S-92245A682 5/16"-18 x 1/2" FF-S-85, MS35307-329 Mil. Spec. 18-8 Stainless Steel Hex Head Screws
Mil. Spec. 18-8 Stainless Steel Hex Head 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
- Superior corrosion resistance with Passivated 18-8 Stainless Steel construction, ideal for harsh environments and extended service life.
- High tensile strength of 70,000 PSI ensures reliable performance under heavy loads and mechanical stress.
- Class 2A thread fit provides consistent, easy assembly and secure fastening with standard UNC coarse threads.
- Fully threaded design maximizes grip and holding power across the entire 1/2" length for versatile applications.
- External hex drive allows for high-torque installation using common tools, speeding up assembly processes.
- Compliance with Fed. Spec. FF-S-85 (MS35307-329) guarantees adherence to strict federal standards for quality and reliability.
- RoHS 3 and REACH compliant for environmentally safe use in regulated industries and global markets.
Professional Applications & Engineering Value
This 5/16"-18 UNC Hex Head Screw is engineered to address critical challenges in industrial settings where corrosion resistance and mechanical integrity are paramount. Made from Passivated 18-8 Stainless Steel, it effectively combats rust and chemical degradation in demanding environments such as marine, chemical processing, and outdoor infrastructure. The coarse UNC thread and Class 2A thread fit ensure quick, reliable installation with reduced risk of cross-threading, while the fully threaded design provides uniform clamping force. With a tensile strength of 70,000 PSI and Rockwell B74 hardness, it delivers dependable performance in high-stress applications, from machinery assembly to structural frameworks, minimizing downtime and maintenance costs.
Specification Summary & Compliance
This screw features a 5/16"-18 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy and ease of assembly. It meets Fed. Spec. FF-S-85 (MS35307-329) for quality assurance and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.
