in demanding applications
- Precise, secure fit due to Class 3A UNC coarse threads, ensuring tight engagement and reduced risk of cross-threading
- Easy installation and removal with a hex drive (1/8") and headless design, ideal for confined spaces
- Broad temperature tolerance from -50° to 250°F, maintaining locking integrity in varied operating conditions
- Long-term reliability backed by compliance with ASME B18.3, RoHS 3, and REACH standards for quality and safety
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address common industrial challenges like vibration-induced loosening and component slippage. The nylon patch thread locker provides a permanent locking mechanism, eliminating the need for additional adhesives and reducing maintenance downtime in machinery, automotive assemblies, and precision equipment. Its Class 3A UNC coarse threads offer quick installation and high resistance to wear, while the headless design with hex drive allows for flush mounting in tight spaces. Ideal for securing gears, pulleys, and collars, this screw ensures consistent performance in high-stress environments, from manufacturing plants to outdoor installations, thanks to its robust material and temperature-resistant properties.
Specification Summary & Compliance
This set screw adheres to Class 3A thread fit for precise dimensional accuracy and features UNC coarse threads (1/4"-20) with a right-hand direction. Manufactured in compliance with ASME B18.3 specifications, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring environmental safety and regulatory conformity for industrial use.
