9/16"-12 Reducers | McMaster-Carr

Filter by

System of Measurement

Threaded Insert Type

For Tap Thread Size

Material

Installed Length

Key-Locking Insert Wall Style

For Tap Type

For Use In

Thread Type

End Type

Thread Pitch

Drill Bit Size

Thread Direction

Thread Spacing

Thread Fit

Unified Standard Class 2B

Unified Standard Class 3B

Tensile Strength

20,000 psi to 39,999 psi

50,000 psi to 99,999 psi

100,000 psi or greater

Not Rated

External Locking Type

REACH

DFARS Specialty Metals

RoHS

Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

EAR99

Number of Locking Keys

Finish

Cadmium Plated

Dry Film Lubricated

Phosphate Coated

Military Specification

Number of Inserts Included

Forward

How can we improve?

111 Products

How to Install Key-Locking Inserts

18-8 Stainless Steel Easy-to-Install
Thread-Locking Inserts

Made of 18-8 stainless steel, these inserts have better corrosion resistance than black-phosphate steel.

Black-Phosphate Steel Easy-to-Install
Thread-Locking Inserts

A black-phosphate finish provides mild corrosion resistance.

316 Stainless Steel Easy-to-Install
Thread-Locking Inserts

These inserts are the most corrosion-resistant thread-locking inserts we offer.

Easy-to-Install Thread-Locking Insert Assortments

These assortments include various sizes of thread-locking inserts.

Easy-to-Install Thread-Locking
Inserts with Installation Tools

A closed-end tap, drill bit, and installation bit are included with these inserts.

Screw-Locking Easy-to-Install
Thread-Locking Inserts

Adhesive on both the internal and external threads keeps these inserts in place and holds screws tight.

Stainless Steel Helical Inserts

Stainless Steel Screw-Locking Helical Inserts

A distorted thread grips the screw to resist loosening.

Helical Inserts with Installation Tools

Inserts come with a through-hole tap and installation tool.

18-8 Stainless Steel Key-Locking Inserts

Made of 18-8 stainless steel, these inserts have good corrosion resistance.

Mil. Spec. Alloy Steel Key-Locking Inserts

The strongest key-locking inserts we offer, these inserts are made to stringent military specifications.

High-Strength A286 Stainless
Steel Key-Locking Inserts

The strongest and most corrosion-resistant stainless steel key-locking inserts we offer. Made of A286 stainless steel, these inserts stand up to salt water, harsh chemicals, and even high temperatures.

Mil. Spec. Stainless Steel Key-Locking Inserts

These inserts are made to stringent military specifications.

Black-Phosphate Steel Key-Locking Inserts

A black-phosphate finish provides mild corrosion resistance.

Closed-End Key-Locking Inserts

Protect threads from debris and leaks—these inserts have a closed end as a barrier.

Key-Locking Insert Assortments
with Installation Tool

Screw-Locking Key-Locking Inserts

Forming the strongest hold of any of our threaded inserts, these inserts have a distorted internal thread to lock screws into place and keys that drive into surrounding material to prevent slipping and rotating.

Key-Locking Inserts with Installation Tool

These inserts come with an installation tool. Drive the keys into the surrounding material for a more secure hold than thread-locking inserts.

Steel Key-Locking Insert Blanks

Tap the thread size you need into the solid body of these blanks. Made of steel, they’re stronger than stainless steel insert blanks.

Alloy Steel Thin-Wall Swage-Locking Inserts

Add or repair threads near the edges and corners of soft metal surfaces—these inserts have thinner walls than any of our key-locking and thread-locking inserts. Made of alloy steel, they’re stronger than our 17-4 PH stainless steel inserts.

17-4 PH Stainless Steel
Thin-Wall Swage-Locking Inserts

Position strong, corrosion-resistant threads close to the edges of soft metal surfaces. These inserts have thinner walls than our key-locking and thread-locking inserts, so they don’t need as much space around them.