S-92245A574 1/4"-28 x 2" FF-S-85, MS35308-314 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 under heavy loads and vibration
- Precise Class 2A thread fit provides consistent engagement and reduces cross-threading risks
- External hex drive design enables high-torque installation with standard tools for efficient assembly
- Partially threaded shank allows for secure clamping without unnecessary thread engagement
- Fine UNF thread spacing delivers better tension control in precision applications
- Full regulatory compliance with RoHS 3 and REACH standards for global market acceptance
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 1/4"-28 UNF hex head screws provide exceptional reliability in machinery assembly, equipment manufacturing, and structural frameworks. The passivated 18-8 stainless steel offers superior corrosion resistance, critical for outdoor applications or environments exposed to moisture and chemicals. The fine thread spacing and Class 2A thread fit ensure precise tension control and vibration resistance, preventing loosening in dynamic systems. With external hex drive compatibility, installation becomes efficient using standard industrial tools, while the partially threaded design concentrates clamping force exactly where needed. These features combine to reduce maintenance frequency and extend service life in critical assemblies.
Specification Summary & Compliance
This hex head screw maintains precise Class 2A thread fit per UNF standards with 1/4"-28 fine thread spacing and right-hand threading. Manufacturing conforms to Fed. Spec. FF-S-85 (MS35308-314) ensuring consistent quality and dimensional accuracy. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting international environmental and safety standards for industrial components.
