S-92805A727 3/8"-16 x 1 1/4" ASME B18.3, ASTM F879, MIL-DTL-18240 Stainless Steel Thread-Locking Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with permanent nylon patch ensures reliable fastening in high-stress environments, maintaining integrity from -65° to 250° F
• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh or outdoor industrial settings
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding mechanical applications
• Efficient torque transmission via 7/32" hex drive, reducing tool slippage and enabling precise installation
• Secure thread engagement with Class 3A UNC coarse threads, providing excellent pull-out resistance and easy alignment
• Flush mounting capability with 82° countersink angle and flat head design for streamlined surfaces and reduced snagging
• Full-threaded design ensures maximum grip along the entire 1-1/4" length, enhancing load distribution

Professional Applications & Engineering Value

This nylon patch locking flat head screw addresses critical challenges in industrial assembly, such as vibration-induced loosening and corrosion degradation. Crafted from 18-8 stainless steel, it resists rust and chemical exposure, making it suitable for machinery, automotive, and marine applications. The UNC coarse thread and Class 3A fit deliver rapid installation and robust holding power, while the hex drive ensures high-torque application without cam-out. Its nylon patch locking technology provides a permanent seal that withstands thermal cycling from -65° to 250° F, eliminating the need for secondary adhesives. Ideal for securing components in vibrating equipment, enclosures, and structural frameworks where reliability is non-negotiable.

Specification Summary & Compliance

This screw features precise Class 3A thread fit and UNC coarse threading (3/8"-16) with full threading along the 1-1/4" length. Manufactured in compliance with ASME B18.3, ASTM F879, and MIL-DTL-18240 specifications, ensuring dimensional accuracy and performance consistency. It is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety standards for global industrial use.