UNC Nuts | McMaster-Carr

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6,173 Products

Fastening and Joining

Hex Nuts

Handle most general fastening needs

Locknuts

Hold fasteners in place to prevent loosening from vibration

Flange Nuts

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

Coupling Nuts

Connect and extend threaded rods

Cap Nuts

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

Easy to tighten and loosen by hand for making frequent adjustments

Square Nuts

Flat sides won’t spin in channels and square holes

Tamper-Resistant Nuts

Tamper-Resistant Nuts

Hard to detach without special tools to prevent unwanted removal

Socket Nuts

Install in recessed holes and tight spots where a wrench won’t fit; also known as Allen nuts

Push-Button Nuts

Push-Button Nuts

Disengage the threads to quickly slide along threaded rods

Split Nuts

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

Sealing Nuts

Prevent leaks and block out contaminants with a rubber seal

Press-Fit Nuts

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

Weld Nuts

Weld to metal surfaces to add permanent threads

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Clip-On Nuts

Slide onto the edge of thin panels to create a fastening point

Screw-Mount Nuts

Screw-Mount Nuts

Mount with screws, rivets, and nails to add threads to a surface

Dowel Nuts

Form joints in blind holes in wood

Snap-In Nuts

Push into square holes in thin materials to add bolts for aligning off-center parts

Adhesive-Mount Nuts

Adhesive-Mount Nuts

Attach threads to material that’s too thin for a threaded insert

Tube-Connecting Nuts

Tube-Connecting Nuts

Push inside tubes to join them with a threaded stud instead of welding

Binding Barrels and Screws

Binding Barrels and Screws

Thread together for a low-profile fastener

Studs

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

Tighten and loosen by hand without the need for tools

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Joint Clamps for Wood

Joint Clamps for Wood

Make secure joints between boards, butcher blocks, and countertops

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Standoffs

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

Material Handling

Turnbuckles

Twist the body or end fittings to adjust the length and tension of attached rope and chain

Fabricating and Machining

Setup Studs

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

Building and Machinery Hardware

Leveling Mount Inserts

Leveling Mount Inserts

Slip onto equipment and furniture to add threaded-stud leveling feet

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