CHICAGO-LATROBE Extension Tap: 3/8"-18 NPTF, 4 Flute, Semi-Bottoming Chamfer (MPN 386186)

A CHICAGO-LATROBE Extension Tap is used to cut internal NPTF threads in hard-to-reach areas. It is ideal for pipe fitting, hydraulic systems, and industrial maintenance where standard taps cannot reach. The 4-flute design clears chips efficiently, and the semi-bottoming chamfer allows threading close to the bottom of a blind hole.

The CHICAGO-LATROBE Extension Tap model 386186 has a 3/8"-18 NPTF thread size, 4 flutes, and a semi-bottoming chamfer. It is designed for threading pipe fittings in steel, stainless steel, and other metals. The extension length provides access to recessed areas. Refer to the manufacturer part number for exact dimensions.

You can source the CHICAGO-LATROBE Extension Tap 386186 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time. We supply genuine CHICAGO-LATROBE tooling for industrial applications.

Select the tap based on thread size (e.g., 3/8"-18 NPTF), material type, and hole depth. For blind holes, use a semi-bottoming chamfer like this model. Ensure the tap matches the pipe thread standard (NPTF). CHICAGO-LATROBE taps are designed for ferrous and non-ferrous metals. Consult a technical datasheet for feed and speed recommendations.