S-92245A967 1/2"-20 x 3" FF-S-85, MS35308-419 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 industrial environments.
- High tensile strength of 70,000 PSI ensures reliable performance in heavy-duty applications.
- Class 2A thread fit provides consistent assembly and interchangeability with standard UNC nuts.
- Partially threaded design allows for precise clamping force and secure fastening in structural joints.
- External hex drive and 3/4" head width enable easy installation with common wrenches, reducing assembly time.
- Coarse UNC threading offers quick engagement and resistance to vibration loosening.
- Compliance with Fed. Spec. FF-S-85 (MS35308-419) guarantees adherence to rigorous industrial standards.
Professional Applications & Engineering Value
This 1/2"-20 UNC hex head screw is engineered for demanding applications where durability and reliability are critical. The passivated 18-8 stainless steel provides excellent corrosion resistance, making it suitable for outdoor machinery, marine equipment, and chemical processing plants. Its partially threaded configuration ensures optimal load distribution, reducing stress concentration and preventing joint failure. With a coarse thread and external hex drive, it simplifies installation in tight spaces and maintains integrity under high vibration. Ideal for construction, automotive, and heavy equipment assemblies, this screw delivers long-term performance and minimizes maintenance needs.
Specification Summary & Compliance
This screw features a 1/2"-20 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy. It meets Fed. Spec. FF-S-85 (MS35308-419) and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material quality. Manufactured to uphold 70,000 PSI tensile strength and Rockwell B80 hardness, it supports consistent performance in industrial fastening applications.
