S-93310A240 10-24 x 3/8" ASME B18.3, ASTM F879, MIL-DTL-18240 Thread-Locking Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with permanent Nylon Patch thread locker ensures reliable fastening in high-stress environments, maintaining integrity from -70° to 250° F.
• Superior corrosion resistance from 18-8 Stainless Steel construction extends service life in harsh industrial or outdoor applications.
• High tensile strength of 70,000 psi provides exceptional load-bearing capacity, reducing the risk of fastener failure under heavy loads.
• Precision Class 3A thread fit with UNC coarse threading ensures easy installation and secure engagement, minimizing cross-threading issues.
• Hex drive design allows for high-torque application with standard tools, speeding up assembly and disassembly processes.
• Rounded button head profile offers a low-profile, aesthetically pleasing finish while reducing snagging risks in confined spaces.
• Full compliance with ASME, ASTM, and MIL standards guarantees consistent quality and interoperability in regulated industries.

Professional Applications & Engineering Value

Engineered for demanding environments, these 10-24 UNC Rounded Head Screws address critical challenges in machinery, electronics, and automotive assemblies where vibration loosening is a common failure point. The 18-8 Stainless Steel material provides excellent resistance to rust and chemical exposure, ideal for outdoor or humid conditions. Combined with the Nylon Patch thread locker, the screws deliver permanent locking without requiring additional adhesives, streamlining installation while ensuring joint integrity across a wide temperature range. The coarse UNC threads and Class 3A fit enhance grip in softer materials or where rapid assembly is needed, reducing downtime. These features make them a reliable choice for OEMs and maintenance teams seeking durability, regulatory compliance, and reduced lifecycle costs.

Specification Summary & Compliance

This screw features a 10-24 UNC coarse thread with Class 3A precision fit for consistent engagement and strength. It is manufactured in compliance with ASME B18.3, ASTM F879, and MIL-DTL-18240 specifications, ensuring adherence to industrial standards. The product is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, supporting use in environmentally conscious and regulated markets. Dimensions include a 3/8" length, 0.361" head diameter, and 1/8" hex drive for precise application.