Threaded Washers | McMaster-Carr

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29,143 Products

Fastening and Joining

Hex Nuts

Handle most general fastening needs

Panel Nuts

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

Square Nuts

Flat sides won’t spin in channels and square holes

Flange Nuts

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

Easy to tighten and loosen by hand for making frequent adjustments

Slotted Round Nuts

Slotted Round Nuts

Fasten with a screwdriver in tight spots where there's no room for a wrench

Coupling Nuts

Connect and extend threaded rods

Cap Nuts

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

Sealing Nuts

Prevent leaks and block out contaminants with a rubber seal

Socket Nuts

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

Locknuts

Hold fasteners in place to prevent loosening from vibration

Split Nuts

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

Push-Button Nuts

Push-Button Nuts

Disengage the threads to quickly slide along threaded rods

Tamper-Resistant Nuts

Tamper-Resistant Nuts

Hard to detach without special tools to prevent unwanted removal

Lug Nuts

Secure pneumatic wheels to axles

Screw-Mount Nuts

Screw-Mount Nuts

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

Press-Fit Nuts

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

Adhesive-Mount Nuts

Adhesive-Mount Nuts

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

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

Snap-In Nuts

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

Dowel Nuts

Form joints in blind holes in wood

Rivet-Mount Nuts

Rivet-Mount Nuts

Add threads in hard-to-reach areas and materials that are too thin to be tapped

Studs

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

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Fastener Assortments

Fastener Assortments

Stay prepared by keeping fasteners in common sizes and materials on hand

Tighten and loosen by hand without the need for tools

Joint Clamps for Wood

Joint Clamps for Wood

Make secure joints between boards, butcher blocks, and countertops

Jack Screws

Secure computer cables and panels

Standoffs

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

Spacers

Unthreaded to create space between two surfaces or objects, often to align them

Binding Barrels and Screws

Binding Barrels and Screws

Thread together for a low-profile fastener

Retaining Rings

Retaining Rings

Hold components on a shaft

Lock Washers

Resist vibration to prevent fasteners from loosening

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Rivet Tools

Install and remove blind, solid, hollow, and other types of rivets

Rivet Nut Tools

Rivet Nut Tools

Install rivet nuts

Power Transmission

Shock Absorber Mounting Nuts

Shock Absorber Mounting Nuts

Secure shock absorbers after threading them into mounting blocks

Bearing Nuts

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

Lead Screws and Nuts

Lead Screws and Nuts

Components travel along a screw with broad, square threads to clamp and lift heavy loads

Lead and Ball Screw End Supports

Lead and Ball Screw End Supports

Brace and secure the ends of lead screws and ball screws

Ball Screws and Nuts

Ball Screws and Nuts

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

Roller Screws and Nuts

Roller Screws and Nuts

More contact points to move heavier loads than ball and lead screw assemblies

Fabricating and Machining

T-Slot Nuts

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

T-Slot Bolts

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

Fixturing Clamps

Fixturing Clamps

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

Setup Studs

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

T-Slot Fastener and Setup Stud Kits

T-Slot Fastener and Setup Stud Kits

Mount fixtures of different sizes to your machine table

T-Slot Fastener and Fixturing Clamp Kits

T-Slot Fastener and Fixturing Clamp Kits

Everything you need to secure a workpiece to a fixture table

Clamps

Hold workpieces securely in place

Lathe Chuck Jaw Nuts

Lathe Chuck Jaw Nuts

Secure jaws to a CNC lathe chuck

Building and Machinery Hardware

Strut Channel Framing and Fittings

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

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

Locking-Slotted Framing and Fittings

Locking-Slotted Framing and Fittings

Make platforms, bases, and other structures that stand up to more movement than T-slotted framing

Handle Nuts

Attach to threaded shafts to quickly turn the shafts by hand

Machine Handles

Machine Handles

Arms give you extra leverage to secure and position jigs, fixtures, and other equipment

Leveling Mount Inserts

Leveling Mount Inserts

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

Fluid Handling

Pipe and Pipe Fittings

Pipe and Pipe Fittings

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

Hose and Hose Fittings

Hose and Hose Fittings

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

Tube and Tube Fittings

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

Hose Crimpers

Crimp ferrules onto hose to secure fittings

Communication

Reference Books

Reference Books

Keep industrial information, regulations, and processes on hand

Material Handling

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

Turnbuckles

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

Electrical

Conduit and Conduit Fittings

Conduit and Conduit Fittings

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

Terminal Covers

Terminal Covers

Block out dirt and corrosion to protect battery terminals

Wire Splices

Join wire and protect the connection

Facility and Grounds Maintenance

Sink Drain Fittings

Sink Drain Fittings

Connect tailpieces, traps, and extension tubing to drains

Toilet Seat Fasteners

Toilet Seat Fasteners

Secure toilet seat hinges to your toilet bowl

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