You may also like
Carbon Steel Tap Taper Type 7/16-20 (1pc)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Pouch
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
Metallics 71620CTT – Frequently Asked Questions
1) What thread size does the Metallics 71620CTT tap cut?
It cuts a 7/16-20 thread, which is the UNF (fine) pitch for 7/16 inch, not the 7/16-14 coarse size. If the hole has to accept a fine-thread 7/16 bolt or a fine-thread rod hanger, this is the right tap; a 7/16-14 fastener will not thread into it.
2) What size hole do I drill before tapping 7/16-20?
25/64 inch is the standard tap drill for a 7/16-20 thread, giving about 75 percent thread depth. Going larger loses holding power in the thread; going smaller loads the tap and risks snapping it, which matters with a carbon steel tap.
3) What is a taper tap used for versus a plug or bottoming tap?
A taper tap is chamfered back over roughly eight to nine threads, so it eases into the hole and self-aligns. That makes it the one you start a thread with, and it works through holes fine. What it won't do is cut a full thread to the bottom of a blind hole, because the long lead leaves several incomplete threads at the end. For blind holes, start with the taper and finish with a plug or bottoming tap in the same 7/16-20 size.
4) Is a carbon steel tap good enough for electrical work, or do I need high speed steel?
Carbon steel is what the 71620CTT is made from, and it handles the work an electrician usually does with a hand tap: chasing or cutting threads in mild steel strut, channel, outlet boxes, and rod. It runs cooler and takes a keen edge, but it softens at lower temperature than high speed steel, so keep it hand driven and lubricated rather than spinning it in a drill. For production tapping or harder material such as stainless, step up to HSS.
5) How many taps come in the Metallics 71620CTT pack?
One tap, packed in a pouch. It is a single-piece item, so if you want a full taper, plug and bottoming progression in 7/16-20 you order them separately.
6) Can I use the 7/16-20 taper tap to clean up damaged threads on an existing bolt hole?
Yes, as long as the existing hole really is 7/16-20. The long chamfer on a taper tap makes it the easiest type to pick up damaged threads without cross-threading. Back it out every half turn to clear chips and use cutting oil; a carbon steel tap will break if you force it through a galled or rusted hole. Note it is a cutting tap, not a thread-restoring file, so it will remove metal.
7) What size tap wrench fits the Metallics 7/16-20 tap?
7/16 inch hand taps use a square drive shank, so any adjustable T-handle or bar-type tap wrench rated to cover roughly 1/4 inch through 1/2 inch taps will hold it. The wrench is not included; the 71620CTT ships as the tap alone.
How fast can I get the Metallics 71620CTT 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 71620CTT come with a warranty?
Absolutely. The Metallics 71620CTT 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 71620CTT?
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 71620CTT from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.