Round Bars | McMaster-Carr

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System of Measurement

Diameter

Shape

Length

Material

Tolerance Rating

Heat Treatment

Performance

Specifications Met

NACE MR0175/ISO 15156

OSHA Standard

SAE Standard

U.S. Congressional Act

Mechanical Finish

Hardness Rating

Hardness

Certificate Type

Material Certificate with Traceable Lot Number

Material Certificate with Traceable Lot Number and Test Report

Yield Strength

Less than 10,000 psi

10,000 psi to 19,999 psi

20,000 psi to 99,999 psi

100,000 psi to 199,999 psi

200,000 psi or greater

Fabrication

Thickness

DFARS Specialty Metals

Width

Appearance

End Type

One Open and One Closed

Plain

Retaining Ring Groove

REACH

RoHS

Compliant with Exemptions

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

23,832 Products

Raw Materials

Stainless Steel

Resists corrosion and chemicals in most environments—all with material certificates for traceability

1,891 products

Steel

Strong, machinable, and weldable—all with material certificates for traceability

3,466 products

Aluminum

Lightweight, easy to machine, and corrosion resistant—all with material certificates for traceability

862 products

Plastic

A lightweight alternative to metal and glass

2,061 products

Brass

More machinable than copper and bronze—all with material certificates for traceability

298 products

Copper

Our most conductive metal for electrical applications—all with material certificates for traceability

266 products

Bronze

Better wear resistance than copper and brass—all with material certificates for traceability

466 products

Rubber

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

594 products

Titanium

The most corrosion-resistant metal we offer—all with material certificates for traceability

81 products

Tungsten

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

214 products

Nickel

An upgrade from stainless steel to withstand harsh chemicals and acids—all with material certificates for traceability

235 products

Garolite

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

601 products

Glass

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

200 products

Ceramic

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

350 products

Fiberglass

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

76 products

Carbon Fiber

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

134 products

Foam

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

132 products

Wax

Create seals and prototypes, lubricate tools, and polish equipment

23 products

Lead

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

28 products

Graphite

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

34 products

Wood

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

80 products

Molybdenum

Retains its shape and strength in extreme temperatures—all with material certificates for traceability

41 products

Cobalt

Resists impact and rapid temperature changes—all with material certificates for traceability

3 products

Hard Fiber

Chemically treated to be hard and dense, this is the easiest composite to machine in our offering

17 products

Gold

Form into electronic components that won't corrode—all with material certificates for traceability

4 products

Kevlar

Super tough for protection against prolonged wear and abrasion

5 products

Platinum

Formable and conductive while resisting extreme heat—all with material certificates for traceability

22 products

Felt

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

33 products

Mica

An electrical insulator that resists high temperatures; use in circuit breakers and heating elements

54 products

Tantalum

Conductive with a higher melting point than most metals—all with material certificates for traceability

17 products

Niobium

Conductive and corrosion resistant even at extreme temperatures—all with material certificates for traceability

8 products

Power Transmission

Rotary Shafts

Pair with gears, sprockets, and bearings to transmit rotary motion

1,762 products

Linear Shafts

Pair with linear bearings and shaft supports to create smooth, precise motion

1,318 products

Idler Shafts

Support idler sprockets and pulleys in tensioning applications

28 products

Linear Shaft Supports

Support linear shafts to prevent bending and rolling under loads

24 products

Gear Box Shafts

Convert output drives from female to male

10 products

Sealing

Backer Rods

Insert into gaps before caulking to reduce how much sealant you need and improve adhesion

35 products

Fluid Handling

Pipe

Join with fittings and additional lengths of pipe

7,430 products

Tubing

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

133 products

Mixer Shafts

Replace the shaft on mixers

44 products

Safety Equipment

Handrails

Grab while using stairs to reduce risk of falls

13 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

Grab Bars

Steady and support people with limited mobility in bathrooms

36 products

Building and Machinery Hardware

Clamp-On Framing and Fittings

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

247 products

Slip-On Framing and Fittings

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

434 products

Lighting

Light Pipes

Concentrate and direct light from the bulb on a circuit board to a display

16 products

Fastening and Joining

Connectors for Telescoping Tubes

Lock tubes in place to create adjustable structures, such as folding stands and extension poles

15 products

Material Handling

Scaffold Clamps

Construct scaffolding and secure supports, such as railings

2 products