Black Oxide Nuts | McMaster-Carr

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Metric Trapezoidal Class 7e

Unified Standard Class 2A

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3,594 Products

Fastening and Joining

Hex Nuts

Handle most general fastening needs

429 products

Locknuts

Hold fasteners in place to prevent loosening from vibration

197 products

Flange Nuts

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

177 products

Coupling Nuts

Connect and extend threaded rods

105 products

Push-Button Nuts

Disengage the threads to quickly slide along threaded rods

15 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

61 products

Panel Nuts

Extremely thin for tight spots such as electrical panels; also known as dress nuts

27 products

Cap Nuts

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

17 products

Square Nuts

Flat sides won’t spin in channels and square holes

4 products

Binding Barrels

Create custom low-profile fasteners with binding barrel posts, caps, and screws

289 products

Thread Adapters

Join threads of a different type, size, and gender

342 products

Shoulder Screws

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

36 products

Fastener Assortments

Keep a variety of common screws, nuts, and washers on hand

2 products

Studs

Press, weld, or screw in place to add a threaded fastening point

19 products

Threaded Inserts

Create new threads or repair stripped threads

43 products

Lock Washers

Resist vibration to prevent fasteners from loosening

30 products

Retaining Rings

Hold components on a shaft

14 products

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

951 products

Nutdrivers

Tighten and loosen nuts and bolts

30 products

Fabricating and Machining

T-Slot Nuts

Combine with setup studs or bolts to mount fixtures to machine tables

206 products

Setup Studs

Secure setup clamps and fixtures to your machine table or assemble heavy machines

266 products

T-Slot Bolts

Secure clamps and workpieces to machine tables with quicker setup than a T-slot nut and stud

91 products

Fixture Kits

Everything needed to mount workpieces of different sizes to your machine table

27 products

T-Slot Cleaners

Scrape debris out of machine table T-slots

1 product

Power Transmission

Lead Screw Collars

Position components and limit travel along a lead screw

41 products

Ball Screw Nuts

Internal ball bearings roll on ball screws for low friction when moving components

35 products

Ball Screws

Pair with a ball screw nut for low friction when moving components

6 products

Precision Lead Screw Nut Flanges

Pair with precision lead screw nuts to make custom flange nuts that move items along lead screws

5 products

Precision Lead Screws

Pair with precision lead screw nuts for accurate starts and stops in your assembly

114 products

Lead Screws

Pair with lead screw nuts to move components in a straight line

14 products