S-90935A131 Length 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel coating, extending service life in demanding industrial environments.
• Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and tooling costs.
• Full threading and pointed tip ensure maximum grip and easier penetration, providing reliable fastening in thin materials.
• Phillips pan head design offers secure driving with common tools and a low-profile finish for clean aesthetic applications.
• Precision compatibility with No. 44 drill bits (0.086" diameter) for accurate hole preparation, minimizing material stress.
• Right-hand thread and standardized dimensions ensure consistent performance and interchangeability in assembly lines.
• Compliant with major environmental regulations including RoHS 3 and REACH, making them suitable for global supply chains.

Professional Applications & Engineering Value

These No. 4-24 thread forming screws are specifically engineered for sheet metal applications, where traditional fasteners may strip or loosen under vibration. The black-oxide steel construction provides a durable, corrosion-resistant finish that withstands harsh conditions without additional plating. The A/AB tapping screw type and fully threaded design allow the screw to form its own mating thread as it's driven, eliminating the need for tapped holes and reducing assembly steps. This is particularly valuable in high-volume metalworking and HVAC installations, where speed and reliability are critical. The Phillips drive ensures common tool compatibility, while the pan head sits flush to prevent snagging. Ideal for joining thin gauge metals up to 0.025" thick, these screws deliver consistent clamp force and vibration resistance, minimizing maintenance and improving product longevity.

Specification Summary & Compliance

This tapping screw adheres to standard inch measurements with a thread diameter of 0.112" and 24 threads per inch, ensuring precise fit in pre-drilled holes. The thread forming method and right-hand thread direction follow industrial norms for reliable performance. Manufactured from high-strength steel with a black-oxide finish, it meets general purpose Class 2A thread tolerance for consistent engagement. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms the absence of restricted substances, supporting use in regulated industries and international markets.