Blocks | McMaster-Carr

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33,869 Products

Raw Materials

Aluminum

Lightweight, easy to machine, and corrosion resistant in wet environments

Plastic

A lightweight alternative to metal and glass

Steel

Strong, machinable, and weldable but lacks corrosion resistance

Stainless Steel

Stainless Steel

Resists corrosion and chemicals in most environments

Foam

Pockets of air make it lighter in weight than rubber; good for packing, insulating, and sealing

Rubber

Compresses and bounces back to shape; often used for sealing, cushioning, and shock absorbing

Copper

The most conductive of our metals, it excels in all types of electrical applications

Wood

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

Ceramic

Hard and wear resistant, it also withstands corrosion and high temperatures

Graphite

Compressible or conductive for making high-temperature seals, furnace parts, and crucibles

Brass

More machinable than copper and bronze for making nuts, hinges, and locks

Garolite

A strong, machinable alternative to metal and plastic widely used in circuit boards and gears

Tungsten

Our densest metal resists wear and heat to make end mills, heat shields, electrodes, and more

Carbon Fiber

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

Lead

A dense insulator often used to shield against radiation and absorb sound and vibration

Wax

Create seals and prototypes, lubricate tools, and polish equipment

Glass

Clear and highly heat and chemical resistant; often used in sights, lighting, and lab equipment

Bronze

With better wear resistance than copper and brass, it’s used for bearings, gears, and pump parts

Carbon

An electrical conductor that’s often used in electronics and sensors

Fiberglass

A lightweight alternative to metal and wood widely used in electrical and structural applications

Felt

Thicker and more absorbent than fabric for insulating, polishing, cushioning, and gasketing

Nickel

An upgrade from stainless steel that withstands harsh chemicals and acids at high temperatures

Niobium

Conductive, corrosion resistant, and strong, even at extremely high and low temperatures

Tin

Soft and malleable for forming gaskets and filters; also mixes with other metals to make solder

Fabricating and Machining

Setup Blocks

Use as mounting bases and supports to ensure accurate angles and spacing

V-Blocks

Hold round workpieces

Fixture Keys

Locate fixtures and vises on your machine table

Angle Plates

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

Pin Removal Blocks

Pin Removal Blocks

Remove a range of pin sizes from workpieces by tapping them into holes with a punch and hammer

Step Blocks

Support setup clamps for quick height adjustments

Milling Machine Collet Blocks

Milling Machine Collet Blocks

Hold workpieces to machine parallel or square edges and drill crossholes

Alignment Locks

Alignment Locks

Precisely align your mold halves

Magnetic Workholding Plates

Magnetic Workholding Plates

Keep metal workpieces firmly in place for grinding, drilling, and electrical discharge machining

Forming Blocks

Place on the back side of workpieces for support as you hammer them; also known as dolly blocks

Fluid Handling

Manifolds

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

Junction Blocks

Junction Blocks

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

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

Valve Mounts

Match standard NFPA mounting patterns to connect valves with multiple ports

Electrical

Terminal Blocks

Terminal Blocks

Mate with terminals to complete circuits in control panels, motors, and small machines

Distribution Blocks

Distribution Blocks

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

Distribution Bars

Distribution Bars

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

DIN Rail Spacers

DIN Rail Spacers

Slide along rails to separate and organize terminal blocks, relays, and other components

DIN Rail Stops

Keep components such as terminal locks and relays from shifting on rails

Grounding Bars

Create a convenient central grounding point by connecting multiple ground wires

Grounding Blocks

Grounding Blocks

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

Fuse Blocks

Send power to one or more circuits and house a fuse for each of them

Thermal Interface Material

Thermal Interface Material

Dissipate heat away from electronic components

Material Handling

Pulleys

Mount or suspend to guide wire rope for lifting and pulling loads

Hoists

Lift and position heavy loads using manual, electric, or air power

Pipe Hangers

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

Routing Clamps

Secure routed lines of pipe, tubing, and conduit

Routing Clamp Rails

Routing Clamp Rails

Use with rail-mount routing clamps to route pressurized lines in hydraulic systems

Wheel Chocks

Secure wheels in place while loading, unloading, and servicing vehicles

Conveyor Guide Cross Blocks

Conveyor Guide Cross Blocks

Join conveyor guide mounting rods at different angles

Magnetic Conveyor Belt Plates

Magnetic Conveyor Belt Plates

Keep ferrous objects in place as they move along your conveyor belt

Power Transmission

Ball Bearings

Create less friction than other bearings for use at high speeds

Bearing Housings

Bearing Housings

Mount your own bearings in place

Linear Bearings

Linear Bearings

Minimize friction as parts move along a shaft

Plain Bearings

With no moving parts, the simplest type of bearing

Bearing Adapter Sleeves

Bearing Adapter Sleeves

Close gaps between your bearing and shaft for a tight fit

Roller Bearings

Roller Bearings

Support higher loads than ball bearings, but run at lower speeds

Linear Bearing Brakes

Linear Bearing Brakes

Lock bearings in place on a shaft for precise positioning

Shaft Supports

Support linear motion shafts to prevent bending and rolling under loads

Guide Rail Carriages

Guide Rail Carriages

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

Measuring and Inspecting

Gauge Blocks

Confirm dies, fixtures, and other workpieces meet precise tolerances and calibrate measuring tools

Calibration Squares

Calibration Squares

Lay horizontally or vertically on CNC machines to check the position of tools with high precision

Bore Gauge Calibrators

Bore Gauge Calibrators

Set and check the accuracy of two-point bore gauges

Hardness Calibration Test Blocks

Hardness Calibration Test Blocks

Confirm testers are accurate for a specific Rockwell or Brinell hardness

Hardness Testers

Hardness Testers

Determine the Rockwell, Brinell, or Durometer hardness of any material

Load Cell Junction Boxes

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

Color Calibrators

Color Calibrators

Calibrate your color meter to identify colors with precision

Facility and Grounds Maintenance

Deodorizers

Eliminate odors in everything from trash cans and bathrooms to machine coolant and wastewater

Knife Blocks

Store up to five knives and one sharpening steel

Fastening and Joining

Magnets

Attract or repel metal objects to hang, secure, or position them

Building and Machinery Hardware

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

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

Lubricating

Grease Fitting Manifolds

Grease Fitting Manifolds

Lubricate multiple points with the same amount and type of grease using one grease fitting

Grease Fitting Junction Blocks

Grease Fitting Junction Blocks

Send different types and amounts of grease from multiple grease fittings to lubricate several points

Safety Equipment

Parking Gate Arms

Parking Gate Arms

Replace arms on motor-powered gates

Containers, Storage, and Furniture

Wheel Chock Holders

Wheel Chock Holders

Store wheel chocks near docks and loading zones so they’re always on hand

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