S-94495A253 1/4"-28 x 3/8" 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
- Secure vibration-resistant locking with nylon patch thread locker that maintains performance across a wide temperature range from -70° to 250°F
- Exceptional thread precision with Class 3A fit ensuring tight tolerances and reliable fastening in demanding applications
- Superior corrosion resistance through black-oxide coating on alloy steel, extending service life in harsh industrial environments
- High strength durability with Rockwell C45 hardness providing excellent resistance to wear and deformation under load
- Flush mounting capability due to headless hex drive design, allowing for seamless integration where protruding fasteners are problematic
- Enhanced grip and torque transmission through 1/8" hex drive that prevents stripping during installation
- Industry standard compliance meeting ASME B18.3 specifications for consistent quality and interchangeability
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering solutions where vibration resistance and precise positioning are paramount. The nylon patch thread locker embedded in the UNF fine threads creates permanent friction that prevents loosening under dynamic loads, making it ideal for machinery, automotive assemblies, and precision equipment. The headless hex drive design with 1/8" drive size allows for completely flush installations in confined spaces while maintaining high torque capability. Engineered with Class 3A thread fit and Rockwell C45 hardness, this fastener ensures dimensional accuracy and structural integrity in high-stress applications, from manufacturing jigs to aerospace components where thermal stability from -70° to 250°F is essential.
Specification Summary & Compliance
This set screw features 1/4"-28 UNF fine threads with Class 3A thread fit precision and 3/8" length. Manufactured to ASME B18.3 specifications with black-oxide alloy steel construction and Rockwell C45 hardness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
