WIDIA GTD Pipe and Conduit Thread Tap: 3/8"-18 NPS, D6, 4 Flute
SKU 3G-OTH-266008
Need installation or engineering help?
Ask a question
Frequently Asked Questions
What is a WIDIA GTD 3/8"-18 NPS pipe tap used for?
This WIDIA GTD pipe tap is used to cut National Pipe Straight (NPS) threads in pipe and conduit for mechanical joints and electrical fittings. It is ideal for general-purpose threading in steel, stainless steel, and non-ferrous materials across industrial maintenance, plumbing, and electrical applications.
What are the specifications of the WIDIA GTD 16357 pipe tap?
The WIDIA GTD 16357 is a 3/8"-18 NPS pipe tap with a D6 modified bottoming chamfer and 4 flutes. It is designed for through-hole or blind-hole threading in pipe and conduit. The D6 geometry provides chip clearance and thread finish suitable for general-purpose use.
Where to buy WIDIA GTD pipe taps worldwide?
3G Electric supplies WIDIA GTD pipe taps like the 16357 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact our team for a quote and lead time on this and other WIDIA threading tools across our 14 industrial departments.
How to select the correct WIDIA GTD pipe tap for NPS threads?
Select a WIDIA GTD pipe tap by matching the thread size (e.g., 3/8"-18 NPS) and chamfer type to your application. A modified bottoming chamfer like the D6 works for blind holes, while taper chamfers suit through-holes. Always verify material hardness and use appropriate cutting fluid for best thread quality.
Used in
Common applications for WIDIA GTDWIDIA GTD Products
3G Electric supplies WIDIA GTD general purpose pipe taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.












