S-90399A153 Length 1" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-phosphate steel construction for extended service life in demanding industrial environments
• Enhanced load distribution through wide truss head design and integrated flat steel washer, preventing surface damage and improving joint integrity
• Efficient thread forming capability with A/AB thread design that creates strong, permanent threads in sheet metal without pre-tapping requirements
• Secure installation and reduced cam-out with No. 2 Phillips drive that ensures proper torque transfer and minimizes tool slippage
• Optimized for thin materials with maximum 0.025" drilling thickness compatibility, making them ideal for various sheet metal applications
• Full-thread engagement along the entire 1" length provides maximum pull-out resistance and vibration resistance in assembled components
• Precision compatibility with standard No. 32 drill bits (0.116" diameter) for streamlined installation processes and reduced preparation time

Professional Applications & Engineering Value

These No. 6 x 1" Phillips Truss Head tapping screws deliver exceptional engineering value in sheet metal applications where vibration resistance and permanent fastening are critical. The A/AB thread forming design eliminates the need for separate tapping operations, as the screws create their own precisely formed threads in the base material, resulting in superior holding power compared to conventional fasteners. The combination of black-phosphate steel construction and integrated flat washers addresses common industrial challenges including corrosion prevention and surface damage mitigation. The wide truss head profile distributes clamping force over a larger area, making these thread forming screws ideal for thin-gauge materials where pull-through failure is a concern. This engineering solution streamlines assembly processes while ensuring reliable performance in HVAC systems, electronic enclosures, automotive components, and industrial equipment manufacturing.

Specification Summary & Compliance

These tapping screws feature precise dimensional specifications including 0.138" thread diameter, 18 threads per inch, and Class 2A thread tolerances for consistent performance. The A/AB thread forming design complies with industry standards for self-tapping fasteners, while the black-phosphate surface treatment provides corrosion protection in accordance with industrial requirements. Manufactured to meet rigorous quality standards for sheet metal fasteners, these screws ensure reliable performance in professional applications. The product conforms to relevant industrial specifications for thread forming tapping screws and is compatible with standard No. 32 drill bits (0.116" diameter) for optimal installation results.