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High-Speed Twist Drill 7 3-5/8" (10pcs)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Pouch
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
Metallics NHSD7 – Frequently Asked Questions
1) What size hole does a number 7 high speed twist drill make?
A No. 7 drill is 0.201 inch in diameter, which is the standard tap drill for a 1/4-20 thread. Electricians reach for it when they need to tap 1/4-20 into strut, channel, or box steel instead of using a self-drilling fastener. The NHSD7 bit measures 3-5/8 inches overall.
2) How many drill bits come in the Metallics NHSD7 pack?
Ten bits per pack, supplied in a pouch rather than loose or individually boxed. It is a single ordering option, model NHSD7, so there is no smaller count to pick from.
3) Will a 3-5/8 inch twist drill reach through strut and a box flange, or do I need a longer bit?
Overall length on the NHSD7 is 3-5/8 inches, which is a jobber-style length. Once the shank is in the chuck you have roughly two inches of usable flute, so it clears typical strut, enclosure flanges, and plate steel. For drilling deep into a recess or through a stack of framing members you would need an extension or a long-series bit instead.
4) What part number do I order to restock the electricians' 1/4-20 tap drill?
Order Metallics NHSD7. It is the 10-piece pouch of No. 7 high speed twist drills at 3-5/8 inch length, the common tap drill size for 1/4-20, and it is stocked as an electrical item rather than a general tool line.
5) Is the Metallics NHSD7 suitable for drilling steel, or is it a wood bit?
It is a high-speed steel twist drill, meaning it is cut for metal: steel strut, enclosures, junction box walls, and light structural stock. It will also go through wood and plastic, but it has no brad point or auger flute, so it wanders more in wood than a dedicated wood bit.
How fast can I get the Metallics NHSD7 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 NHSD7 come with a warranty?
Absolutely. The Metallics NHSD7 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 NHSD7?
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 NHSD7 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.