WIDIA GTD Spiral Flute Tap: 7/16"-20 UNF, H5 / 2B, 3 Flute, Bottoming Chamfer
The WIDIA GTD Spiral Flute Tap (7/16"-20 UNF) is a general-purpose tap with an H5 / 2B tolerance, bottoming chamfer, black oxide cobalt finish, and 3 flutes (MPN 5390247). 3G Electric interprets demand and sources…
SKU 3G-OTH-230613
Need installation or engineering help?
Ask a question
Product Description
The WIDIA GTD Spiral Flute Tap (7/16"-20 UNF) is a general-purpose tap with an H5 / 2B tolerance, bottoming chamfer, black oxide cobalt finish, and 3 flutes (MPN 5390247). 3G Electric interprets demand and sources this genuine industrial cutting tool across 14 departments — with specialist depth in combustion, pumps, and controls — ensuring you get the right answer, not just a catalog.
Frequently Asked Questions
What is the WIDIA GTD spiral flute tap used for?
The WIDIA GTD spiral flute tap is used for threading blind holes in ferrous and non-ferrous materials. Its spiral flute design evacuates chips upward, making it ideal for bottoming chamfer applications where chip clearance is critical. Common industries include automotive, aerospace, and general manufacturing.
What are the specifications of the WIDIA GTD spiral flute tap 5390247?
The WIDIA GTD spiral flute tap (MPN 5390247) has a thread size of 7/16"-20 UNF, with an H5 tolerance for 2B class fit. It features 3 flutes, a bottoming chamfer, and a black oxide cobalt finish for wear resistance. It is designed for general-purpose threading in steel and cast iron.
Where to buy WIDIA GTD taps in worldwide?
You can source WIDIA GTD taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the 5390247 spiral flute tap.
How to select the correct WIDIA GTD tap for a blind hole?
For blind holes, choose a spiral flute tap like the WIDIA GTD 5390247 with a bottoming chamfer to thread close to the hole bottom. Ensure the tap's thread size (7/16"-20 UNF) and tolerance (H5) match your required class of fit. Use appropriate cutting fluid for the workpiece material.
Used in
Common applications for WIDIA GTDWIDIA GTD Products
3G Electric supplies WIDIA GTD general purpose spiral-flute taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















