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Drill Bit HD Cobalt St 135d SplPt #7 3-5/8" YLW (1pc)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Pouch
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
Metallics HSSCN7E – Frequently Asked Questions
1) What size hole does the Metallics HSSCN7E #7 drill bit make, and what is it used for?
The HSSCN7E is a #7 wire-gauge jobber bit, 3-5/8 inches overall. A #7 hole is the standard tap drill for 1/4-20 threads, which is why electricians reach for this one when they need to drill and tap steel for 1/4-20 machine screws on strut, boxes, panel enclosures, and equipment mounting.
2) Will a cobalt drill bit cut stainless steel and hardened metal, or do I need carbide?
Cobalt is the right call for stainless, hardened steel, and cast iron. The HSSCN7E is a heavy duty cobalt bit, meaning the cobalt is alloyed through the steel rather than coated, so it holds its edge at the high temperatures stainless generates and can be resharpened without losing its cutting properties. Carbide only becomes necessary for masonry or abrasive non-metals.
3) I need to drill a 1/4-20 tap hole in a steel enclosure. Is the Metallics HSSCN7E the right bit, or should I use a letter or fractional size?
For a 1/4-20 tap in steel, #7 is the standard tap drill and this is a #7 bit. Fractional 13/64 runs undersize and makes the tap work harder; 7/32 runs oversize and cuts thread engagement. Stay with the #7 for full-depth threads in panel steel and strut.
4) How many drill bits come in the Metallics HSSCN7E package?
One bit per package, supplied in a pouch. It is not a set and not a bulk pack, so if you are stocking a van or a crib with #7 bits you order the quantity you need as individual pieces.
5) Why is this drill bit yellow instead of bright or black oxide?
The yellow finish on the HSSCN7E is how cobalt bits are commonly identified in a mixed drill index, which saves you pulling a high speed steel bit out of the case when you meant to grab the cobalt one. It is a color distinction for identification, not a coating that changes how the bit cuts.
How fast can I get the Metallics HSSCN7E 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 HSSCN7E come with a warranty?
Absolutely. The Metallics HSSCN7E 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 HSSCN7E?
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 HSSCN7E 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.