1/4"-28 Helicoils | McMaster-Carr

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System of Measurement

Helical Insert Style

Thread Direction

Installed Length

0.25" to 0.499"

Material

18-8 Stainless Steel

Military Specification

For Tap Type

Thread Type

Number of Inserts Included

For Insert Thread Size

Specifications Met

Thread Spacing

Finish

Passivation

For Use On

Stainless Steel

Drill Bit Size

Tensile Strength

DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

RoHS

Compliant with Exemptions

Chamfer Type

For Insert Thread Type

Overall Length

Length

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34 Products

Fastening and Joining

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Threaded Insert Installation Tools

Threaded Insert Installation Tools

Install helical, key-locking, slotted-drive, and other threaded inserts

Threaded Insert Removal Tools

Threaded Insert Removal Tools

Turn counterclockwise to extract helical inserts

Fabricating and Machining

Taps

Cut internal threads for fasteners, pipe, conduit, and more

Measuring and Inspecting

Plug Gauges

Verify the diameter or threads of machined holes in finished parts; also called pin gauges

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