Name: Unibit Step Drill Bit 1/4–3/4 in TiN-Coated HSS Self-Starting
Brand: IRWIN
SKU: 675-0624
Availability: InStock

Description
Additional Details
Purchase History
General Ledger Coding

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The IRWIN Unibit 10233 is a professional-grade #3 self-starting step drill bit engineered for precision drilling in thin materials such as sheet metal, copper, brass, and plastics. Constructed from industrial-grade high-speed steel, this bit features a single-flute cutting edge that ensures perfectly round holes and provides superior control with minimal vibration. The integrated SpeedPoint tip allows for fast, self-starting cuts without the need for center punching, effectively preventing tool 'walking' on smooth surfaces. This versatile tool offers nine distinct hole sizes ranging from 1/4 inch to 3/4 inch in 1/16-inch increments, with sizes laser-etched inside the flute for permanent identification. A 3/8-inch hex shank is included to provide a secure, non-slip grip in standard drill chucks, making it an ideal choice for electrical, HVAC, and plumbing applications.

Unibit Step Drill, Self-Starting, 1/4 - 3/4 in Diameter, 9 Steps, 1/8 in Step Depth, 1 Flutes, 3/8 in Shank, Hexagonal Shank, Speed Point, High Speed Steel, Titanium Nitride Coated, Applicable Materials: Stainless Steel, Copper, Brass, Aluminum, Plastic, Laminates

Packaging/Shipping Size and Weight: Length: 11" | Width: 7" | Height: 5" | Weight: 0.19 lbs

Features

SpeedPoint tip for fast, self-starting cuts without center punching
Single-flute cutting edge ensures perfectly round holes in thin materials
High-speed steel construction for durability and long service life
Nine hole sizes from 1/4" to 3/4" in a single convenient bit
3/8" hex shank prevents slipping in the drill chuck during operation
Laser-etched size markings inside the flute for easy identification
Ideal for drilling mild steel, aluminum, plastic, and wood
Designed for maximum control and reduced vibration while cutting

Product Details
Brand:	IRWIN
Series:	Unibit
Product Type:	Step Drill Bit
Material:	High Speed Steel
Finish:	Bright
Size/Dimensions:	1/4 in to 3/4 in diameter range
Step Count:	9
Step Depth:	1/8 in
Flute Count:	1
Shank Size:	3/8 in
Shank Type:	Hex
Application:	Drilling holes in thin metal, plastic, and laminates
Compatible Materials:	Stainless steel, copper, brass, aluminum, plastic, laminates
Color:	Silver
Size:	1/4 in - 3/4 in
Number of Steps:	9
Step Increments:	1/16 in
Maximum Material Thickness:	1/8 in
Hole Sizes:	1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"
Minimum Hole Diameter:	1/4 in
Maximum Hole Diameter:	3/4 in
Point Type:	SpeedPoint Self-Starting
Flute Type:	Single Radial Concave

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General Ledger Coding is only available to logged-in customers.

General Ledger Coding

General Ledger Coding is a value added service provided for you at no additional cost.

General Ledger Coding makes accounting easier by providing you with a calculated total of purchases based on your General Ledger Codes.

In addition to traditional General Ledger Summary provided at time of invoice, we can also provide quotes and order acknowledgements with General Ledger Coding as well. We also give you the ability to change a GL Code for one or all items for renovation projects that may utilize a single GL Code. We can also code any of our "extended inventory" items with your General Ledger Code at the time of quote, order confirmation and invoicing as well. We can code our item numbers directly to your GL Codes should our item categories not align directly with your GL Code Categories.

Please contact us if you wish to implement our General Ledger Coding feature.