4-40 Helicoils | McMaster-Carr

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Helical Insert Style

Material

Installed Length

Specifications Met

Thread Type

Thread Direction

For Tap Type

Military Specification

For Insert Thread Size

4-40

System of Measurement

Passivation

Finish

Drill Bit Size

Number of Inserts Included

288

DFARS Specialty Metals

For Use On

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

Chamfer Type

Tensile Strength

Thread Spacing

For Insert Thread Type

UNC

Length

Drill Bit Decimal Size Equivalent

0.12"

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59 Products

Fastening and Joining

Threaded Inserts

Create new threads or repair stripped threads

47 products

Threaded Insert Installation Tools

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

5 products

Threaded Insert Removal Tools

Turn counterclockwise to extract helical inserts

3 products

Fabricating and Machining

Taps

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

2 products

Measuring and Inspecting

Plug Gauges

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

2 products