S-93310A194 8-32 x 1/2" ASME B18.3, ASTM F879, MIL-DTL-18240 Thread-Locking Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance with nylon patch locking that maintains secure fastening under extreme conditions
• Superior corrosion resistance from 18-8 stainless steel construction for long-term reliability in harsh environments
• High-strength performance with 70,000 psi tensile strength to withstand heavy mechanical loads
• Wide temperature tolerance from -70° to 250°F for stable operation across diverse industrial settings
• Precision Class 3A thread fit ensuring consistent engagement and reduced risk of cross-threading
• Easy installation and removal with standard 3/32" hex drive for efficient maintenance operations
• Industry-standard compliance meeting rigorous ASME, ASTM, and military specifications for quality assurance

Professional Applications & Engineering Value

This 8-32 UNC nylon patch lock screw delivers critical vibration resistance where conventional fasteners fail. The permanent nylon patch locking technology creates consistent friction along the coarse UNC threads, preventing loosening in high-vibration machinery, automotive assemblies, and industrial equipment. Manufactured from 18-8 stainless steel, it provides excellent corrosion resistance while maintaining 70,000 psi tensile strength for demanding applications. The rounded button head design with hex drive offers both aesthetic appeal and practical installation advantages, making these locking screws ideal for precision assemblies requiring reliable, maintenance-free fastening solutions.

Specification Summary & Compliance

Features Class 3A thread fit with UNC coarse threading and right-hand direction. Dimensions include 1/2" length, 0.312" head diameter, and 3/32" hex drive. Fully compliant with ASME B18.3, ASTM F879, and MIL-DTL-18240 specifications. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use.