Nylock | McMaster-Carr

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Cadmium Yellow-Chromate Plated

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Zinc Plated

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Fastener Strength Grade/Class

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Unified Standard Class 2A

Unified Standard Class 2B

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DFARS Specialty Metals

Length

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Drive Style

Spring Plunger Wrench

Torx

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Compliant

Compliant with Exemptions

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REACH

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Export Control Classification Number (ECCN)

EAR99

Insert Maximum Temperature

Flange Diameter

3,867 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

Other Products

Flange Nuts

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

80 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

8 products

Cap Nuts

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

47 products

Socket Head Screws

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

426 products

Rounded Head Screws

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

306 products

Set Screws

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

336 products

Press-Fit Nuts

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

15 products

Flat Head Screws

Fit in countersunk holes for a flush finish

162 products

Bearing Locknuts

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

163 products

Hex Head Screws

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

70 products

Shoulder Screws

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

339 products

Spring Plungers

Apply accurate, consistent pressure for positioning, indexing, and ejecting parts

1,007 products

Standoffs

Threaded to separate or connect parts as well as position components in assemblies

69 products

Knobs

Position, tighten, and secure fixtures and equipment

24 products

Binding Barrels and Screws

Thread together for a low-profile fastener

20 products