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High-Speed Twist Drill Bit 1/2" 4-1/2" Bright (1pc)
Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Pack Type:
- Pouch
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
Metallics HSD29R38E – Frequently Asked Questions
1) What size hole does the Metallics HSD29R38E twist drill bit cut, and how long is it?
The HSD29R38E is a 1/2 inch diameter high-speed steel twist drill bit with an overall length of 4-1/2 inches. That diameter is the common pull size for 1/2 inch EMT connectors and for anchor pilot holes, and the 4-1/2 inch overall length keeps the usable flute depth modest, so it is a bit for drilling through plate, strut, boxes, and framing rather than deep timber passes.
2) Will a 1/2 inch high-speed twist drill bit work in a standard 3/8 inch chuck drill?
No. A 1/2 inch high-speed steel twist bit like the HSD29R38E has a 1/2 inch straight shank, and a 3/8 inch keyless or keyed chuck will not close on it. You need a 1/2 inch chuck drill, a drill press, or a magnetic base drill. If your crew is running 3/8 inch cordless drills, look for a reduced-shank 1/2 inch bit instead.
3) What does the bright finish on this Metallics drill bit mean for the materials I can drill?
Bright finish means uncoated high-speed steel, left as ground with no black oxide or titanium coating. It cuts cleanly in mild steel, aluminum, brass, copper, and wood, and it is what most electricians use for drilling enclosures, strut, and panel backs. Uncoated HSS runs hotter in tougher alloys, so use cutting fluid and a slower speed in stainless or hardened plate.
4) Is the Metallics HSD29R38E sold as a single bit or in a multi-pack?
One bit per order. The HSD29R38E ships as a single 1/2 inch high-speed twist drill in a pouch, so if you are stocking a truck or a shop drawer with 1/2 inch bits, order the quantity you need rather than expecting an assortment.
5) Can I use this 1/2 inch HSS bit for drilling out a lock or a strike pocket?
It will cut mild steel, but a 1/2 inch twist bit is not the right tool for door hardware prep. Strike pockets and lock bores need a hole saw, a self-feed bit, or a lock installation kit sized to the prep. Use the HSD29R38E for round through-holes in sheet metal, enclosures, strut, and framing where a 1/2 inch hole is what you want.
6) What part number do I order for the Metallics 1/2 inch bright twist drill bit?
Order Metallics HSD29R38E. That is the manufacturer part number for the 1/2 inch by 4-1/2 inch bright high-speed twist drill bit, and it is the only model on it, so there is no finish or length option to specify.
How fast can I get the Metallics HSD29R38E 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 HSD29R38E come with a warranty?
Absolutely. The Metallics HSD29R38E 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 HSD29R38E?
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Why buy the Metallics HSD29R38E from ZenSupply?
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