S-90046A123 1/4"-28 x 3/4" NAS1801-4-12 High-Strength Steel Hex Head Screws with Phillips Drive
High-Strength Steel Hex Head Screws with Phillips Drive
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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
- Superior tensile strength of 160,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Precision Class 3A thread fit provides excellent engagement and vibration resistance, minimizing loosening in dynamic environments.
- Cadmium plating offers enhanced corrosion resistance, extending service life in harsh industrial conditions.
- Rockwell C34 hardness delivers exceptional durability and wear resistance, maintaining integrity under repeated use.
- External Hex/Phillips drive allows for versatile installation with common tools, improving assembly efficiency.
- NAS1801-4-12 compliance guarantees adherence to rigorous aerospace and industrial standards, ensuring quality and reliability.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory acceptance for global supply chains.
Professional Applications & Engineering Value
This 1/4"-28 UNF hex head screw is engineered with steel material and cadmium plating to address critical challenges in demanding sectors like aerospace, automotive, and heavy machinery. Its fine thread spacing and Class 3A thread fit provide superior clamp load retention and vibration resistance, preventing joint failure in high-vibration environments. The partially threaded design allows for precise tension control, reducing stress concentration and enhancing structural integrity. Ideal for assemblies requiring high-strength fasteners, this screw ensures long-term reliability and compliance with NAS standards, making it a trusted choice for engineers focused on safety and performance.
Specification Summary & Compliance
This screw features a 1/4"-28 UNF thread with Class 3A thread fit for precise dimensional accuracy, and it is manufactured to meet NAS1801-4-12 specifications. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring adherence to environmental and safety regulations. The inch-based measurements, such as thread diameter of 0.25" and length of 3/4", support consistent performance in standardized assemblies.
