NAS Threaded Inserts | McMaster-Carr

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535 Products

How to Install Helical Inserts

About Helical Insert Length

Stainless Steel Screw-Locking Helical Inserts

A distorted thread grips the screw to resist loosening.

Lubricated Stainless Steel
Screw-Locking Helical Inserts

A dry film keeps the screw from sticking or binding in these inserts during installation.

Stainless Steel Helical Inserts without Prong

Without a prong to break off and retrieve, these inserts are often used where debris could cause damage.

Lubricated Stainless Steel
Helical Inserts without Prong

A dry film keeps the screw from sticking or binding in these inserts during installation.

Screw-Locking Helical Inserts without Prong

A distorted thread grips the screw to resist loosening.

Key-Locking Inserts for Soft Metal

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.

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.

Stainless Steel Screw-Locking Aligning Press-Fit Nuts for Sheet Metal

Stainless Steel Screw-Locking Aligning
Press-Fit Nuts for Sheet Metal

Irregularly shaped threads in these press-fit nuts form a tight grip, preventing screws from backing out in vibration-heavy environments. Use these nuts to install corrosion-resistant threads that align with off-center parts.