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Cobalt Steel 7 Series 3 Inch Cutting Depth

3 Inch Cutting Depth

Cobalt Steel 7 Series 3 Inch Cutting Depth

Shop Cobalt Steel 7 Series 3 Inch Cutting Depth from RTO. Compare cutter diameter, cutting depth, material, shank size, and magnetic drill compatibility.

Showing 41-48 of 53 products Two-column product view
CS Unitec 3-1/8" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

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CS Unitec 3-1/8" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

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Product code: 102160

Purchase price
$1,074.48
Available to rent: No

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CS Unitec 4" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

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CS Unitec 4" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

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Product code: 102188

Purchase price
$1,628.88
Available to rent: No

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CS Unitec 3/4" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

Ships: Normally Ships Next Business Day.

CS Unitec 3/4" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

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Product code: 102870

Purchase price
$159.50
Available to rent: No

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CS Unitec 13/16" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

Ships: Normally Ships Next Business Day.

CS Unitec 13/16" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

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Product code: 102871

Purchase price
$165.22
Available to rent: No

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CS Unitec 7/8" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

Ships: Normally Ships Next Business Day.

CS Unitec 7/8" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

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Product code: 102872

Purchase price
$194.92
Available to rent: No

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CS Unitec 15/16" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

Ships: Normally Ships Next Business Day.

CS Unitec 15/16" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

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Product code: 102873

Purchase price
$184.36
Available to rent: No

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CS Unitec 1" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

Ships: Normally Ships Next Business Day.

CS Unitec 1" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

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Product code: 102874

Purchase price
$204.16
Available to rent: No

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CS Unitec 1-1/16" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

Ships: Normally Ships Next Business Day.

CS Unitec 1-1/16" diameter - Unibroach Annular Cutters – Cobalt Steel (7-Series) - 3" Depth

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Product code: 102875

Purchase price
$214.94
Available to rent: No

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7-1-32613/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$165.22Sale Only7-1-3287/8"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$194.92Sale Only7-1-33015/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$184.36Sale Only7-1-3321"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$204.16Sale Only
7-1-3243/4"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$159.50Sale Only7-1-3341-1/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$214.94Sale Only7-1-3361-1/8"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$237.60Sale Only7-1-3381-3/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$245.52Sale Only7-1-3401-1/4"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$263.78Sale Only7-1-3421-5/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$270.16Sale Only
7-1-3441-3/8"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$275.44Sale Only7-1-3461-7/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$328.90Sale Only7-1-3481-1/2"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$321.20Sale Only7-1-3501-9/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$354.64Sale Only7-1-3521-5/8"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$366.96Sale Only
7-1-3541-11/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$388.08Sale Only7-1-3561-3/4"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$409.20Sale Only7-1-3581-13/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$432.08Sale Only7-1-3601-7/8"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$491.70Sale Only7-1-3621-15/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$471.68Sale Only
7-1-3642"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$517.44Sale Only7-1-3662-1/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$551.76Sale Only7-1-3682-1/8"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$598.40Sale Only7-1-3702-3/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$604.56Sale Only7-1-3722-1/4"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$616.00Sale Only
7-1-3742-5/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$631.84Sale Only7-1-3762-3/8"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$675.84Sale Only7-1-3782-7/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$707.52Sale Only7-1-3802-1/2"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$817.74Sale Only7-1-3822-9/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$771.76Sale Only
7-1-3842-5/8"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$792.00Sale Only7-1-3862-11/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$817.52Sale Only7-1-3882-3/4"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$843.92Sale Only7-1-3902-13/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$876.48Sale Only7-1-3922-7/8"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$909.04Sale Only
7-1-3942-15/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$940.72Sale Only7-1-3963"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$1,083.94Sale Only7-1-31003-1/8"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$1,074.48Sale Only7-1-31023-3/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$1,074.48Sale Only7-1-31043-1/4"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$674.52Sale Only
7-1-31063-5/16"Unibroach TM73/47-3-302Cobalt SteelIncludes Pilot Pin$1,204.72Sale Only7-1-31083-3/8"Unibroach TM71-1/47-3-3002Cobalt SteelIncludes Pilot Pin$1,236.40Sale Only7-1-31103-7/16"Unibroach TM71-1/47-3-3002Cobalt SteelIncludes Pilot Pin$1,301.52Sale Only7-1-31123-1/2"Unibroach TM71-1/47-3-3002Cobalt SteelIncludes Pilot Pin$1,359.60Sale Only7-1-31143-9/16"Unibroach TM71-1/47-3-3002Cobalt SteelIncludes Pilot Pin$1,400.96Sale Only7-1-31163-5/8"Unibroach TM71-1/47-3-3002Cobalt SteelIncludes Pilot Pin$1,416.80Sale Only
7-1-31183-11/16"Unibroach TM71-1/47-3-3002Cobalt SteelIncludes Pilot Pin$1,449.36Sale Only7-1-31203-3/4"Unibroach TM71-1/47-3-3002Cobalt SteelIncludes Pilot Pin$1,500.40Sale Only7-1-31223-13/16"Unibroach TM71-1/47-3-3002Cobalt SteelIncludes Pilot Pin$1,534.72Sale Only7-1-31243-7/8"Unibroach TM71-1/47-3-3002Cobalt SteelIncludes Pilot Pin$1,785.52Sale Only7-1-31263-15/16"Unibroach TM71-1/47-3-3002Cobalt SteelIncludes Pilot Pin$1,610.40Sale Only7-1-31284"Unibroach TM71-1/47-3-3002Cobalt SteelIncludes Pilot Pin$1,628.88Sale Only

Helpful answers

Category Questions

How do I choose the correct 3 Inch Cutting Depth annular cutter?

Match the cutter to the required hole diameter, cutting depth, arbor or shank size, pilot pin, magnetic drill capacity, and the material being cut.

When should HSS, cobalt, or carbide-tipped annular cutters be used?

HSS is a general-purpose choice for many steels, cobalt offers improved heat resistance for harder materials, and carbide-tipped cutters are often selected for abrasive, hard, or difficult materials. Tool speed, lubrication, and manufacturer recommendations remain important.

Why is cutting depth important when selecting an annular cutter?

The cutter must have enough usable depth to pass through the material without bottoming out. Also verify the pilot pin and arbor are correct for the selected depth and cutter series.

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