Stainless Steel Hex Locknuts

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688 Products

About Nuts, Materials, and Finishes

18-8 Stainless Steel Nylon-Insert Locknuts

These locknuts have good chemical resistance.

Metric 18-8 Stainless Steel Nylon-Insert Locknuts

These metric locknuts have good chemical resistance.

Mil. Spec. 18-8 Stainless Steel Nylon-Insert Locknuts

Choose these locknuts for their adherence to strict military standards for material and construction.

Super-Corrosion-Resistant 316
Stainless Steel Nylon-Insert Locknuts

More corrosion resistant than 18-8 stainless steel locknuts, these locknuts have excellent resistance to chemicals and salt water.

Metric Super-Corrosion-Resistant 316
Stainless Steel Nylon-Insert Locknuts

More corrosion resistant than 18-8 stainless steel locknuts, these metric locknuts have excellent resistance to chemicals and salt water.

18-8 Stainless Steel Thin Nylon-Insert Locknuts

These locknuts have good chemical resistance and may be mildly magnetic.

Mil. Spec. 18-8 Stainless Steel
Thin Nylon-Insert Locknuts

Choose these locknuts for their adherence to strict military standards for material and construction.

Super-Corrosion-Resistant 316 Stainless
Steel Thin Nylon-Insert Locknuts

More corrosion resistant than 18-8 stainless steel locknuts, these have excellent resistance to chemicals and salt water.

18-8 Stainless Steel Thin
Heavy Nylon-Insert Locknuts

These locknuts have good chemical resistance.

Super-Corrosion-Resistant 316 Stainless
Steel Thin Heavy Nylon-Insert Locknuts

More corrosion resistant than 18-8 stainless steel locknuts, these have excellent resistance to chemicals and salt water.

18-8 Stainless Steel Heavy Nylon-Insert Locknuts

These locknuts have good chemical resistance.

Super-Corrosion-Resistant 316 Stainless
Steel Heavy Nylon-Insert Locknuts

More corrosion resistant than 18-8 stainless steel locknuts, these have excellent resistance to chemicals and salt water.

18-8 Stainless Steel Top-Lock
Distorted-Thread Locknuts

These locknuts have good chemical resistance.

Super-Corrosion-Resistant 316 Stainless
Steel Top-Lock Distorted-Thread Locknuts

More corrosion resistant than 18-8 stainless steel locknuts, these have excellent resistance to chemicals and salt water.

18-8 Stainless Steel Center-Lock
Distorted-Thread Locknuts

These locknuts have good chemical resistance.

Super-Corrosion-Resistant 316 Stainless
Steel Center-Lock Distorted-Thread Locknuts

More corrosion resistant than 18-8 stainless steel locknuts, these have excellent resistance to chemicals and salt water.

Stainless Steel Flex-Top
Locknuts for Heavy Vibration

Made from 18-8 stainless steel, these flex top locknuts have good chemical resistance and may be mildly magnetic.

Metric Stainless Steel Flex-Top
Locknuts for Heavy Vibration

Made from stainless steel, these metric flex-top locknuts resist chemicals and may be mildly magnetic.

Mil. Spec. Stainless Steel Flex-Top
Locknuts for Heavy Vibration

Choose these locknuts for their adherence to strict military standards for material and construction.

Stainless Steel Thin Flex-Top
Locknuts for Heavy Vibration

Stainless steel locknuts have excellent corrosion resistance in most environments.

Stainless Steel Heavy Flex-Top
Locknuts for Heavy Vibration

Stainless steel locknuts have excellent corrosion resistance in most environments.

Stainless Steel Locknuts with
External-Tooth Lock Washer

These stainless steel locknuts have good chemical resistance and may be mildly magnetic.

Metric Stainless Steel Locknuts
with External-Tooth Lock Washer

These metric stainless steel locknuts have good chemical resistance and may be mildly magnetic.

Stainless Steel Narrow Locknuts
with External-Tooth Lock Washer

Use these locknuts in tight spaces where standard locknuts won’t fit since they’re about 20% narrower. They have good chemical resistance and may be mildly magnetic because they’re made from 18-8 stainless steel.

Stainless Steel Locknuts for use with Cotter Pins

Stainless steel locknuts have excellent corrosion resistance in most environments.

Metric Stainless Steel Spring-Stop Locknuts

For a secure hold where chemicals are a concern, these stainless steel locknuts have a spring that creates tension when tightened. Also known as Fuji locknuts.

Flange Locknuts

Stainless Steel Nylon-Insert Flange Locknuts

Metric Stainless Steel Nylon-Insert Flange Locknuts

Stainless Steel Distorted-Thread Flange Locknuts

These flange locknuts have excellent resistance to chemicals and salt water. They have an irregularly shaped thread that grips the bolt for a stronger hold than nylon-insert flange locknuts.

18-8 Stainless Steel Serrated Flange Locknuts

Made from 18-8 stainless steel, these flange locknuts have good chemical resistance and may be mildly magnetic

Metric 18-8 Stainless Steel
Serrated Flange Locknuts

Metric 18-8 stainless steel is also known as A2 stainless steel. These flange locknuts have good chemical resistance and may be mildly magnetic.

Super-Corrosion-Resistant 316 Stainless
Steel Serrated Flange Locknuts

These flange locknuts have excellent resistance to chemicals and salt water.

Metric Super-Corrosion-Resistant 316
Stainless Steel Serrated Flange Locknuts

Metric 316 stainless steel is also known as A4 stainless steel. These flange locknuts have excellent resistance to chemicals and salt water.

Cap Locknuts

18-8 Stainless Steel Distorted-Thread Cap Locknuts

An irregularly shaped thread grips the bolt for a stronger hold than nylon-insert cap locknuts. Made of 18-8 stainless steel, these cap locknuts have good chemical resistance.

Metric 18-8 Stainless Steel
Vibration-Resistant Cap Locknuts

To resist loosening from vibration, these metric locknuts have a nylon patch bonded to their threads that adds friction. They have good chemical resistance and may be mildly magnetic because they’re stainless steel.

18-8 Stainless Steel
Vibration-Resistant Cap Locknuts

A nylon patch bonded to the threads of these reusable nuts adds friction to prevent loosening under vibration.

Super-Corrosion-Resistant 316 Stainless
Steel Vibration-Resistant Cap Locknuts

With a nylon patch bonded to their threads for added friction, these nuts resist coming loose from vibration. They’re 316 stainless steel, so they have excellent resistance to chemicals and salt water.

Super-Corrosion-Resistant 316 Stainless
Steel Distorted-Thread Cap Locknuts

With an irregularly shaped thread, these locknuts grip the bolt for a stronger hold than nylon-insert cap nuts and resist loosening from vibration. They’re made from 316 stainless steel, so they have excellent resistance to chemicals and salt water.

Stainless Steel Hex Panel Nuts

All of these stainless steel panel nuts have some chemical resistance.

Press-Fit Nuts for Sheet Metal

Flush-Mount Press-Fit Nuts for Sheet Metal

A flat hex head sits flush against the material surface for use in low-clearance applications.

Metric Stainless Steel Press-Fit Nuts for Sheet Metal

These metric nuts have good chemical resistance and may be mildly magnetic.

Tamper-Resistant Breakaway Nuts

The most tamper-resistant nuts we offer, these have a hex head that breaks away upon tightening, leaving a non-removable cone. Install with a standard wrench.

18-8 Stainless Steel Sealing Hex Nuts

Stainless steel sealing nuts have excellent corrosion resistance in most environments.

Stainless Steel Slip-On Twist-Close Nuts

Stainless steel nuts have excellent corrosion resistance in most environments.

Locknut Assortments

Nylon-Insert Locknut Assortments

A nylon insert grips threads to resist loosening.

Assortments of Locknuts with
External-Tooth Lock Washer

Teeth bite into surfaces for easy installation and mild vibration resistance.

About Nuts, Materials, and Finishes

Locknuts

18-8 Stainless Steel Nylon-Insert Locknuts

Metric 18-8 Stainless Steel Nylon-Insert Locknuts

Mil. Spec. 18-8 Stainless Steel Nylon-Insert Locknuts

Super-Corrosion-Resistant 316Stainless Steel Nylon-Insert Locknuts

Metric Super-Corrosion-Resistant 316Stainless Steel Nylon-Insert Locknuts

18-8 Stainless Steel Thin Nylon-Insert Locknuts

Mil. Spec. 18-8 Stainless SteelThin Nylon-Insert Locknuts

Super-Corrosion-Resistant 316 StainlessSteel Thin Nylon-Insert Locknuts

18-8 Stainless Steel ThinHeavy Nylon-Insert Locknuts

Super-Corrosion-Resistant 316 StainlessSteel Thin Heavy Nylon-Insert Locknuts

18-8 Stainless Steel Heavy Nylon-Insert Locknuts

Super-Corrosion-Resistant 316 StainlessSteel Heavy Nylon-Insert Locknuts

18-8 Stainless Steel Top-LockDistorted-Thread Locknuts

Super-Corrosion-Resistant 316 StainlessSteel Top-Lock Distorted-Thread Locknuts

18-8 Stainless Steel Center-LockDistorted-Thread Locknuts

Super-Corrosion-Resistant 316 StainlessSteel Center-Lock Distorted-Thread Locknuts

Stainless Steel Flex-TopLocknuts for Heavy Vibration

Metric Stainless Steel Flex-TopLocknuts for Heavy Vibration

Mil. Spec. Stainless Steel Flex-TopLocknuts for Heavy Vibration

Stainless Steel Thin Flex-TopLocknuts for Heavy Vibration

Stainless Steel Heavy Flex-TopLocknuts for Heavy Vibration

Stainless Steel Locknuts withExternal-Tooth Lock Washer

Metric Stainless Steel Locknutswith External-Tooth Lock Washer

Stainless Steel Narrow Locknutswith External-Tooth Lock Washer

Stainless Steel Locknuts for use with Cotter Pins

Metric Stainless Steel Spring-Stop Locknuts

Flange Locknuts

Stainless Steel Nylon-Insert Flange Locknuts

Metric Stainless Steel Nylon-Insert Flange Locknuts

Stainless Steel Distorted-Thread Flange Locknuts

18-8 Stainless Steel Serrated Flange Locknuts

Metric 18-8 Stainless SteelSerrated Flange Locknuts

Super-Corrosion-Resistant 316 StainlessSteel Serrated Flange Locknuts

Metric Super-Corrosion-Resistant 316Stainless Steel Serrated Flange Locknuts

Cap Locknuts

18-8 Stainless Steel Distorted-Thread Cap Locknuts

Metric 18-8 Stainless SteelVibration-Resistant Cap Locknuts

18-8 Stainless SteelVibration-Resistant Cap Locknuts

Super-Corrosion-Resistant 316 StainlessSteel Vibration-Resistant Cap Locknuts