Key-Locking Inserts | McMaster-Carr

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778 Products

How to Install Key-Locking Inserts

18-8 Stainless Steel Key-Locking Inserts

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

Black-Phosphate Steel Key-Locking Inserts

A black-phosphate finish provides mild corrosion resistance.

Mil. Spec. Stainless Steel Key-Locking Inserts

These inserts are made to stringent military specifications.

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.

Aligning Key-Locking Inserts

Install threads that align with off-center parts. These inserts have floating threads that account for misalignment, allowing you to insert screws at a slight angle as you fasten two parts together.

Closed-End Key-Locking Inserts

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

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.

Key-Locking Insert Assortments
with Installation Tool

18-8 Stainless Steel Key-Locking Insert Blanks

Tap the thread size you need into the solid body of these blanks. Made of 18-8 stainless steel, they resist corrosion from mild chemicals and water.

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.

Threaded Insert Tools

Installation Tools for Key-Locking Inserts

Place the tip of these tools into an insert and strike them with a hammer to drive the keys into the material. They’re compatible with Keensert® inserts.

Heavy Duty Installation Tools
for Key-Locking Inserts

Install key-locking inserts, including Keensert®-style inserts.

Installation Tools for Aligning Key-Locking Inserts

Leave hand fatigue behind when installing lots of aligning key-locking inserts.

Installation Tools for Key-Locking Insert Blanks

Strike these tools with a hammer to drive key-locking insert blanks into your material.