Joiners | McMaster-Carr

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71,273 Products

Most Likely Products

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

271 products

Pipe and Pipe Fittings

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

23,451 products

Wire Splices, Connectors, and Taps

Join wire and protect the connection

390 products

All Results

Building and Machinery Hardware

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

271 products

T-Slotted Framing and Fittings

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

2,260 products

Press-Fit Framing and Fittings

Set up temporary partitions, guards, and displays using only a hammer

90 products

Slip-On Framing and Fittings

Insert rails into fittings and tighten screws to make guards, railings, and racks

409 products

Flush-Fit Framing and Fittings

Create smooth stair and platform railings by sliding fittings into rails and tightening the screws

10 products

Bolt-Together Framing and Fittings

Fasten through equally spaced holes to build and adjust guards, tables, and racks

125 products

Locking-Slotted Framing and Fittings

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

12 products

Strut Channel Framing and Fittings

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

844 products

Weld-Together Framing and Fittings

Permanently join rails and fittings to assemble heavy duty racks, shelving, and work tables

40 products

Brackets

Connect surfaces in an assembly

350 products

Panel Hanging Brackets

Mount and remove panels

131 products

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

70 products

Push-to-Close Latches

Automatically hold doors shut when you push them closed

9 products

Fluid Handling

Pipe and Pipe Fittings

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

23,451 products

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

15,633 products

Tube Fitting Clamps

Quickly secure connections between tube fittings, including sanitary and high-vacuum fittings

145 products

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

381 products

Hose Clamps

Connect hose to barbed hose fittings

1 product

Pipe Joiners

Connect heavy and difficult-to-position gasketed pipe without powered equipment

1 product

Tube Repair Clamps

Mend small holes, cracks, and full-circle breaks in tubing without dismantling your system

18 products

On-Off Valves

Start and stop flow through a line

4,080 products

Float Valve Bodies

Pair with floats and rods to create float valves that meet your needs

61 products

Electrical

Wire Splices, Connectors, and Taps

Join wire and protect the connection

390 products

Wire Splice Covers

Seal out dust and moisture to protect electrical connectors

3 products

Electrical Adapters

Change electrical connectors to another type, size, or gender

58 products

Electrical Connector Seals

Add to the front or back of connectors to block out dust, debris, and weather

5 products

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

673 products

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

934 products

Electrical Receptacles

Install in a wall or panel to transmit power or data to plugs or sockets

1,008 products

Electrical Cord Locks

Cover mated connectors on extension cords to prevent disconnection

5 products

Distribution Bars

Route electricity within switchboards and battery banks; also known as bus bars

31 products

Terminals, Ferrules, and Lugs

Attach to the end of wire to connect circuits in control panels, motors, and machinery

1,269 products

Terminal Blocks

Create tidy rows of wire connections that you can identify, test, and adjust on the spot

699 products

Terminal Splitters

Divide one male quick-disconnect connection into two

4 products

Terminal and Splice Kits

Maintain a supply of extra terminals and splices to join and terminate wire

17 products

Distribution Blocks

Distribute electricity from a single power source to several devices in a circuit

47 products

Distribution Posts

Send power from one source to several devices in a circuit in less space than a distribution block

4 products

Electrical Cords

Connect equipment and devices to a power supply

2,328 products

Electrical Connector Contacts

Crimp wire into pins and sleeves to create custom Molex or Amphenol connectors

26 products

Electrical Connector Boots

Protect connectors and cords from strain, bends, and pulls

2 products

Circuit Board Terminals

Connect wire to circuit boards

9 products

Terminal Adapters

Convert wire terminals from one connection type or gender to another

7 products

Electrical Connector Holding Tools

Hold electrical connectors in place to safely join wires

1 product

Electrical Connector Caps

Protect data connectors when not in use

78 products

Slip Rings

Maintain an electrical link between a moving part and a stationary part

4 products

Electrical Connector Thread Adapters

Join two connectors that both have internal threads

6 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

1,189 products

Conduit and Conduit Fittings

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

1,062 products

DIN Rail Mounting Adapters

Attach to components not made for DIN rail and clip on to install

15 products

Weatherheads

Bring power into buildings and protect the entry point from rain and snow

10 products

Cable Entry Panels

Pass multiple cords into an enclosure while sealing out moisture, dust, and other contaminants

120 products

Interference Suppressing Clips

Shield cable from EMI and RFI that can distort signals; also known as ferrite beads

64 products

Grounding Lugs

Create a common grounding path for internal components and circuits, as well as the enclosure body

1 product

Grounding Blocks

In cabinets and other tight spaces, ground multiple wires at one convenient spot

8 products

Grounding Bars

Create a convenient central grounding point by connecting multiple ground wires

14 products

Battery Connectors

Quickly make and break connections between a battery and a charger or equipment

43 products

Battery Terminals

Connect cable to battery posts to power vehicles and machines

131 products

Manual Switches

Everything from toggle, push-button, and rocker switches to foot switches

2 products

Light Switch/Receptacles

Combine a switch and receptacle into a single outlet box for a small footprint

2 products

Fastening and Joining

Wood Joiners

Connect and repair wood pieces and joints

9 products

Dowel Pins

Align parts before assembly or use as a pivot, shaft, or hinge to join moving components

3,556 products

Dowel Pin Stock

Cut to the length you need for positioning and holding parts in place

53 products

Binding Barrels

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

884 products

Joint Clamps for Wood

Make secure joints between boards, butcher blocks, and countertops

3 products

Studs

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

673 products

Dowel Nuts

Form joints in blind holes in wood

11 products

Snap-In Nuts

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

99 products

Weld Nuts

Weld to metal surfaces to add permanent threads

589 products

Adhesive-Mount Nuts

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

166 products

Document Clips

Hold loose papers together without creating a permanent mark

24 products

Single-End Studs

Use the unthreaded end as a pivot point, hinge, shaft, or locator pin

184 products

Anchors

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

970 products

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

66 products

Panel Clips

Slide over the edge of two or more panels to hold them together without tools or fasteners

3 products

Welding Lugs

Screw, hammer, or crimp on to secure welding cable connections

13 products

Fabricating and Machining

Clamps

Hold workpieces securely in place

752 products

Clamp Holding Screws

Replace worn holding screws in clamps or customize with different sizes or styles

52 products

Clamp Holding Washers

Replace worn washers on open-arm toggle clamps to keep holding screws in place

12 products

Clothespins

Hold light items, secure covers, and seal bags

4 products

Swivel Pads

Attach to the ends of screws, threaded studs, or C-clamps to apply even pressure on uneven surfaces

8 products

Holders for Locking Pliers

Secure to a table or benchtop and slide in locking pliers for a hands-free way to hold your work

1 product

Fixture Clamps

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

375 products

Support Blocks

Support setup clamps for quick height adjustments

3 products

Fixture Kits

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

48 products

Alignment Locks

Precisely align your mold halves

25 products

Containers, Storage, and Furniture

Toilet Partitions

Separate toilets and urinals for privacy

120 products

Toilet Partition Door Hardware

Replace the hinges, latches, hooks, and handles on toilet partitions

7 products

Toilet Partition Color Samples

See the color choices before ordering toilet partitions

3 products

Toilet Partition Mounting Hardware

Mount and connect toilet and urinal partition components

20 products

Toilet Partition Trim Shoes

Replace the trim shoes on the bottom of toilet partition columns

33 products

Metal Panels

Close off openings in structures while allowing air to pass through

254 products

Stacking Caps and Targets

Turn the ends of posts into stackable shelving and rack systems

6 products

Power Transmission

Pulley and Sprocket Bushings

Mount between a rotating shaft and equipment to secure the shaft and reduce vibration

721 products

Belt Joining Kits

Everything you need to soften belt ends and join them together

12 products

V-Belt Connectors

Join ends of adjustable-length V-belting

4 products

Material Handling

Conveyor Belt Lacing Clips

Hold belt lacing in place during installation

4 products

Conveyors

Roller, skate wheel, ball transfer, belt, and vacuum conveyors

14 products

Conveyor Belt Lacing

Join conveyor belt ends with a strong, reliable connection; easier to install than endless belts

266 products

Conveyor Belt Lacers

Install hook- or staple-style conveyor belt lacing

23 products

Conveyor Belt Lacing Templates

Guide hole-punching and belt-cutting when installing bolt-on lacing

9 products

Conveyor Belt Lacing Pins

Insert and lock in place to connect belt lacing ends

79 products

Conveyor Guide Clamps

Connect conveyor guides to each other and secure them in place

39 products

Conveyor Accessory Mounts

Position guides or sensors to the exact spot needed for your conveyor

54 products

Ring Links

Bend, hammer, or twist closed to connect chain links and attach fittings

47 products

Scaffold Clamps

Construct scaffolding and secure supports, such as railings

2 products

Forklift Tie-Down Clamps

Create anchor points on forklift forks to secure loads for transport

1 product

Measuring and Inspecting

Power Consumption Meters

Measure the amount of power your devices consume to help calculate energy costs

1 product

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

2 products

Micrometer Head Mounting Brackets

Mount a micrometer head to your jig or fixture to accurately position workpieces

16 products

Raw Materials

Wood

Commonly used to build ramps, crates, and prototypes or to make repairs

80 products

Carbon Fiber

The strongest composite we offer; comparable in strength to 6061 aluminum but lighter in weight

12 products

Facility and Grounds Maintenance

Rebar

Reinforces concrete to reduce the chance it will crack from expansion and contraction

9 products

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

4 products

Safety Equipment

Chain Barrier Links

Split in half and snap back together to securely connect lengths of chain

6 products

Communication

Tag Rings

Loop onto tags to attach them to lanyards, key rings, and other objects

59 products