S-90190A120 Length 7/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in demanding industrial environments
• Effortless installation through thread-forming design that creates strong, permanent threads in sheet metal without pre-tapping
• Enhanced driving efficiency with Phillips No. 1 drive system, providing reliable torque transfer and reduced cam-out risk
• Maximum material engagement with fully threaded design and pointed tip for quick starting and secure fastening throughout the entire length
• Optimized for thin materials with 0.112" thread diameter and 24 TPI configuration, specifically engineered for sheet metal applications up to 0.025" thickness
• Broad compatibility with standard No. 44 drill bits (0.086" diameter), simplifying installation processes and reducing tooling requirements
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing and global market acceptance

Professional Applications & Engineering Value

These zinc-plated steel tapping screws deliver exceptional value in sheet metal fabrication and assembly operations. The thread forming design eliminates the need for separate tapping operations, reducing installation time and labor costs while creating stronger thread engagement than conventional fastening methods. The Phillips pan head configuration with standard rounded profile ensures consistent seating and professional appearance in finished products. Engineered with fully threaded construction and pointed tip, these screws provide immediate engagement and maintain secure fastening throughout the entire 7/8" length, making them ideal for HVAC systems, electronic enclosures, automotive components, and industrial equipment where vibration resistance and reliable performance are critical.

Specification Summary & Compliance

This No. 4-24 x 7/8" tapping screw features precise Class 2A thread tolerances with right-hand threading and 24 threads per inch configuration. The fastener meets industry-standard thread forming specifications (Type A/AB) for sheet metal applications and is compatible with standard No. 44 drill bits (0.086" diameter). Manufacturing compliance includes full adherence to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets and applications requiring restricted substance control.