S-90046A103 4-40 x 5/8" NAS1801-04-10 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
- Exceptional Tensile Strength – Withstands up to 160,000 psi for reliable performance in high-stress industrial applications.
- Superior Corrosion Resistance – Cadmium plating provides enhanced durability against environmental factors, extending service life.
- Precision Thread Fit – Class 3A thread fit ensures tight, secure fastening with minimal risk of loosening under vibration.
- Optimized Drive Compatibility – External Hex/Phillips drive allows for versatile tool use and efficient installation in confined spaces.
- High Hardness Rating – Rockwell C34 hardness maintains structural integrity and resists wear during repeated use.
- Partially Threaded Design – Enables precise clamping force control and reduces material stress in assembled components.
- Compliance with Rigorous Standards – Meets NAS1801-04-10 specifications, ensuring consistency and reliability in aerospace and industrial settings.
Professional Applications & Engineering Value
Engineered for demanding environments, this 4-40 UNC hex head screw combines cadmium-plated steel construction with a Class 3A thread fit to address common industrial challenges such as vibration-induced loosening and corrosion. The partially threaded design allows for controlled tension distribution, preventing joint failure in aerospace assemblies, machinery, and electronic enclosures. With a coarse thread spacing and external hex/Phillips drive, it facilitates quick installation and removal, reducing downtime in maintenance-heavy applications. By adhering to NAS1801-04-10 standards, it ensures interoperability and safety, making it ideal for OEMs and MRO operations seeking durable, high-performance fasteners.
Specification Summary & Compliance
This screw features a 4-40 UNC thread size with Class 3A thread fit for precise dimensional accuracy, as per unified inch standards. It is manufactured to meet NAS1801-04-10 specifications, ensuring consistent quality in aerospace and industrial uses. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming adherence to environmental and safety regulations for hazardous substances.
