S-92245A942 5/16"-24 x 5/8" FF-S-85, MS35308-331 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 load-bearing capacity and joint integrity under stress
- Precise Class 2A thread fit provides smooth assembly and consistent clamping force in fine-thread applications
- External hex drive design allows for high-torque installation with standard tools, reducing installation time
- Full threading along 5/8" length offers maximum grip range and versatility across material thicknesses
- Compliance with Fed. Spec. FF-S-85 (MS35308-331) guarantees consistent quality and interchangeability
- Rockwell B74 hardness maintains thread form and drive integrity through repeated use
Professional Applications & Engineering Value
This 5/16"-24 UNF hex head screw delivers critical performance in demanding applications where corrosion resistance and mechanical strength are paramount. The passivated 18-8 stainless steel material provides excellent protection against oxidation and chemical exposure, making it suitable for marine, chemical processing, and outdoor equipment. The fine UNF thread with Class 2A fit ensures vibration resistance and precise tension control in machinery, automotive assemblies, and precision instruments. Its fully threaded design and external hex drive enable quick, secure fastening in confined spaces, reducing assembly errors and maintenance downtime for industrial operators.
Specification Summary & Compliance
Manufactured to exact Class 2A thread tolerances per UNF standards, this screw meets Fed. Spec. FF-S-85 (MS35308-331) for dimensional consistency. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability. The screw features a right-hand thread direction, 5/8" length, and fine thread spacing, engineered for reliable performance in regulated industrial applications.
