S-92210A626 3/8"-16 x 1 1/4" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
• Precise, secure fastening ensured by Class 3A thread fit and UNC coarse threading for vibration resistance
• Efficient installation and flush seating with standard 82° countersink angle and 7/32" hex drive for easy torque application
• Full-thread engagement along the 1-1/4" length provides maximum grip and distribution of stress
• Compliance with industry standards including ASME B18.3, ensuring interchangeability and quality assurance
• Environmental and safety compliance with RoHS 3 and REACH, suitable for regulated industrial applications

Professional Applications & Engineering Value

These 3/8"-16 UNC flat head screws are engineered to address critical challenges in industrial assembly, such as material degradation under stress and environmental exposure. The 18-8 stainless steel composition, combined with a passivated finish, provides outstanding resistance to corrosion, making them ideal for machinery, marine equipment, and outdoor structures. The hex drive and 82° countersink angle allow for quick, flush installation in pre-drilled holes, reducing assembly time while maintaining a clean profile. With coarse threading and Class 3A fit, these screws offer superior holding power in soft materials or where vibration is a concern, preventing loosening and ensuring long-term reliability in heavy-duty applications.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including Class 3A thread fit and UNC coarse thread spacing for consistent performance. It meets ASME B18.3 specifications for flat head screws, ensuring dimensional accuracy and interchangeability. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms its suitability for use in regulated industries, free from hazardous substances. The fully threaded design and specified hardness (Rockwell B55) further support its application in high-stress environments.