1/4"-20 Helicoils | McMaster-Carr

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Helical Insert Style

Material

Installed Length

Thread Direction

Number of Inserts Included

For Tap Type

Helical

System of Measurement

Inch

Metric

Military Specification

Drill Bit Size

Thread Type

Specifications Met

Thread Spacing

Passivation

Tensile Strength

Finish

REACH

RoHS

Compliant with Exemptions

Not Compliant

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Export Control Classification Number (ECCN)

EAR99

Certificate Type

Accuracy Certificate Traceable to NIST

Calibration Certificate Traceable to NIST

Gauge Measurement Type

No-Go

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62 Products

Fastening and Joining

Threaded Inserts

Create new threads or repair stripped threads

48 products

Threaded Insert Installation Tools

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

6 products

Threaded Insert Removal Tools

Turn counterclockwise to extract helical inserts

3 products

Measuring and Inspecting

Plug Gauges

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

2 products