4-40 Threaded Inserts | McMaster-Carr

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System of Measurement

Threaded Insert Type

Material

Stainless Steel

Installed Length

Less than 0.25"

0.25" to 0.499"

For Use In

End Type

Thread Type

Helical Insert Style

Drill Bit Size

Thread Insert Style

For Tap Thread Size

Specifications Met

Thread Direction

Thread Spacing

Nut Type

Military Specification

MIL-DTL-45932/1

Body Length

For Tap Type

REACH

Finish

Dry Film Lubricated

Phosphate Coated

Tin Zinc Plated

RoHS

Compliant with Exemptions

DFARS Specialty Metals

Number of Inserts Included

Thread Fit

Unified Standard Class 1B

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Unified Standard Class 3B

Export Control Classification Number (ECCN)

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212 Products

Fastening and Joining

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

Rivet-Mount Nuts

Rivet-Mount Nuts

Add threads in hard-to-reach areas and materials that are too thin to be tapped

Adhesive-Mount Nuts

Adhesive-Mount Nuts

Attach threads to material that’s too thin for a threaded insert

Weld Nuts

Weld to metal surfaces to add permanent threads

Socket Nuts

Install in recessed holes and tight spots where a wrench won’t fit; also known as Allen nuts

Threaded Insert Tools

Threaded Insert Tools

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

Press-Fit Nut Installation Tools

Press-Fit Nut Installation Tools

Everything you need to install press-fit nuts by hand

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.)