Round Hole Knockout Punches | McMaster-Carr

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System of Measurement

Diameter

For Use On

Stainless Steel

ID

Cutting Depth

For Use With

Tooth Material

Carbide-Tipped Steel

Hole Diameter

Shape

Round with Keyways

Pipe Size

Conduit Trade Size

Material

Carbide-Tipped Steel

For Arbor Thread Size

Body Material

High-Speed Steel

DFARS Specialty Metals

REACH

Export Control Classification Number (ECCN)

RoHS

Compliant with Exemptions

Arbor Hole

Thread Size

Number of Saws

Abrasive Material

Arbor Size

For Maximum Steel Thickness

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Copper Tube Size

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856 Products

Hole Punches

Stud-Driven Hole Punches

Stud-Driven Round Hole Punches

Stud-Driven Round Hole Punches

Turn a wrench or driver to draw the punch onto the included stud

Stud-Driven Round Hole Punches for Pipe and Conduit

Stud-Driven Round Hole Punches for Pipe and Conduit

Turn a wrench or driver to draw the punch onto the included stud

Metric Stud-Driven Round Hole Punches for Conduit

Metric Stud-Driven Round Hole Punches for Conduit

Turn a wrench or driver to draw the punch onto the included stud

Self-Centering Stud-Driven Round Hole Punches

Self-Centering Stud-Driven Round Hole Punches

The center fits inside the pilot hole to make accurate holes every time

European Standard Stud-Driven Round Hole Punches for Conduit

European Standard Stud-Driven Round Hole Punches for Conduit

Turn a wrench or driver to draw the punch onto the included stud

Metric Self-Centering Stud-Driven Round Hole Punches for Conduit

Metric Self-Centering Stud-Driven Round Hole Punches for Conduit

The center fits inside the pilot hole to make accurate holes every time

Stud-Driven Keyway Hole Punches

Stud-Driven Keyway Hole Punches

Cut through sheet metal to make holes for installing panel cutout switches

Self-Centering Stud-Driven Round Hole Punches for Pipe and Conduit

Self-Centering Stud-Driven Round Hole Punches for Pipe and Conduit

The center fits inside the pilot hole to make accurate holes every time

Stud-Driven Hole Punch Sets

Stud-Driven Hole Punch Sets for Pipe and Conduit

Stud-Driven Hole Punch Sets for Pipe and Conduit

Use a ratchet wrench or hydraulic driver to draw the punch onto the included stud

Stud-Driven Hole Punch Sets with High-Powered Straight Hydraulic Driver

Stud-Driven Hole Punch Sets with High-Powered Straight Hydraulic Driver

Create large holes and make repeated punches with 11 tons of force

Stud-Driven Hole Punch Sets with Straight Hydraulic Driver

Stud-Driven Hole Punch Sets with Straight Hydraulic Driver

Make straight punches with eight tons of force

Stud-Driven Hole Punch Sets with Right-Angle Hydraulic Driver

Stud-Driven Hole Punch Sets with Right-Angle Hydraulic Driver

Rotate the angled head up to 180° to fit into tight spaces

European Standard Stud-Driven Hole Punch Sets for Conduit

European Standard Stud-Driven Hole Punch Sets for Conduit

Use a ratchet wrench or hydraulic driver to draw the punch onto the included stud

Metric Stud-Driven Hole Punch Sets for Conduit

Metric Stud-Driven Hole Punch Sets for Conduit

Use a ratchet wrench or hydraulic driver to draw the punch onto the included stud

Self-Centering Stud-Driven Hole Punch Sets

Self-Centering Stud-Driven Hole Punch Sets

The center fits inside the pilot hole to make varoius sizes of accurate holes every time

Self-Centering Stud-Driven Hole Punch Sets with Hydraulic Driver

Self-Centering Stud-Driven Hole Punch Sets with Hydraulic Driver

Punches align themselves in pilot holes and use the hydraulic driver for power

Other Products

Hole Flaring Dies

Hole Flaring Dies

Create flares around holes in sheet metal to make the edges stronger and more rigid

Hole Saws

Connect to a drill or drill press to make circular cuts

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)