Left-Hand-Thread Taps | McMaster-Carr

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Tapping Heads

Taps

Threaded Inserts

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Right Hand and Left Hand

For Use On

Chamfer Type

Thread Pitch

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Thread Type

Flute Type

Material

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Number of Flutes

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Pitch Diameter Limit

Tap Sizes Included

Finish

Titanium Carbon Nitride (TiCN) Coated

Titanium Nitride (TiN) Coated

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Manufacturer

Greenfield Industries

For Threading

Helical Insert Threads

Pipe Threads

Number of Tapping Ends

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

REACH

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Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

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341 Products

Taps

For Fastener Threads

Left-Hand Thread Taps

Create left-hand threads that prevent counter-clockwise rotating parts from loosening

231 products

Left-Hand Thread Tap Sets

A variety of taps to create a snug fit with left-hand fasteners

57 products

Left-Hand Thread Chip-Clearing Taps

Prevent chip buildup when creating left-hand threads for counter-clockwise rotating parts

45 products

For Acme and Trapezoidal Threads

Left-Hand Acme Thread Taps

Thread holes for left-hand Acme fasteners that secure counter-clockwise rotating parts

23 products

For Pipe and Conduit Threads

Left-Hand Pipe and Conduit Taps

Make it easier to disconnect or join sections of pipe

8 products

For Helical Inserts

Left-Hand Thread Helical Insert Taps

Size holes for installing helical inserts that anchor left-hand bolts and rods

11 products

Other Products

Threaded Inserts

Create new threads or repair stripped threads

11 products

Tapping Heads

Cut internal threads without stopping your machine

6 products