CHICAGO-LATROBE Spiral Flute Tap: 1/4"-28 UNF, H3 / 2B, 3 Flute, Plug Chamfer (MPN 282351)

This spiral flute tap is designed for threading blind holes in materials such as steel, stainless steel, and aluminum. Its spiral flute design pulls chips upward and out of the hole, making it ideal for production tapping where chip evacuation is critical. It is commonly used in automotive, aerospace, and general manufacturing applications.

The CHICAGO-LATROBE 282351 is a general purpose spiral flute tap with a 1/4"-28 UNF thread, H3 tolerance for 2B class fit, 3 flutes, and a plug chamfer. It is designed for through-hole or blind-hole tapping in ferrous and non-ferrous materials. The manufacturer part number is 282351.

You can source CHICAGO-LATROBE taps, including the 282351 spiral flute tap, through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this and other cutting tools.

For blind holes, choose a spiral flute tap with a plug chamfer, like the CHICAGO-LATROBE 282351, to ensure chips are lifted out of the hole. Match the tap's thread size (e.g., 1/4"-28 UNF) and tolerance (H3 for 2B fit) to your application. Consider material hardness and tap coating for extended tool life.