Metric Holders | McMaster-Carr

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Performance

T-Slotted Framing Rail Profile

10,196 Products

Most Likely Products

Retention Knobs

Attach tool holders such as collet chucks and end mill holders to your CNC machine’s spindle

10 products

T-Slotted Framing and Fittings

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

677 products

Routing Clamps

Secure routed lines of pipe, tubing, and conduit

663 products

Loop Clamps

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

478 products

Strut Channel Framing and Fittings

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

511 products

All Results

Fabricating and Machining

Retention Knobs

Attach tool holders such as collet chucks and end mill holders to your CNC machine’s spindle

10 products

Milling Machine Collets

Install in a milling machine collet chuck or holder to tightly grip tool bits

52 products

Lathe Collets

Insert into a lathe collet chuck or holder to tightly grip workpieces

24 products

Die Grinder Collets

Attach to die grinders to hold grinding bits and burs

1 product

Deburring Tool Holders

Deburr using your CNC machine without complex programming

4 products

T-Slot Nuts

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

120 products

T-Slot Cleaners

Scrape debris out of machine table T-slots

2 products

T-Slot Covers

Snap into T-slots to block chips, debris, and small parts from falling in

6 products

T-Slot Fixture Plates

Position workpieces with T-slot nuts, bolts, and setup studs for precise machining

3 products

T-Slot Bolts

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

96 products

Fixture Clamps

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

76 products

Setup Studs

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

307 products

Fixture Kits

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

16 products

Spring Locating Pins

Apply side force to workpieces to clamp them in place

37 products

Locating and Support Buttons

Secure and position workpieces and fixtures from the bottom or side

29 products

Slotted Bushings

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

7 products

Support Blocks

Support setup clamps for quick height adjustments

3 products

Fixture Keys

Locate fixtures and vises on your machine table

16 products

Grippers

Clamp against uneven or irregularly shaped parts such as castings for a secure hold

6 products

Angle Plates

Ensure accurate right angles and hold workpieces and fixtures perpendicular to your machine table

3 products

Locating Pins

Install in fixturing plates or tables to position and secure workpieces

34 products

Fixture Tables

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

15 products

Jaw Fixtures

Mount to a milling machine, drill press, or other flat surface to grip workpieces

8 products

Lathe Chuck Jaw Nuts

Secure jaws to a CNC lathe chuck

9 products

Lathe Tools

Shape workpieces as they rotate on a lathe

3 products

Lathe Tool Insert Holders

Secure inserts within lathes to add cuts and grooves to workpieces

10 products

C-Clamps

Temporarily secure workpieces together or to a work surface

17 products

Bar Clamps

Secure large materials with adjustable arms for even pressure distribution

2 products

Swivel Pads

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

7 products

Drill Bit Guides

Drill precise holes without building a fixture

2 products

Material Handling

Routing Clamps

Secure routed lines of pipe, tubing, and conduit

663 products

Loop Clamps

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

478 products

Pipe Supports

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

74 products

Pipe Hangers

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

522 products

U-Bolts

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

866 products

Beam Clamps

Secure lines of pipe and duct, overhead equipment, and lighting fixtures to beam flanges

29 products

Pipe Cradles

Add support to prevent insulation from tearing when routing insulated pipe through loop hangers

20 products

Riser Clamps

Wide flanges support vertical pipe passing through floors

38 products

Conveyor Guide Mounting Rods

Secure guides and other attachments to conveyors

57 products

Conveyor Guide Clamps

Connect conveyor guides to each other and secure them in place

1 product

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

42 products

Cable Holders

Mount to a surface to secure and route cable

6 products

Robot Tool Mounts

Attach tools or extensions to robot arms

27 products

Vacuum Lifters

Grip and move objects with air- or electric-powered suction

45 products

Building and Machinery Hardware

T-Slotted Framing and Fittings

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

677 products

Strut Channel Framing and Fittings

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

511 products

Clamp-On Framing and Fittings

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

8 products

Brackets

Connect surfaces in an assembly

112 products

Cam Handles

For fast clamping, push down on the handle to draw two parts together

47 products

Door Tracks

Hang panels to slide over openings when there’s not space for a swinging door

1 product

Measuring and Inspecting

Coordinate Measuring Machine Plates and Fixtures

Raise workpieces and position them on a fixture plate

52 products

Variance Indicators

Identify small dimensional differences when checking part quality and alignment

12 products

Variance Indicator Clamps

Secure and position indicators, arms, and other components on holders

7 products

Alignment Pins

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

15 products

Power Transmission

Linear Shaft Supports

Support linear shafts to prevent bending and rolling under loads

72 products

Gas Spring Mounts

Attach gas springs to panels, lids, and doors using a bracket or stud

121 products

Positioning Slides

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

78 products

Connecting Rods

Use with rod ends and swivel joints to link components in push/pull assemblies

263 products

Turntable Bearings

Support machinery that slowly turns or oscillates, such as a rotating hoist

32 products

Containers, Storage, and Furniture

Wrench Organizers

Keep wrenches in order at your workstation or when carrying them around your facility

4 products

Socket Organizers

Arrange sockets at your workstation or carry them neatly around your facility

8 products

Cabinets

Store objects on enclosed shelves

1 product

Pallets

Stack items to move them with a forklift and keep them orderly and raised off the ground in storage

1 product

Fastening and Joining

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

1,150 products

Studs

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

209 products

Retaining Rings

Hold components on a shaft

961 products

Anchors

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

4 products

Weld Nuts

Weld to metal surfaces to add permanent threads

3 products

Taper Pins

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

232 products

Spring Pins

Squeeze and insert into tight holes to hold parts in place with tension

541 products

Standoffs

Separate, position, or connect components in assemblies

245 products

Clevis Pins

Secure parts in place and lock with a cotter pin or retaining ring

137 products

Cotter Pins

Secure the ends of clevis pins and shafts to keep components in place

192 products

Single-End Studs

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

47 products

Screwdrivers

Tighten and loosen screws

10 products

Threaded Stud and Rod Drivers

Hold and tighten threaded studs and rods

4 products

T-Handle Keys

To turn fasteners in hard-to-reach spots, there's a long shaft and a grip for your whole hand

6 products

L-Keys

Turn fasteners from either end and reach into tight spots

11 products

Socket Inserts

Slip into sockets to keep fasteners from falling out

2 products

Sockets

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

51 products

Electrical

DIN Rail Mounting Adapters

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

10 products

Switch Mounts

Mount sensor switches to panel cutouts, tank walls, or conveyors

2 products

Cable and Hose Carriers

Route, protect, and guide moving cable

33 products

Terminal Blocks

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

281 products

Fluid Handling

Hose and Hose Fittings

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

7 products