Irwin HSS Jobber Length Drill ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$10.86
Irwin HSS Jobber Length Drill Bit, 3/8" Reduced Shank, M-2 High Speed Steel

Irwin HSS Jobber Length Drill Bit, 3/8" Reduced Shank, M-2 High Speed Steel

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Model: 73830

In Stock (leaves warehouse same day if ordered before 3pm ET)

$10.86
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Irwin 1/2" Reduced-Shank Jobber Length Drill Bit

The Irwin 1/2" Reduced-Shank Jobber Length Drill Bit is built from M-2 high-speed steel, engineered for strength, heat resistance, and wear resistance in general-purpose drilling applications. This jobber-length bit features a 118° chisel-tip point that provides clean starts and helps prevent the bit from walking off-center when starting a hole. A 3/8" reduced shank allows this 1/2" diameter bit to fit standard 3/8" drill chucks, giving it broader compatibility with drills that would otherwise be limited to smaller-diameter bits. Designed for versatility, this drill bit is suited for drilling wood, metal, and plastic, making it a practical choice for technicians, contractors, and DIY users who need dependable performance across multiple materials.

Key Features

  • Trade Size: 1/2" drilling diameter paired with a 3/8" reduced shank that fits all 3/8" drills, expanding compatibility with standard drill chucks.
  • Durable Construction: Manufactured from M-2 high-speed steel, delivering the strength, heat resistance, and wear resistance needed for repeated drilling cycles.
  • Precision Point Geometry: A 118° chisel-tip point provides clean, accurate starts and helps prevent the bit from walking on the work surface.
  • Versatile Material Compatibility: Engineered for drilling wood, metal, and plastic, making it a flexible option for general-purpose jobs.
  • Jobber Length Design: Standard jobber-length proportions balance reach and rigidity for everyday drilling tasks.
  • Bright Finish: A bright finish gives the bit a clean surface appearance while supporting smooth operation.

Technical Specifications

  • Bit Type: Jobber
  • Product Material Group: Metal
  • Power Source: Non-Energy Using
  • Country of Origin: China
  • Warranty: NLW

Typical Applications

  • General-Purpose Drilling in Wood, Metal, and Plastic
  • Maintenance, Repair, and Fabrication Drilling Tasks
  • Workshop, Garage, and Jobsite Drilling Applications
  • Drilling Projects Requiring a Standard 3/8" Chuck Drill
  • Precision Hole-Starting Where Bit Walking Must Be Minimized

Why Irwin?

Irwin manufactures this drill bit from M-2 high-speed steel, a material chosen specifically for its strength, heat resistance, and wear resistance under repeated drilling cycles. The 118° chisel-tip point and 3/8" reduced-shank design reflect practical engineering choices that improve accuracy and expand compatibility with standard drill chucks. For professionals and DIY users drilling wood, metal, or plastic, this jobber-length bit offers dependable, general-purpose performance backed by Irwin's construction quality.

Manufacturer Resources

Product Specs

Department:
Electrical
Product Type:
Twist Drill Bit
list_batch:
IRW-20260923
Product Subgroup:
Drill & Driver Bits
Product Width:
1.9 inches
Product Group:
Power Tools & Accessories
Product Length:
8.5 in
Product Material Group:
METAL
Individual Vs. Set (Syndigo):
INDIVIDUAL
Bit Type:
Jobber
Power Source:
NON-ENERGY USING

Irwin 73830 – Frequently Asked Questions

1) Will a 1/2 inch drill bit fit my 3/8 inch chuck drill?
That is exactly what the reduced shank is for. The Irwin jobber length bit cuts a 1/2 inch hole but its shank is turned down to 3/8 inch, so it seats in any standard 3/8 inch chuck that otherwise tops out at 3/8 inch bits. No adapter, no larger drill needed.
2) Can this Irwin bit drill steel, or is it only for wood?
It handles wood, metal, and plastic. The body is M-2 high speed steel, which is the grade chosen for heat and wear resistance through repeated cycles, so it stands up to metal drilling rather than just softer stock.
3) Will this drill bit walk when I start a hole without a center punch?
The point is ground at 118 degrees with a chisel tip, which is the general-purpose geometry that bites quickly and resists skating off the mark. On hard or smooth metal a center punch is still the right habit, but for wood, plastic, and general fabrication work it starts clean.
4) Is the Irwin 15/32 inch bit the right size to tap 1/2-13 threads?
No. 15/32 inch is a common clearance and reaming-prep size, not the tap drill for 1/2-13 UNC, which calls for 27/64 inch. Use the 15/32 inch bit where you need a slightly undersized hole ahead of a 1/2 inch finish, or the 1/2 inch bit for a full 1/2 inch hole.
5) Is this a bright finish bit or coated, and does that matter for metal work?
Bright finish, uncoated. On an uncoated HSS bit you want cutting fluid when drilling steel to carry heat away; the M-2 steel handles the heat, but lubricant extends the edge considerably. For wood and plastic, run it dry.
6) What does jobber length mean for this bit, and should I get something shorter?
Jobber is the standard everyday proportion, balancing reach against rigidity. It suits through-holes in framing, sheet metal, panels, and general MRO work. If you are drilling hardened or thin stock where flex causes oversized holes, a shorter screw-machine or stub length bit is the stiffer choice, but for maintenance and fabrication drilling jobber length is what most shops stock.
7) Where was the Irwin reduced shank drill bit made?
China is the stated country of origin. Worth knowing if you are filling a government or institutional order with domestic-sourcing requirements, since this bit would not satisfy a Buy American clause.
How fast can I get the Irwin 73830 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 Irwin 73830 come with a warranty?
Absolutely. The Irwin 73830 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 Irwin 73830?
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 Irwin 73830 from ZenSupply?
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