S-93310A807 M4 x 12 mm MIL-DTL-18240 Thread-Locking Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking: Integrated nylon patch thread locker ensures secure fastening, preventing loosening under dynamic loads and temperature fluctuations from -70° to 250°F.
• Superior corrosion resistance: Made from 18-8 stainless steel, offering excellent durability in harsh environments and reducing maintenance needs.
• High-strength reliability: With 80,000 psi tensile strength and Rockwell B96 hardness, these screws withstand high stress for long-term assembly integrity.
• Easy installation and removal: 2.5mm hex drive and rounded button head design allow for efficient tool engagement and a low-profile, flush finish.
• Precise thread fit: Class 6g coarse threading ensures consistent engagement and reduces cross-threading risks in metric applications.
• Full-threaded efficiency: Fully threaded M4 x 0.7mm design provides maximum grip along the entire length, enhancing load distribution.
• Regulatory compliance assurance: Meets MIL-DTL-18240 specifications and is RoHS 3/REACH compliant, ensuring safety and environmental standards.

Professional Applications & Engineering Value

This M4 metric screw with a nylon patch thread locker is engineered to address critical challenges in industrial assemblies where vibration and thermal cycling are common. The 18-8 stainless steel construction provides inherent corrosion resistance, making it ideal for applications in electronics, automotive, and machinery exposed to moisture or chemicals. The hex drive and rounded button head facilitate quick installation in tight spaces while maintaining a sleek profile. With a coarse 0.7mm pitch and Class 6g thread fit, it ensures rapid assembly and reduces the risk of stripping, enhancing productivity in high-volume manufacturing. Fully threaded for uniform stress distribution, this screw delivers reliable performance in securing components like panels, brackets, and enclosures, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This screw features precise metric threading (M4 x 0.7mm) with a Class 6g tolerance for consistent fit. It complies with MIL-DTL-18240 manufacturing standards and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring no hazardous substances. The fully threaded design and nylon patch locking provide secure fastening across a temperature range of -70° to 250°F.