Nylon Locknuts | McMaster-Carr

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2,751 Products

Locknuts

Nylon-Insert Locking About Nylon-Insert Locking

Nylon-Insert Locknuts

Versatile and economical—the most commonly used locknuts

468 products

Thin-Profile Nylon-Insert Locknuts

About half the height of standard nuts to fit in spaces with low clearance

164 products

Heavy-Profile Nylon-Insert Locknuts

About 10% wider and taller than standard nuts to handle heavier loads

31 products

High-Profile Nylon-Insert Locknuts

Larger gripping area keeps wrenches from slipping off as you tighten

49 products

Thin-Heavy-Profile Nylon-Insert Locknuts

Fit in low-clearance spaces and handle heavier loads than standard nuts

33 products

Mil. Spec. Nylon-Insert Locknuts

Meet strict U.S. military standards for material and construction

21 products

Mil. Spec. Thin-Profile Nylon-Insert Locknuts

Meet U.S. military standards and are half the height of standard nuts to fit in low-clearance spaces

17 products

Nylon-Insert Locknut Assortments

A range of sizes to fasten a variety of parts

2 products

Thread-Forming Lock About Thread-Forming Lock

Thread-Forming Locknuts

Form threads into these nuts for a tight fit that won't loosen under vibration

7 products

Other Products

Flange Nuts

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

80 products

Bearing Locknuts

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

163 products

Conduit Locknuts

Secure threaded conduit fittings to knockouts in electrical boxes

48 products

Cap Nuts

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

47 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

8 products

Shoulder Screws

Rotate parts around the cylinder under the head to guide and align them during installation

339 products

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

15 products

Socket Head Screws

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

398 products

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

2 products

Rounded Head Screws

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

291 products

Hex Head Screws

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

70 products

Flat Head Screws

Fit in countersunk holes for a flush finish

162 products

Set Screws

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

336 products