S-93802A521 6-32 x 1/4" MIL-DTL-18240, MS3212-11L, NASM3212, NASM82496 Sealing Thread-Locking Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated silicone O-ring provides reliable fluid sealing up to 6000 psi, preventing leaks in demanding environments.
• Vibration-Resistant Locking: Nylon patch thread locker maintains secure fastening from -40° to 225°F, reducing maintenance needs in high-vibration applications.
• Corrosion-Resistant Durability: 18-8 stainless steel construction with passivated finish ensures long-term reliability in harsh or humid conditions.
• Broad Temperature Compatibility: O-ring functions from -80° to 400°F, making it suitable for extreme thermal cycling in aerospace and industrial settings.
• High Tensile Strength: 70,000 psi tensile strength provides robust mechanical performance for critical assembly requirements.
• Precision Thread Engagement: UNC coarse threads with Class 2A fit ensure easy installation and consistent clamping force.
• Industry Standard Compliance: Meets MIL-DTL-18240, NASM3212, and MS3212-11L specifications for guaranteed quality in regulated applications.

Professional Applications & Engineering Value

This 6-32 UNC rounded head screw combines multiple sealing and locking technologies to address critical challenges in aerospace, industrial machinery, and fluid systems. The 18-8 stainless steel base material provides excellent corrosion resistance, while the nylon patch thread locker prevents loosening under vibration—a common failure point in dynamic equipment. The silicone O-ring creates a positive seal against fluids and gases, making it ideal for hydraulic systems, pressurized enclosures, and environmental sealing applications. With full threading and Phillips drive design, installation is streamlined without compromising the 6000 psi pressure rating, ensuring reliable performance where safety and leak prevention are paramount.

Specification Summary & Compliance

This screw features 6-32 UNC coarse threads with Class 2A fit for standard hole diameters up to 0.15". It complies with MIL-DTL-18240 (including MS3212-11L and NASM3212 references), ensuring adherence to rigorous aerospace and defense standards. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for global industrial use.