Round Stock | McMaster-Carr

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System of Measurement

Diameter

Shape

Length

Material

Tolerance Rating

Hardness Rating

Performance

Color

Hardness

Specifications Met

Federal Specification

FMVSS No. 106

ISO Standard

NACE MR0175/ISO 15156

NASM3036

OSHA Compliant 29 CFR 1926.701

SAE Standard

U.S. Congressional Act

Fabrication

Wall Thickness

Heat Treatment

Mechanical Finish

Thickness

Flexibility

REACH

RoHS

Compliant with Exemptions

Not Compliant

DFARS Specialty Metals

Maximum Temperature

Yield Strength

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

Not Rated

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

Yes

Export Control Classification Number (ECCN)

25,791 Products

Raw Materials

Steel

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

3,728 products

Plastic

A lightweight alternative to metal and glass

2,193 products

Stainless Steel

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

1,687 products

Aluminum

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

840 products

Brass

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

313 products

Rubber

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

695 products

Bronze

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

466 products

Copper

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

269 products

Tungsten

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

256 products

Garolite

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

601 products

Titanium

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

93 products

Foam

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

153 products

Glass

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

205 products

Nickel

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

245 products

Carbon Fiber

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

134 products

Ceramic

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

399 products

Fiberglass

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

76 products

Lead

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

40 products

Graphite

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

34 products

Hard Fiber

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

17 products

Wood

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

92 products

Molybdenum

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

41 products

Niobium

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

8 products

Kevlar

Super tough for protection against prolonged wear and abrasion

5 products

Cobalt

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

3 products

Wax

Create seals and prototypes, lubricate tools, and polish equipment

11 products

Mica

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

6 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

Gear Box Shafts

Convert output drives from female to male

10 products

Fluid Handling

Tube and Tube Fittings

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

5,077 products

Building and Machinery Hardware

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

1,562 products

Slip-On Framing and Fittings

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

26 products

Sealing

Backer Rods

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

35 products

Fastening and Joining

Shims

Align and space components on shafts, or level machinery, cabinets, and doors

3,270 products

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

66 products

Measuring and Inspecting

Metal Detector Calibration Kits

Test the sensitivity of food-processing metal detectors

1 product

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

Fabricating and Machining

Lathe Tool Blanks

Machine custom lathe tool bits

2 products