Irwin 73306 733 Series Turboma...
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Irwin 73306 733 Series Turbomax Jobber Length Drill Bits, High-Speed Steel

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Model: 73308

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

$2.19
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Irwin 733 Series Turbomax Jobber Length Drill Bits, High-Speed Steel

The Irwin 733 Series Turbomax jobber length drill bits are high-speed steel bits engineered for high-performance metal drilling with portable power drills, available in multiple jobber sizes spanning models 73306 through 73313, including the 3/32" bit featured here. Each bit pairs a black body and gold flute with a self-centering Turbomax tip that delivers burr-free holes, exact centering, and no walking on straight or curved metal surfaces. Individually carded as part of the Irwin 733 Series, these jobber bits are built for professionals and DIY users who need clean, fast starts and long-lasting sharpness when drilling metal on the job site or in the shop.

Key Features

  • 733 Series Model Range: Spans models 73306 through 73313, covering multiple jobber length bit sizes for portable drill use on metal, including 3/32".
  • Self-Centering Turbomax Tip: Delivers clean entry and fast starts, stays sharper longer, and resists walking on straight and curved metal surfaces for accurate hole placement.
  • High-Speed Steel Construction: Black body with gold flute designed for burr-free holes and durable performance in metal across the series.
  • Three-Flatted Shank: Featured on 3/16" and above sizes within the 733 Series for improved chuck grip and reduced slippage.
  • Fast-Drilling Performance: Revolutionary tip design stays sharp longer and drills up to 10X faster than other leading drill bits.
  • Jobber Bit Type: Individually carded for retail display and easy identification on the shelf.

Technical Specifications

  • Bit Type: Jobber
  • Product Material Group: Metal
  • Power Source: Non-Energy Using
  • Individual Vs. Set: Individual
  • Claims Needed: No
  • Country of Origin: CHN
  • Battery Included: No

Typical Applications

  • Metal Drilling with Portable Power Drills
  • Curved and Contoured Metal Surfaces
  • Precision Hole Starting Without Walking
  • Professional and DIY Metalworking Projects

Why Irwin?

Irwin engineers the 733 Series Turbomax bits with high-speed steel construction and a self-centering tip designed to stay sharp longer and start cleanly every time across the full size range. The three-flatted shank featured on larger sizes improves chuck grip, while the burr-free, exact-centering performance helps professionals and DIY users work efficiently on straight and curved metal surfaces. Choose Irwin for dependable, high-performance drilling built to hold up on the job site and in the shop.

Manufacturer Resources

Product Specs

Bit Type:
Jobber
Claims Needed:
No
Individual Vs. Set (Syndigo):
INDIVIDUAL
Product Material Group:
METAL
Battery Included:
No
Power Source:
NON-ENERGY USING
list_batch:
IRW-20260923
Product Type:
Twist Drill Bit
Series:
733 Series
Department:
Electrical
Product Subgroup:
Drill & Driver Bits
Product Material:
High-Speed Steel
Product Group:
Power Tools & Accessories

Irwin 73308 – Frequently Asked Questions

1) What sizes do the Irwin 733 Series Turbomax jobber drill bits come in?
Six diameters, ordered individually by part number: 3/32 in (73306), 1/8 in (73308), 5/32 in (73310), 11/64 in (73311), 3/16 in (73312) and 13/64 in (73313). Each is sold as a single bit, not a set, so order the exact diameter your hole calls for.
2) Will the Irwin Turbomax bits drill steel, or are they only for wood?
They're made for metal. High-speed steel construction with a material group of metal, intended for metal drilling with portable power drills. They'll cut wood if you need them to, but the tip geometry and HSS body are specified for metal work.
3) Do I need a center punch before drilling with these bits?
That's the point of the Turbomax tip. It's self-centering and resists walking on both straight and curved metal surfaces, so you get exact centering and a clean start without pre-punching. Useful on conduit, pipe and sheet metal where a punch would dent the work.
4) Will the smaller Turbomax bits slip in my drill chuck?
The three-flatted shank that grips a keyless chuck without spinning is on the 3/16 in size and above within the 733 Series, which here means 73312 (3/16 in) and 73313 (13/64 in). The 3/32 through 11/64 sizes have a plain round shank, so snug the chuck down hard on those if you're driving hard into steel.
5) What is a jobber length drill bit, and is that what I want for sheet metal and electrical work?
Jobber length is the general-purpose standard length, long enough for most through-holes but stiff enough to resist flexing, which is why it's the default for metal work in a hand drill. The 733 Series bits are jobber type. If you need to reach through a deep assembly or past an obstruction, that's a job for an extended or aircraft-length bit instead.
6) Which Turbomax size should I use to pilot a self-tapping screw into steel stud?
The 733 Series covers the common small pilot range, 3/32, 1/8, 5/32, 11/64, 3/16 and 13/64 inch. Pick the diameter from the screw's published pilot spec rather than by eye. For repeat work on a punch list, the 1/8 in (73308) and 5/32 in (73310) are the two most often pulled in that range.
7) Are these bits cordless-drill bits or do they need a corded drill?
Either. They're non-powered accessories with no battery involved, made to run in portable power drills, corded or cordless. Nothing is included beyond the bit itself.
8) Is each Irwin 73306 bit sold loose or on a card?
Each bit is individually carded, one bit per card, so the size is marked and identifiable on the shelf. Good for a service van or a tool crib where bits get pulled one at a time rather than from an index case.
9) Will these bits leave a burr I have to deburr afterward?
The Turbomax tip is specified for burr-free holes in metal, so cleanup is minimal compared with a standard 118-degree twist bit. Back the work where you can and ease off at breakthrough on thin sheet.
How fast can I get the Irwin 73308 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 73308 come with a warranty?
Absolutely. The Irwin 73308 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 73308?
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 73308 from ZenSupply?
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