S-90046A101 4-40 x 5/16" NAS1801-04-5 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 of 160,000 PSI ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
- Superior corrosion resistance from cadmium plating extends service life in harsh industrial environments, minimizing maintenance needs.
- Precision Class 3A thread fit guarantees secure, vibration-resistant connections, enhancing assembly integrity.
- Dual-drive capability with external hex and Phillips heads offers versatile installation options, improving workflow efficiency.
- High hardness rating (Rockwell C34) provides excellent wear resistance, maintaining thread integrity through repeated use.
- Compliance with NAS1801-04-5 and environmental standards (RoHS 3, REACH) ensures adherence to strict aerospace and industrial regulations.
- Coarse UNC threading facilitates quicker assembly and reduces cross-threading risks, saving time in production lines.
Professional Applications & Engineering Value
Engineered for demanding industrial and aerospace applications, this 4-40 UNC steel hex head screw addresses critical fastening challenges with its robust cadmium-plated finish that combats corrosion in exposed settings. The Class 3A thread fit and 160,000 PSI tensile strength ensure dependable performance in high-vibration environments, such as machinery assembly or electronic enclosures, where loosening can lead to operational failures. Its partially threaded design allows for precise clamping force distribution, making it ideal for securing components without compromising material integrity. By meeting NAS1801-04-5 specifications, it provides a trusted solution for engineers seeking durability and regulatory compliance in heavy-duty fasteners.
Specification Summary & Compliance
This screw adheres to Class 3A thread fit tolerances for precise engagement, with UNC coarse threads in a 4-40 size and a minimum thread length of 1/4". It conforms to NAS1801-04-5 manufacturing standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability.
