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Carbon Steel Tap Taper Type 7/8-9 (1pc)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Pouch
- Product Family:
- Electrical Supplies
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
Metallics 789CTT – Frequently Asked Questions
1) What thread does the Metallics 789CTT tap cut?
The 789CTT cuts a 7/8-9 thread, meaning 7/8 inch nominal diameter at 9 threads per inch, which is the UNC coarse pitch for that size. It is a taper type tap in carbon steel, sold one piece to a pouch.
2) What size drill hole do I need before running a 7/8-9 tap?
For 7/8-9 UNC the standard tap drill is 49/64 inch, giving roughly 75 percent thread. Drill that first, then start the 789CTT taper tap square to the surface and back it off periodically to clear chips.
3) What is a taper tap used for versus a plug or bottoming tap?
A taper tap has a long chamfer across several leading threads, so it starts easily and self-aligns in the hole. That is what you want for a through hole or for starting a thread by hand, which is the common case when threading strut, channel, or an enclosure wall for a rod hanger. It will not carry threads to the bottom of a blind hole; a bottoming tap does that. The Metallics 789CTT is the taper type in 7/8-9.
4) Will the 789CTT tap stainless steel or hardened material?
It is a carbon steel tap, which suits mild steel, aluminum, and brass. Carbon steel dulls fast in stainless or hardened stock, so for those materials step up to a high speed steel tap in the same 7/8-9 thread.
5) Is the Metallics 789CTT sold individually or in a set?
One tap per pouch. The 789CTT covers the 7/8-9 taper only, so if a job needs plug or bottoming taps in that size, or other thread sizes, those are separate items.
6) Can I use the 789CTT to chase damaged 7/8-9 threads on installed anchors or rod?
Yes, cleaning up buggered threads is a normal use for a taper tap, and the long lead makes it easy to pick up existing threads without cross-threading. Just note that a carbon steel tap is happiest in mild steel; on a hardened anchor it will wear quickly.
How fast can I get the Metallics 789CTT delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Metallics 789CTT come with a warranty?
Absolutely. The Metallics 789CTT is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Metallics 789CTT?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Metallics 789CTT from ZenSupply?
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and
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every order.
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