Helical STI Tools | McMaster-Carr

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System of Measurement

Thread Size

Helical Insert Type

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Installed Length

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For Tap Type

Specifications Met

Drill Bit Size

For Tap Thread Size

Number of Inserts Included

288

For Insert Thread Size

Thread Spacing

Military Specification

DFARS Specialty Metals

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Compliant with Exemptions

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Compliant

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Export Control Classification Number (ECCN)

Passivation

Tensile Strength

Finish

For Use On

Chamfer Type

For Insert Thread Type

1,371 Products

Fastening and Joining

Threaded Insert Installation Tools

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

181 products

Threaded Insert Removal Tools

Turn counterclockwise to extract helical inserts

52 products

Threaded Inserts

Create new threads or repair stripped threads

940 products

Fabricating and Machining

Taps

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

164 products

Tap Guides

Place on your workpiece to cut straight threads without building a fixture

2 products

Measuring and Inspecting

Plug Gauges

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

32 products