DIN Locknuts | McMaster-Carr

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Corrosion-Resistant Coated

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Corrosion Resistant

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1,453 Products

Locknuts

Nylon-Insert Locking About Nylon-Insert Locking

About Nylon-Insert Locking

Nylon-Insert Locknuts

Nylon-Insert Locknuts

Versatile and economical—the most commonly used locknuts

High-Profile Nylon-Insert Locknuts

Larger gripping area keeps wrenches from slipping off as you tighten

Distorted-Thread Locking About Distorted-Thread Locking

About Distorted-Thread Locking

Top-Lock Distorted-Thread Locknuts

Top-Lock Distorted-Thread Locknuts

Irregularly shaped threads at the top grip screws tighter than a nylon insert

Cotter-Pin Lockable About Cotter-Pin Lockable

About Cotter-Pin Lockable

Locknuts for use with Cotter Pins

Locknuts for use with Cotter Pins

Secure rotating parts subjected to mild vibration, such as wheels on carts

Other Products

Flange Nuts

The flange distributes pressure, so you don't need a washer

Bearing Nuts

Hold bearings, bushings, pulleys, and gears in place on threaded shafts and spindles

Bearing Lock Washers

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

Pipe Locknuts

Thread onto the male end of a pipe fitting so it won't loosen from vibration

Lock Washers

Resist vibration to prevent fasteners from loosening

Socket Head Screws

Socket Head Screws

With a deeper drive than flat and rounded head screws, these withstand more torque for a tighter hold

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish

Set Screws

Exert pressure at the tip to hold parts in place, unlike screws that hold material together with threads

Rounded Head Screws

Rounded Head Screws

Sit just above the surface for a low-profile finish and hold tighter than flat head screws

Hex Head Screws

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)