S-90398A199 Length 1" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with chrome-plated steel construction for extended service life in demanding environments
• Enhanced load distribution through the wide truss head design with integrated steel washer, reducing material stress
• Efficient thread-forming installation creates strong, permanent threads in sheet metal without pre-tapping
• Optimized drilling compatibility with No. 29 drill bit specification for precise, clean hole preparation
• Maximum material engagement with fully threaded 1" length and 15 TPI design for superior holding power
• Reliable fastening performance in materials up to 0.025" thickness, ideal for various sheet metal applications
• Streamlined installation with Phillips No. 2 drive and pointed tip for quick starting and secure fastening

Professional Applications & Engineering Value

This chrome-plated steel tapping screw delivers exceptional value in sheet metal fabrication and assembly operations. The thread forming design eliminates the need for separate tapping operations, significantly reducing installation time and labor costs. The A/AB tapping screw type with fully threaded construction ensures maximum thread engagement in thin materials, preventing stripping and maintaining vibration resistance. The integrated flat washer with the wide truss head provides superior clamping force distribution, preventing material deformation in delicate sheet metal applications. Engineered for precision, these industrial screws work seamlessly with No. 29 drill bits (0.136" diameter) to create perfect mating threads in materials up to 0.025" thickness, making them ideal for HVAC systems, electronic enclosures, and construction panels where reliability and efficiency are paramount.

Specification Summary & Compliance

This No. 8 x 1" Phillips Truss Head Tapping Screw features precise 0.164" thread diameter with 15 TPI right-hand threads and Class 2A thread tolerances. Manufactured to A/AB tapping screw standards with thread forming technology for superior performance. The fastener includes a 1/2" OD steel flat washer integrated with the chrome-plated steel construction, ensuring compliance with industrial fastening specifications. Compatible with No. 29 drill bit (0.136" diameter) for optimal hole preparation in sheet metal applications up to 0.025" maximum thickness.