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

Helical Insert Type

End Type

Thread Insert Style

Thread Type

Drill Bit Size

For Tap Thread Size

Specifications Met

Thread Direction

Nut Type

For Tap Type

Military Specification

MIL-DTL-45932/1

Thread Spacing

DFARS Specialty Metals

Body Length

RoHS

Compliant with Exemptions

Finish

Phosphate Coated

Tin Zinc Plated

REACH

Passivation

Flange Diameter

Export Control Classification Number (ECCN)

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216 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

Adhesive-Mount Nuts

Adhesive-Mount Nuts

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

Rivet Nuts

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

Weld Nuts

Weld to metal surfaces to add permanent threads

Rivet-Mount Nuts

Rivet-Mount Nuts

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

Socket Nuts

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

Threaded Insert Installation Tools

Threaded Insert Installation Tools

Install 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

Heat-Set Insert Tips

Heat-Set Insert Tips

Attach to soldering irons to heat inserts for installing them in or removing them from plastic parts

Threaded Insert Removal Tools

Threaded Insert Removal Tools

Turn counterclockwise to extract helical inserts

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.)