Metric Joints | McMaster-Carr

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High-Polish Quick-Clamp Fittings

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DFARS Specialty Metals

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13,351 Products

Power Transmission

Rod Ends

Use with connecting rods to support loads and control steering, tensioning, or pivoting motion

556 products

Rod End Nuts

Attach to rods, pipe, and tubing to make pivot and hinge points

8 products

Swivel Joints

Handle shaft misalignment where ball joint rod ends won’t fit; also known as spherical bearings

34 products

Rod End Seals

Keep dirt out and lubrication in to extend the life of rod ends

8 products

Rod End Inserts

Attach to rod ends to increase the amount of misalignment they can handle

5 products

Flexible Shaft Couplings

Connect two shafts that are misaligned to transfer rotary motion from one to the other

793 products

U-Joints

Transfer torque between shafts at an angle; handle more torque and misalignment than flexible shafts

18 products

Rigid Shaft Couplings

Join two shafts that are aligned and handle higher torque than flexible shaft couplings

280 products

Bore Reducers

Adapt the bore of a component to a smaller size for mounting on a shaft

13 products

Gas Spring End Fittings

Connect gas springs to mounting studs and brackets

73 products

Flanged Sleeve Bearings

A sleeve and thrust bearing in one to support both parallel and perpendicular loads

14 products

Bearing Adapter Sleeves

Close gaps between your bearing and shaft for a tight fit

15 products

Torque Limiters

Keep torque at or below a set limit to control tension or braking or protect machinery from overload

14 products

Air Flow Control Valves

Control the speed of air-powered equipment by adjusting the volume of airflow entering or exiting

44 products

Building and Machinery Hardware

T-Slotted Framing and Fittings

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

848 products

Strut Channel Framing and Fittings

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

474 products

Flush-Fit Framing Rails

Join flush-fit framing rails to build smooth stair and platform railings

1 product

Clamp-On Framing Rails

Build assembly stations, conveyors, and racks that can be modified without dismantling them

8 products

Brackets

Connect surfaces in an assembly

105 products

Hinges

Mount to doors and panels so they can swing open and closed

4 products

Joint Covers

Shield rotating joints to keep lubricants in and contaminants out

3 products

Fluid Handling

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

1,973 products

Pipe Locknuts

Thread onto the male end of a pipe fitting so it won't loosen from vibration

18 products

Tube Fittings

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

4,453 products

Tubing

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

10 products

Hose Fittings

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

64 products

Manifolds

Distribute air or fluid to multiple places from a single source; also called headers

8 products

Junction Blocks

Organize and separate multiple lines in a pipe system; air and fluid flow through the threaded holes

2 products

Manual On/Off Valves

Start and stop flow through a line

3 products

Air-Actuated On/Off Valves

Operate on compressed air to start and stop flow faster than motor-driven valves

3 products

Fastening and Joining

Thread Adapters

Join threads of a different type, size, and gender

2,334 products

Weld Nuts

Weld to metal surfaces to add permanent threads

3 products

Sockets

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

66 products

Bit Sockets

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

10 products

Driver Extension Adapters

Create a tool that’s as long as you need to reach deeply recessed fasteners

18 products

Fabricating and Machining

Drill Bushings

Fit in holes to guide drill bits and other cutting tools for precise and repeatable holes and cuts

736 products

Die Bushings

Guide pins and punches in molds and stamping dies or reduce friction between ejector pins and plates

3 products

Electrical Power, Networking, and Controlling

Safety Switches

Protect people by cutting power to machines when access doors open; also known as interlock switches

10 products

Conduit Elbows

Join conduit with 45°, 90°, offset, and adjustable-angle connectors

26 products

Material Handling

Conveyor T-Slot Bolts

Drop into the T-slot to mount components

12 products

Lubricating

Coolant Nozzle and Hose Adapters

Connect threaded coolant nozzles and hose to coolant supply ports on equipment such as CNC machines

3 products

Heating, Ventilation, and Air Conditioning

Duct Flanges

Mount on equipment to start a run of duct, or create a secure joint between two sections

20 products