WIDIA GTD Straight Flute Tap: 7/16"-20 UNF, H5, 4 Flute, Bottoming Chamfer
The WIDIA GTD Straight Flute Tap (7/16"-20 UNF) is a general-purpose hand tap with an H5 tolerance, bottoming chamfer, and 4 flutes, made from high-speed steel (MPN 14257). 3G Electric interprets this demand and…
SKU 3G-OTH-221815
Need installation or engineering help?
Ask a question
Product Description
The WIDIA GTD Straight Flute Tap (7/16"-20 UNF) is a general-purpose hand tap with an H5 tolerance, bottoming chamfer, and 4 flutes, made from high-speed steel (MPN 14257). 3G Electric interprets this demand and sources the exact OEM-specified tool, supporting your machining operations across 14 industrial departments with specialist depth in cutting tools and controls.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is a WIDIA GTD straight flute tap used for?
A WIDIA GTD straight flute tap is used for cutting internal threads in pre-drilled holes. This 7/16"-20 UNF bottoming chamfer tap is ideal for through-hole or blind-hole threading in general machining, automotive, and industrial maintenance applications.
What are the specifications of the WIDIA GTD 14257 tap?
The WIDIA GTD 14257 is a 7/16"-20 UNF straight flute tap with an H5 tolerance, 4 flutes, and a bottoming chamfer. It is made from high-speed steel and is designed for general-purpose hand tapping in ferrous and non-ferrous materials.
Where to buy WIDIA GTD taps in worldwide?
3G Electric supplies WIDIA GTD taps worldwide. As a global industrial sourcing partner, we handle full logistics and customs clearance to deliver this 7/16"-20 UNF bottoming chamfer tap and other WIDIA cutting tools to your facility, regardless of location.
How to select the right tap for a blind hole?
For blind holes, choose a bottoming chamfer tap like this WIDIA GTD 14257, which has a short chamfer length to thread close to the hole bottom. Ensure the tap size matches the thread specification (7/16"-20 UNF) and that the material is suitable for high-speed steel tooling.
Used in
Common applications for WIDIA GTDWIDIA GTD Products
3G Electric supplies WIDIA GTD general purpose hand taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















