S-92245A936 1/4"-28 x 2 1/4" FF-S-85, MS35308-315 Mil. Spec. 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B74 hardness for heavy-duty load-bearing applications
• Precise fine threading (1/4"-28 UNF) with Class 2A fit for secure fastening and vibration resistance in critical assemblies
• Optimized partial threading design providing enhanced grip length while maintaining installation efficiency
• Industry-standard compliance meeting Fed. Spec. FF-S-85 (MS35308-315) for guaranteed dimensional accuracy and performance
• Environmental regulation adherence with RoHS 3 and REACH compliance for safe use across global markets
• Versatile external hex drive allowing for high-torque installation with standard tools in confined spaces

Professional Applications & Engineering Value

These 1/4"-28 UNF hex head screws deliver critical performance advantages in demanding industrial environments where corrosion resistance and mechanical integrity are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against chemical exposure and atmospheric corrosion, making these industrial hex bolts ideal for marine equipment, food processing machinery, and outdoor structural applications. The fine thread configuration ensures superior vibration resistance compared to coarse threads, while the partial threading design maximizes engagement depth without compromising installation speed. Engineered to Fed. Spec. FF-S-85 standards (MS35308-315), these corrosion resistant fasteners maintain dimensional consistency across production batches, reducing assembly issues and replacement costs in high-volume manufacturing operations.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with 1/4"-28 UNF fine threading in accordance with Fed. Spec. FF-S-85 (MS35308-315). These inch system screws feature partial threading with minimum 3/4" thread length and are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The external hex drive configuration (7/16" head width) ensures compatibility with standard industrial tools for efficient installation.