S-90055A111 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Exceptional holding power through fully threaded design and thread forming technology that creates stronger, more permanent connections
• Streamlined installation with Phillips No. 1 drive and standard flat head profile for efficient assembly and flush finishing
• Optimal material engagement featuring Type B thread forming design specifically engineered for sheet metal applications
• Precise countersinking capability with 82° head angle that ensures proper seating and professional appearance
• Environmental compliance assurance meeting RoHS 3 standards for safe, regulated manufacturing practices
• Reduced installation complexity with compatible No. 44 drill bit size (0.086" diameter) for straightforward preparation

Professional Applications & Engineering Value

These zinc-plated steel tapping screws deliver exceptional performance in sheet metal applications where vibration resistance and permanent fastening are critical. The thread forming Type B design displaces material rather than removing it, creating stronger threads that won't strip under stress. The fully threaded configuration maximizes contact surface area, distributing load evenly across the entire fastener length. The 82° countersink angle and flat head profile provide flush mounting that eliminates protrusions in confined spaces. Engineered for HVAC systems, electronic enclosures, and industrial equipment assembly, these Phillips drive screws combine installation efficiency with long-term reliability in demanding environments where joint integrity cannot be compromised.

Specification Summary & Compliance

This No. 4-24 x 1/2" tapping screw features inch system measurements with right-hand threading and Class 2A thread fit for standard industrial applications. The thread forming technology conforms to Type B specifications for optimal performance in sheet metal. Manufacturing and material compliance includes RoHS 3 (2015/863/EU) certification, ensuring environmental safety standards are met. The screw is designed for use with No. 44 drill bits (0.086" diameter) and features a blunt tip for controlled starting and fully threaded shank for maximum engagement strength.