S-92245A937 1/4"-28 x 2 1/2" FF-S-85, MS35308-316 Mil. Spec. 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• High tensile strength of 70,000 psi provides exceptional load-bearing capacity for demanding industrial applications
• Rockwell B74 hardness delivers excellent wear resistance and durability under repetitive stress
• External hex drive design enables secure tool engagement and efficient installation with standard wrenches
• Fine UNF thread pattern offers superior vibration resistance and precise fastening in critical assemblies
• Partially threaded configuration allows for optimal clamping force distribution across joined materials
• Comprehensive regulatory compliance including RoHS 3 and REACH ensures environmental and safety standards are met

Professional Applications & Engineering Value

This 1/4"-28 UNF hex head screw delivers exceptional engineering value through its passivated 18-8 stainless steel composition, specifically engineered to combat corrosion in challenging industrial environments. The fine UNF thread configuration provides superior resistance to vibrational loosening, making it ideal for machinery, equipment manufacturing, and structural applications where maintaining precise clamp load is critical. The partially threaded design concentrates clamping force exactly where needed, preventing material distortion while the external hex drive ensures reliable installation torque transmission. Meeting Fed. Spec. FF-S-85 (MS35308-316), this fastener solves common industrial pain points including chemical exposure, high-stress conditions, and regulatory compliance requirements across multiple sectors.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with UNF fine threading (1/4"-28), this hex head screw maintains dimensional accuracy per industry standards. The fastener complies with Fed. Spec. FF-S-85 MS35308-316 manufacturing specifications and demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring strict material restrictions and safety standards.