S-92245A944 5/16"-24 x 1 1/8" FF-S-85, MS35308-335 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, ideal for harsh industrial environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B74 hardness for reliable load-bearing performance
• Precise thread engagement through Class 2A thread fit and UNF fine threading, ensuring secure fastening in critical applications
• Optimized partial threading design provides enhanced grip in specific material thicknesses while reducing installation time
• Easy installation and removal with external hex drive and standard 1/2" head width, compatible with common wrench tools
• Regulatory compliance assurance meeting Fed. Spec. FF-S-85 (MS35308-335), RoHS 3, and REACH standards for global industrial use
• Dimensional consistency with 1-1/8" length and controlled thread geometry for repeatable assembly performance

Professional Applications & Engineering Value

This 5/16"-24 UNF hex head screw delivers critical engineering solutions where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making it ideal for marine equipment, food processing machinery, and outdoor industrial applications. The fine thread configuration offers superior vibration resistance compared to coarse threads, while the partial threading design concentrates engagement strength where needed most. With its external hex drive and standardized dimensions, this fastener enables efficient maintenance and assembly operations across manufacturing, aerospace, and heavy equipment sectors where 70,000 psi tensile strength ensures long-term reliability under dynamic loads.

Specification Summary & Compliance

Manufactured to precise dimensional standards including Class 2A thread fit tolerance and UNF thread form with 5/16"-24 specification. Complies with Fed. Spec. FF-S-85 (MS35308-335) for quality assurance and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The partial threading extends 7/8" minimum with controlled Rockwell B74 hardness for consistent performance across production batches.