Metric Guides | McMaster-Carr

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Compliant with Exemptions

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Pipe Size

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5,844 Products

Most Likely Products

Grommets

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

50 products

Drill Bushings

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

736 products

Carriages

Carry loads along guide rails on accurate and repeatable paths in automated systems

373 products

Loop Clamps

Hold pipe snug against the mounting surface to prevent movement that may cause breakage

214 products

All Results

Building and Machinery Hardware

Grommets

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

50 products

Strut Channel Framing and Fittings

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

64 products

T-Slotted Framing and Fittings

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

7 products

Door Track Hangers

Attach doors, strip doors, and curtains to track

1 product

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

Locating Pins

Install in fixturing plates or tables to position and secure workpieces

34 products

Locating and Support Buttons

Secure and position workpieces and fixtures from the bottom or side

29 products

Die Bushings

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

3 products

Spring Locating Pins

Apply side force to workpieces to clamp them in place

37 products

Fixture Tables

Add clamps, brackets, and other components to build fixtures for welding and assembly

15 products

Fixture Clamps

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

27 products

Slotted Bushings

Pair with a standard bushing to prevent alignment pins from binding in your fixture

7 products

Core Pins

Add to molds and pour in plastic to form holes in finished parts

112 products

Ejector Pins

Push finished parts out of molds

136 products

Electrical Discharge Machining Electrode Guides

Hold EDM electrodes in place as they penetrate workpieces

2 products

Filament Guides for 3D Printer Extruder Heating Elements

Hold and direct filament toward the nozzle as it melts in the heating block

3 products

Drill Bit Guides

Drill precise holes without building a fixture

2 products

Power Transmission

Carriages

Carry loads along guide rails on accurate and repeatable paths in automated systems

373 products

Guide Rails

Use for short-travel, high-speed applications that require low friction

20 products

Telescoping Rails

Carry heavy loads, such as in pick-and-place applications, machine tool doors, and press arms

40 products

Linear Bearings

Minimize friction as parts move along a shaft

318 products

Linear Bearing Brakes

Lock bearings in place on a shaft for precise positioning

4 products

Track Rollers

Support and carry objects as they move along conveyor systems

216 products

Drive Rollers

Transmit power from motors to systems like conveyors; also known as contact wheels and feed rollers

14 products

Positioning Slides

A lead screw drives the carriage for accurate positioning in laboratory and production equipment

25 products

Electric Slides

Move parts with precision in electronics, robotics, and other automated processes

65 products

Air Slides

Convey grippers, printing heads, and other loads back and forth on a carriage

114 products

Electric Actuators

Push and pull loads with more precise positioning than air and hydraulic cylinders

29 products

Linear Shaft Supports

Support linear shafts to prevent bending and rolling under loads

72 products

Ball Splines and Bearings

Combine ball splines and bearings to create linear and rotary motion systems

51 products

Ball Screw Nuts

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

6 products

Material Handling

Loop Clamps

Hold pipe snug against the mounting surface to prevent movement that may cause breakage

214 products

Pipe Hangers

Suspend pipe, conduit, and tube from rods, hooks, and straps

80 products

U-Bolts

Anchor heavy pipe, tube, and conduit; stronger than routing clamps and hangers

20 products

Routing Clamps

Secure routed lines of pipe, tubing, and conduit

68 products

Pipe Supports

Brace pipe, tube, and conduit that needs to be routed between studs or elevated off the floor

18 products

Conveyor Guide Mounting Rods

Secure guides and other attachments to conveyors

54 products

Hoist Rings

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

127 products

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

42 products

Eyebolts

Route rope through the loop or attach hooks and shackles for lifting

101 products

Measuring and Inspecting

Thread Size Identifiers

Confirm your fastener's thread size, pitch, or threads per inch

19 products

Coordinate Measuring Machine Plates and Fixtures

Raise workpieces and position them on a fixture plate

52 products

Coordinate Measurement Machine Probes

Take 3D measurements of workpieces on your CMM or CNC machine to inspect for quality

49 products

Height Gauges

Measure an object's height and mark workpieces for machining

39 products

Drill Bit Size Gauges

Match your drill bit to one of the holes to confirm its size

1 product

Pipe Size Chart/Rulers

Curl around pipe to gauge its size, measure its diameter, or mark lines

3 products

Squareness Gauges

Check frames and machined parts to see if they are leaning or uneven

3 products

Gear Tooth Gauges

Identify your gear's pressure angle, pitch, and module

2 products

Parallel Rules

Draw parallel lines, as well as circles, arcs, and angles

1 product

Alignment Pins

Line up holes in sheet metal, I-beams, and angle irons for bolting, riveting, and welding

15 products

Fastening and Joining

Dowel Pins

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

1,154 products

Taper Pins

Fit snugly into tapered holes to secure, position, and align components

232 products

Quick-Release Pins

Fasten or remove components on equipment with a spring-loaded retaining ball

283 products

Spring Plungers

Apply accurate, consistent pressure for positioning, indexing, and ejecting parts

263 products

Spring Plunger Drivers

Install spring plungers from the nose end without depressing the nose

7 products

Communication

Reference Charts

Check decimal equivalents, drill sizes, or specifications for socket screws

5 products

Stencils

Paint over or trace to create everything from custom messages to drafting designs

4 products

Electrical Power, Networking, and Controlling

Conduit and Fittings

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

91 products