S-92245A661 3/8"-24 x 2" FF-S-85, MS35308-366 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 for extended service life in harsh environments
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration
• Fine UNF thread design provides superior holding power and resistance to loosening compared to coarse threads
• External hex drive with 9/16" head width allows for high torque application and easy installation with standard tools
• Partially threaded shank design concentrates thread engagement where needed most for optimal clamping force
• Class 2A thread fit guarantees consistent, reliable assembly with standard mating components
• Rockwell B74 hardness rating maintains thread integrity and prevents stripping during repeated use

Professional Applications & Engineering Value

This 3/8"-24 UNF hex head screw delivers exceptional engineering value through its passivated 18-8 stainless steel construction, providing critical corrosion resistance for industrial applications exposed to moisture, chemicals, and outdoor elements. The fine thread configuration offers superior vibration resistance compared to coarse threads, making it ideal for machinery, equipment assembly, and structural applications where maintaining precise clamping force is essential. The partially threaded design ensures maximum thread engagement occurs precisely where clamping force is required, preventing material distortion in sensitive applications. With its external hex drive and substantial head dimensions, this fastener accommodates high torque installation while resisting cam-out, delivering reliable performance in heavy-duty fastening scenarios across manufacturing, construction, and industrial maintenance sectors.

Specification Summary & Compliance

This 2" length hex head screw features precision 3/8"-24 UNF fine threads with Class 2A thread fit tolerances, ensuring consistent mating with standard components. Manufacturing compliance includes Fed. Spec. FF-S-85 (MS35308-366) certification, guaranteeing consistent quality and performance. The fastener meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) standards for chemical safety, making it suitable for regulated industries and international markets requiring stringent environmental compliance.