Knockout Punches | McMaster-Carr

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Shape

Computer Connector

Round with Keyways

For Use On

Stainless Steel

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Conduit Trade Size

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For Maximum Steel Thickness

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Stud Diameter

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Panel Cutout Diameter

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Material

Carbide-Tipped Steel

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For Cutting

DFARS Specialty Metals

REACH

RoHS

Compliant with Exemptions

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Carbide-Tipped Steel

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894 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 D Hole Punches

Stud-Driven D Hole Punches

Cut through sheet metal to create holes for installing switches and instruments

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

Stud-Driven Keyway Hole Punches

Stud-Driven Keyway Hole Punches

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

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

Stud-Driven Square Hole Punches

Stud-Driven Square Hole Punches

Cut openings for a variety of panel switches and connectors

Stud-Driven Rectangle Hole Punches for Power/Control Connectors

Stud-Driven Rectangle Hole Punches for Power/Control Connectors

Punch holes for installing heavy duty industrial connectors

Manual Wrench-Operated Stud-Driven DIN-Size Hole Punches

Manual Wrench-Operated Stud-Driven DIN-Size Hole Punches

Use a wrench to cut DIN-size holes in steel up to 1/16" thick

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 Rectangle Hole Punches

Stud-Driven Rectangle Hole Punches

Make openings for panel switches and connectors

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

Fast-Cut Stud-Driven Computer-Connector-Shape Hole Punches

Fast-Cut Stud-Driven Computer-Connector-Shape Hole Punches

Cut through aluminum and steel fast to make openings for DB connectors

Hydraulic Driver-Operated Stud-Driven DIN-Size Hole Punches

Hydraulic Driver-Operated Stud-Driven DIN-Size Hole Punches

Cut DIN-size holes in steel up to 7/64" thick using a driver ram and hydraulic pump

Stud-Driven Hole Punch Sets

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

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

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

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

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

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Connect to a drill or drill press to make circular cuts

Hole Flaring Dies

Hole Flaring Dies

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

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