5/16"-18 Helicoils | McMaster-Carr

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System of Measurement

Helical Insert Type

Installed Length

Material

Thread Direction

For Tap Type

Number of Inserts Included

Thread Type

UNC

For Insert Thread Size

Drill Bit Size

DFARS Specialty Metals

Thread Spacing

Military Specification

Export Control Classification Number (ECCN)

Tensile Strength

Specifications Met

For Use On

Passivation

RoHS

Compliant with Exemptions

REACH

Chamfer Type

Finish

Length

For Insert Thread Type

UNC

Maximum Tapping Depth

1 1/4"

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56 Products

Fastening and Joining

Threaded Inserts

Create new threads or repair stripped threads

42 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

Fabricating and Machining

Taps

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

3 products

Measuring and Inspecting

Plug Gauges

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

2 products