S-92805A148 6-32 x 1/2" ASME B18.3, ASTM F879, MIL-DTL-18240 Stainless Steel Thread-Locking Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Permanent vibration-resistant locking with nylon patch thread locker that maintains secure fastening from -65° to 250°F
• Superior corrosion resistance with 18-8 stainless steel construction for long-term reliability in harsh environments
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Precision thread engagement with Class 3A UNC coarse threads ensuring optimal fit and reduced cross-threading risk
• Secure flush mounting with standard flat head profile and 82° countersink angle for smooth surface finishes
• Easy installation and removal with 5/64" hex drive providing positive torque transmission
• Full regulatory compliance meeting ASME B18.3, ASTM F879, MIL-DTL-18240 standards with RoHS 3 and REACH compliance

Professional Applications & Engineering Value

These nylon patch locking flat head screws provide critical vibration resistance in industrial machinery, electronic enclosures, and automotive assemblies where loosening under dynamic loads can compromise safety and performance. The 18-8 stainless steel construction offers exceptional corrosion resistance for outdoor equipment, marine applications, and chemical processing environments. With Class 3A UNC coarse threads, these fasteners ensure rapid installation and reliable engagement in various materials while the nylon patch locking technology creates a permanent chemical bond that withstands thermal cycling from -65° to 250°F. The combination of 70,000 psi tensile strength and fully threaded design delivers maximum clamping force distribution, making these screws ideal for critical structural applications requiring consistent preload maintenance.

Specification Summary & Compliance

Manufactured to ASME B18.3, ASTM F879, and MIL-DTL-18240 specifications with Class 3A thread fit precision. Features UNC 6-32 coarse threads with 1/2" length and standard 82° countersink angle. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The nylon patch thread locker provides permanent locking capability across the specified temperature range of -65° to 250°F.