External Hex Fasteners | McMaster-Carr

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23,627 Products

Fastening and Joining

Hex Head Screws

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

11,523 products

Tapping Screws

Fasten a range of materials together without needing to tap the hole first

1,093 products

Fastener Assortments

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

3 products

Wood Screws

Fasten material to wood or pieces of wood to each other

452 products

Concrete Screws

Anchor parts to concrete, block, and brick without tapping the hole first

84 products

Joint Clamps for Wood

Make secure joints between boards, butcher blocks, and countertops

2 products

Shoulder Screws

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

92 products

Set Screws

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

35 products

Thumb Screws

Tighten and loosen by hand without the need for tools

22 products

Hex Nuts

Handle most general fastening needs

3,199 products

Locknuts

Hold fasteners in place to prevent loosening from vibration

1,602 products

Panel Nuts

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

114 products

Flange Nuts

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

700 products

Coupling Nuts

Connect and extend threaded rods

492 products

Cap Nuts

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

421 products

Tamper-Resistant Nuts

Hard to detach without special tools to prevent unwanted removal

24 products

Split Nuts

Swivel to attach at any point on a threaded rod for quick installation

18 products

Push-Button Nuts

Disengage the threads to quickly slide along threaded rods

10 products

Sealing Nuts

Prevent leaks and block out contaminants with a rubber seal

27 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

6 products

Thread Adapters

Join threads of a different type, size, and gender

3,514 products

Push Nuts

Press onto threads for a light duty hold that’s faster to install than typical nuts

17 products

Anchors

Secure anything from signs to heavy machinery in concrete, brick, and drywall

14 products

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

35 products

Building and Machinery Hardware

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

5 products

Power Transmission

Lead Screws

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

27 products

Fabricating and Machining

Clamping Screws

Apply pressure through a flat-tipped screw to hold material in place

11 products

Fixture Clamps

Secure your workpiece to a fixture table so it won't move during machining

3 products

Electrical Power, Networking, and Controlling

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

3 products

Material Handling

Turnbuckle Nuts

Tighten against a turnbuckle body to prevent the end fitting from unscrewing

34 products

Hoist Rings

Pivot to resist stress that would bend or break an eyebolt when lifting at an angle

34 products