S-92245A561 1/4"-28 x 1/2" FF-S-85, MS35308-303 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
- Exceptional corrosion resistance with passivated 18-8 stainless steel construction for long service life in harsh environments
- Superior tensile strength rated at 70,000 PSI ensures reliable performance under high-stress applications
- Precision Class 2A thread fit provides consistent engagement and reduces cross-threading risks during assembly
- External hex drive design delivers maximum torque transfer and secure installation with standard tools
- Full threading along the 1/2" length offers complete fastening coverage and enhanced holding power
- Fine UNF thread spacing maintains superior vibration resistance in dynamic industrial equipment
- Comprehensive regulatory compliance meets Fed. Spec. FF-S-85, RoHS 3, and REACH for global supply chain compatibility
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 1/4"-28 UNF hex head screws provide critical solutions where vibration resistance and corrosion protection are paramount. The passivated 18-8 stainless steel construction withstands corrosive environments while maintaining structural integrity, making them ideal for machinery, automotive assemblies, and marine equipment. The fine thread spacing and Class 2A thread fit ensure precise alignment and secure fastening in high-vibration settings, reducing maintenance frequency and downtime. With external hex drive compatibility, installation becomes efficient using standard industrial tools, streamlining assembly processes across manufacturing and maintenance operations.
Specification Summary & Compliance
This hex head screw features precision Class 2A thread fit with 1/4"-28 UNF fine threading and right-hand direction. Manufacturing complies with Fed. Spec. FF-S-85 (MS35308-303) ensuring consistent 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.
