1⁄4"-28 Threaded Inserts | McMaster-Carr

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System of Measurement

Threaded Insert Type

For Tap Thread Size

Material

Stainless Steel

Installed Length

Less than 0.25"

0.25" to 0.499"

For Use In

For Tap Type

Thread Type

Helical Insert Style

Thread Direction

Key-Locking Insert Wall Style

Drill Bit Size

Thread Spacing

Number of Locking Keys

End Type

Nut Type

Thread-Locking Insert Wall Style

External Locking Type

Specifications Met

Number of Inserts Included

Export Control Classification Number (ECCN)

DFARS Specialty Metals

REACH

RoHS

Compliant with Exemptions

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149 Products

Fastening and Joining

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

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

Press-Fit Nuts

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

Weld Nuts

Weld to metal surfaces to add permanent threads

Adhesive-Mount Nuts

Adhesive-Mount Nuts

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

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

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.)