Greenlee 50121510 M3-M10 6-Pie...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$138.19
$88.19
Greenlee 50121510 M3-M10 6 Piece Drill/Tap Set

Greenlee 50121510 M3-M10 6-Piece Drill/Tap Set, High Speed Steel

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Model: 50121510
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$88.19
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Greenlee 50121510 M3-M10 6-Piece Drill/Tap Set, High Speed Steel

The Greenlee 50121510 is a 6-piece drill/tap set covering metric thread sizes M3 through M10, engineered from High Speed Steel for durable performance in Mild Steel, Copper, Brass, and Aluminum up to 10 GA material thickness. Each bit features a split point with web thinning for accurate starts and reduced walking, and mounts to a 1/4 IN quick change hex shank for fast bit swaps in impact drivers and drills. Designed for electricians and maintenance techs who need to drill a clearance hole and tap metric threads in a single tool, this set streamlines panel, enclosure, and bracket fabrication tasks on the jobsite. The compact 6-piece configuration keeps every size organized and ready to grab, making it easy to move between drilling and tapping operations without swapping tool systems.

Key Features

  • Metric Size Range: Covers M3 - M10 thread sizes in a single 6-piece set for versatile tapping applications.
  • Durable Construction: Made from High Speed Steel for long tool life and resistance to heat generated during drilling and tapping.
  • Split Point With Web Thinning: Reduces walking and improves start accuracy on Mild Steel, Copper, Brass, and Aluminum.
  • Quick Change Hex Shank: 1/4 IN quick change hex shank allows fast, secure bit changes without a chuck key.
  • Material Capacity: Rated for use on material up to 10 GA thick, suitable for enclosure and bracket work.
  • Metric Thread Type: Purpose-built for metric fastener applications common in electrical and industrial equipment.
  • Compact 6-Piece Set: Product footprint of 9.550 IN length x 6.650 IN width x 1.500 IN height keeps the set organized and portable.

Technical Specifications

  • Country Of Origin: CN
  • Material Thickness: Up to 10 GA
  • Material Type: Mild Steel, Copper, Brass, Aluminum
  • Number Of Pieces: 6
  • Point Type: Split Point With Web Thinning
  • Product Height: 1.500 IN
  • Product Length: 9.550 IN
  • Product Material: High Speed Steel
  • Product Size: M3 - M10
  • Product Width: 6.650 IN
  • Shank: 1/4 IN Quick Change Hex
  • Thread Type: Metric
  • Volume: 95.26125000000002 CI

Typical Applications

  • Electrical Panel and Enclosure Fabrication
  • Bracket and Support Drilling and Tapping
  • Metric Fastener Installation in Metal Components
  • Maintenance and Repair of Industrial Equipment
  • Field Fabrication on Mild Steel, Copper, Brass, and Aluminum

Why Greenlee?

Greenlee's 50121510 drill/tap set is built from High Speed Steel with a split point and web thinning design for accurate, controlled starts across common metal materials. The 1/4 IN quick change hex shank keeps the set compatible with standard impact-ready tool holders, giving electricians and technicians a dependable, code-focused solution for metric drilling and tapping tasks on the job. With coverage from M3 to M10 in one organized 6-piece set, this tool reduces the need to carry separate drill and tap kits, saving time and space on service calls and panel builds.

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Manufacturer Resources

Product Specs

Material Thickness:
Up to 10 GA
Material Type:
Mild Steel, Copper, Brass, Aluminum
Number Of Pieces:
6
Point Type:
Split Point With Web Thinning
Product Height:
1.500 IN
Product Length:
9.550 IN
Product Material:
High Speed Steel
Product Size:
M3 - M10
Product Width:
6.650 IN
Shank:
1/4 IN Quick Change Hex
Thread Type:
Metric
Volume:
95.26125000000002 CI
Product Type:
Drill Tap Kit
Department:
Electrical
Product Subgroup:
Tap Tools & Deburrers
Product Group:
Hand Tools

Greenlee 50121510 – Frequently Asked Questions

1) Will the Greenlee 50121510 drill/tap set work in an impact driver?
Yes. Every bit in the Greenlee 50121510 set uses a 1/4 inch quick change hex shank, so it drops straight into an impact driver or any standard quick-change hex holder. No chuck key, no collet. A keyed or keyless drill chuck will also grip the hex shank if you prefer the slower, more controlled speed for tapping.
2) What thread sizes does the Greenlee 50121510 6-piece set cover?
The set covers metric threads from M3 through M10 across six pieces. Threads are metric only, so if you are chasing UNC or UNF fasteners on a panel or strut bracket, this is the wrong kit.
3) How thick a panel can these drill/tap bits handle?
Material capacity is up to 10 gauge. That covers most enclosure walls, junction box bodies, and light bracket stock. For anything heavier than 10 GA you want a separate drill and a hand tap with a wrench so you can control the torque through the full thread depth.
4) Can I tap stainless steel with the Greenlee 50121510 set?
No. The rated materials are mild steel, copper, brass, and aluminum. Stainless is not among them, and high speed steel bits of this type will work-harden and snap in it. Use a cobalt or coated tap sized for stainless instead.
5) Do these bits drill the hole and cut the thread, or do I still need a separate drill bit?
Each piece does both. It is a combination drill/tap, so you drill the clearance hole and cut the metric thread in one pass without pulling the tool out and swapping to a tap. That is the point of the kit for panel and enclosure work where you are at the top of a ladder with one driver in hand.
6) What is the manufacturer part number to order the Greenlee metric drill/tap set?
Order it as Greenlee 50121510. That is the single model covering the full M3 to M10 six-piece set, so there are no size or finish choices to specify.
7) Why does the split point matter on a drill/tap bit?
The bits use a split point with web thinning. On sheet metal and enclosure walls that means the bit bites where you put it instead of skating across the surface, so you can start a hole in a painted panel face without a center punch and without chasing the mark.
How fast can I get the Greenlee 50121510 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 Greenlee 50121510 come with a warranty?
Absolutely. The Greenlee 50121510 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 Greenlee 50121510?
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 Greenlee 50121510 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.
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