McMaster-Carr logo
    Filter by
    System of Measurement
    Diameter
    Attribute Image
    End Type
    Shape
    Edge Type
    Tolerance Rating
    Keyway Width
    Attribute Image
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Industrial Info Compare
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    46 Products

    Rotary Shafts

    Image of Product. Front orientation. Rotary Shafts.
    Pair with gears, sprockets, and bearings to transmit rotary motion. Turned, ground, and polished to tight tolerances, these shafts reduce vibration, evenly distribute loads, and improve accuracy.
    Carbon Steel—Strong and easy to machine. These shafts work best in dry environments since moisture will cause steel to rust.
    Material
    Lg.,
    mm
    Straightness
    Tolerance
    Diameter
    Tolerance
    Hardness
    Hardness
    Rating
    Each
    Carbon Steel
     
    40 mm Diameter
    2000.3 mm/300 mm-0.051 mm to 0 mmBrinell 197Medium4138N89000000
    4000.3 mm/300 mm-0.051 mm to 0 mmBrinell 197Medium4138N9100000
    5000.3 mm/300 mm-0.051 mm to 0 mmBrinell 197Medium4138N9200000
    1,0000.3 mm/300 mm-0.051 mm to 0 mmBrinell 197Medium4138N93000000
    1,2000.3 mm/300 mm-0.051 mm to 0 mmBrinell 197Medium4138N94000000
    1,5000.3 mm/300 mm-0.051 mm to 0 mmBrinell 197Medium4138N95000000
    2,0000.3 mm/300 mm-0.051 mm to 0 mmBrinell 197Medium4138N96000000
     

    Linear Shafts

    Image of Product. Front orientation. Linear Shafts.
    Pair with linear bearings and shaft supports to create smooth, precise motion. These linear shafts are turned, ground, and polished to tight tolerances and hardened to resist wear.
    Steel—Stronger than aluminum and stainless steel. These shafts are best for dry environments since moisture will cause them to rust.
    Highly Wear-Resistant 420 Stainless Steel—Balancing strength, wear resistance, and corrosion resistance, these shafts can handle moisture and mild cleaning solutions.
    Surface Smoothness—The lower the microinch value, the smoother the finish and the less friction it will cause on the bearing.
    Lg.,
    mm
    Dia. Tolerance,
    mm
    Hardness
    Hardness
    Rating
    Surface Smoothness,
    μin
    Each
    Steel
     
    40 mm Diameter
    200-0.016 to 0Rockwell C59Extra Hard126112K118000000
    500-0.016 to 0Rockwell C59Extra Hard126112K8300000
    750-0.01 to 0Rockwell C60Extra Hard86767N144000000
    1,000-0.016 to 0Rockwell C59Extra Hard126112K84000000
    1,200-0.016 to 0Rockwell C59Extra Hard126112K85000000
    1,500-0.016 to 0Rockwell C59Extra Hard126112K86000000
    2,000-0.016 to 0Rockwell C59Extra Hard126112K25000000
    2,500-0.016 to 0Rockwell C59Extra Hard126112K36000000
     
    Highly Wear-Resistant 420 Stainless Steel
     
    40 mm Diameter
    500-0.016 to 0Rockwell C52Extra Hard126459K92000000
    600-0.016 to 0Rockwell C52Extra Hard126459K93000000
    800-0.016 to 0Rockwell C52Extra Hard126459K94000000
    1,000-0.016 to 0Rockwell C52Extra Hard126459K95000000
    1,200-0.016 to 0Rockwell C52Extra Hard126459K96000000
    1,500-0.016 to 0Rockwell C52Extra Hard126459K97000000
     

    Keyed Rotary Shafts

    Match with a machine key to prevent slipping while transmitting torque to gears and other components. Turned, ground, and polished to tight tolerances, these shafts reduce vibration, evenly distribute loads, and improve accuracy.
    Fully Keyed
    Image of Product. Front orientation. Rotary Shafts. Keyed Rotary Shafts, Fully Keyed.
    Image of Attribute. Front orientation. Contains Annotated. Rotary Shafts. Keyed Rotary Shafts, Fully Keyed.
    Mount components anywhere along the length of these shafts. For secure torque transmission, slide a component from either end and lock it into place with an ANSI machine key (sold separately).
    Carbon Steel—Strong and easy to machine. These shafts work best in dry environments since moisture will cause steel to rust.
    Keyway
    Material
    Lg.,
    mm
    Lg.
    Wd.
    Dp.
    ANSI Keys
    Included
    Straightness
    Tolerance
    Dia. Tolerance,
    mm
    Hardness
    Hardness
    Rating
    Each
    Carbon Steel
     
    40 mm Diameter
    300300 mm12 mm5 mmNo0.33 mm/300 mm-0.076 to 0Rockwell B95Medium1439K9110000000
    500500 mm12 mm5 mmNo0.33 mm/300 mm-0.076 to 0Rockwell B95Medium1439K921000000
    1,0001,000 mm12 mm5 mmNo0.33 mm/300 mm-0.076 to 0Rockwell B95Medium1439K931000000
    1,2001,200 mm12 mm5 mmNo0.33 mm/300 mm-0.076 to 0Rockwell B95Medium1439K941000000
    1,5001,500 mm12 mm5 mmNo0.33 mm/300 mm-0.076 to 0Rockwell B95Medium1439K951000000
    1,8001,800 mm12 mm5 mmNo0.33 mm/300 mm-0.076 to 0Rockwell B95Medium1439K18000000
     

    Multipurpose Low-Carbon Steel Rods

    Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into low-strength fasteners, pins, and axles. You can surface harden this material for added wear resistance.
    If you don't see the size you're looking for, check out our Made-to-Order Low-Carbon Steel Rods.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Long Rods
    Image of Product. Front orientation. Steel. Multipurpose Low-Carbon Steel Rods.
    Cold Worked—Cold-worked products have a finished look and quality. The cold-working process gives the steel consistent strength, hardness, and dimensions throughout.
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Fabrication
    Yield Strength,
    psi
    Mechanical Finish
    Hardness
    Max. Hardness After
    Heat Treatment
    Specs.
    Met
    1/2 ft.
    Long
    1 ft.
    Long
    2 ft.
    Long
    3 ft.
    Long
    4 ft.
    Long
    6 ft.
    Long
    8 ft.
    Long
    40-0.07 to 0Cold Worked54,000—Rockwell B70 (Medium)Not RatedASTM A1088920K4600000000000000000000000000000000000000000000000
    40-0.02 to 0Cold Worked50,000Ground, Polished, TurnedRockwell B70 (Medium)Not RatedASTM A1088920K504—00000—000000—000000—

    Tight-Tolerance Extreme-Strength 17-4 PH Stainless Steel Rods

    Image of Product. Front orientation. Stainless Steel. Tight-Tolerance Extreme-Strength 17-4 PH Stainless Steel Rods.
    Machine high-strength parts that require pinpoint precision. Ready to turn in your lathe, these rods come precision ground to tight diameter tolerances.
    17-4 PH stainless steel combines the strength of 400 series stainless steel with the corrosion resistance of 300 series. This makes it fit for the most demanding applications—even storing and protecting nuclear waste. You can be confident it will stay corrosion resistant in temperatures as hot as 1100° F. Also known as 630 stainless steel.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Max. Temp.,
    ° F
    Fabrication
    Hardness
    Max. Hardness After
    Heat Treatment
    Heat
    Treatment
    Specs.
    Met
    1/2 ft.
    Long
    1 ft.
    Long
    2 ft.
    Long
    3 ft.
    Long
    6 ft.
    Long
    40-0.013 to 01,100Cold WorkedRockwell C28 (Hard)Rockwell C47AnnealedASTM A5643180T2600000000000000000000000000000000000
     

    Corrosion-Resistant 4140 Alloy Steel Rods

    Image of Product. Front orientation. Steel. Corrosion-Resistant 4140 Alloy Steel Rods.
    A chrome plating on these rods increases their corrosion resistance. They're also hardened, which makes them more resistant to impacts and abrasion. Also known as chrome-moly steel, this versatile alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress.
    Note: Rods may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Fabrication
    Heat
    Treatment
    Yield Strength,
    psi
    Hardness
    1/2 ft.
    Long
    1 ft.
    Long
    2 ft.
    Long
    3 ft.
    Long
    6 ft.
    Long
    40-0.038 to 0Hot RolledHardened100,000Rockwell C30 (Hard)6689T380000000000000000000000000000000000

    Multipurpose 304 Stainless Steel Rods

    Made from the most common stainless steel, these 304 stainless steel rods are used to create corrosion-resistant parts for a wide range of applications. Machine them into anything from shafts on chemical mixers to flanges on beverage lines. They maintain their corrosion resistance in temperatures up to 1500° F.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Long Rods
    Image of Product. Front orientation. Stainless Steel. Multipurpose 304 Stainless Steel Rods.
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Material
    Fabrication
    Hardness
    1 ft.
    Long
    1 1/2 ft.
    Long
    3 ft.
    Long
    40-0.1 to 0304 Stainless Steel
    		Cold WorkedRockwell B80 (Medium)1272T62000000000000000000000
     

    Hollow Linear Shafts

    Image of Product. Front orientation. ZoomedIn view. Linear Shafts. Hollow Linear Shafts.
    Substantially lighter in weight than standard shafts, these are best for light loads. You can also run wiring, pneumatic tubing, coolants, and lubricants through the shaft's hollow center. Pair with linear bearings and shaft supports to create smooth, precise motion. These linear shafts are turned, ground, and polished to tight tolerances and hardened to resist wear.
    Steel—Stronger than aluminum and stainless steel. These shafts are best for dry environments since moisture will cause them to rust.
    Surface Smoothness—The lower the microinch value, the smoother the finish and the less friction it will cause on the bearing.
    Lg.,
    mm
    Dia. Tolerance,
    mm
    ID,
    mm
    Hardness
    Hardness
    Rating
    Surface Smoothness,
    μin
    Each
    Steel
     
    40 mm Diameter
    500-0.025 to 026Rockwell C59Extra Hard125964K440000000
    1,000-0.025 to 026Rockwell C59Extra Hard125964K54000000
    1,500-0.025 to 026Rockwell C59Extra Hard125964K74000000
     

    Tight-Tolerance Multipurpose 4140 Alloy Steel Rods

    Image of Product. Front orientation. Steel. Tight-Tolerance Multipurpose 4140 Alloy Steel Rods.
    Ready for turning in your lathe, these rods are precision ground and held to a strict straightness tolerance. Also known as chrome-moly steel, this versatile alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress. For added wear resistance, you can surface harden these rods with heat treating.
    Note: Rods may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Fabrication
    Heat
    Treatment
    Yield Strength,
    psi
    Mechanical
    Finish
    Hardness
    Max. Hardness After
    Heat Treatment
    Specs.
    Met
    1/2 ft.
    Long
    1 ft.
    Long
    2 ft.
    Long
    3 ft.
    Long
    6 ft.
    Long
    40-0.013 to 0Cold DrawnAnnealed60,000Precision GroundRockwell B90 (Medium)Rockwell C60ASTM A1085836T450000000000000000000000000000000000

    Tight-Tolerance Multipurpose Low-Carbon Steel Rods

    Image of Product. Front orientation. Steel. Tight-Tolerance Multipurpose Low-Carbon Steel Rods.
    These rods are precision ground and held to a strict straightness tolerance, so they're ready for turning in a lathe. Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into low-strength fasteners, pins, and axles. For added wear resistance, this material can be surface hardened with heat treating.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Fabrication
    Yield
    Strength
    Hardness
    Mechanical
    Finish
    Specs.
    Met
    1 ft.
    Long
    3 ft.
    Long
    6 ft.
    Long
    40-0.013 to 0Cold DrawnNot RatedNot RatedPrecision GroundASTM A1086103N3500000000000000000000

    Highly Machinable 4140 Alloy Steel Rods

    Image of Product. Front orientation. Steel. Highly Machinable 4140 Alloy Steel Rods.
    Often called ETD-150, this modified alloy steel is drawn at high temperatures for excellent strength and machinability. Also known as chrome-moly steel, 4140 alloy steel resists fracturing from repeated stress. It is used for a wide range of parts, such as gears, axles, and shafts. These rods have been hardened for added resistance to abrasion and impact.
    Note: Rods may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Fabrication
    Heat
    Treatment
    Yield Strength,
    psi
    Hardness
    Specs.
    Met
    1 ft.
    Long
    2 ft.
    Long
    3 ft.
    Long
    6 ft.
    Long
    40-0.025 to 0Cold WorkedHardened130,000Rockwell C32 (Hard)ASTM A1086818T510000000000000000000000000000

    Tight-Tolerance Ultra-Machinable 12L14 Carbon Steel Rods

    Image of Product. Front orientation. Steel. Tight-Tolerance Ultra-Machinable 12L14 Carbon Steel Rods.
    Ready for turning in a lathe, these rods are precision ground and held to a strict straightness tolerance. The lead additive acts as a lubricant, which allows 12L14 carbon steel to withstand very fast machining. It's used to fabricate a wide variety of machine parts, such as shaft couplings, studs, and pins. For added wear resistance, they can be surface hardened with heat treating.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Fabrication
    Yield Strength,
    psi
    Mechanical
    Finish
    Hardness
    Max. Hardness After
    Heat Treatment
    Specs.
    Met
    1/2 ft.
    Long
    1 ft.
    Long
    2 ft.
    Long
    3 ft.
    Long
    6 ft.
    Long
    40-0.012 to 0Cold Worked65,000Precision GroundRockwell B80 (Medium)Rockwell C65ASTM A1085544T392000000000000000000000000000000000

    Ball Screws and Nuts

    Image of ProductInUse. Front orientation. Contains Inset. Ball Screws and Nuts. Ball Screws and Nuts .
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Ball Nuts, Flange Nut, Style C.

    Ball Nuts

    Flange Nut

    Style C

    Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start ball screws and nuts, they have a single thread that runs the length of the screw. They operate with more torque than fast-travel ball screws and nuts. To ensure compatibility, select components that have the same thread direction and size. Ball nuts are furnished with a tube to keep ball bearings in place. Do not remove the tube until you are ready to install the nuts onto the screws.
    Flange Ball Nuts—Right-Hand Threaded
    Image of Product. Front orientation. Contains Annotated. Ball Screws and Nuts. Ball Screws and Nuts , Ball Nuts, Flange Nut, Style C.

    Style C

    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
    Flange,
    mm
    Style
    Thread
    Size
    Lg.,
    mm
    Dia.,
    mm
    Wd.
    Ht.
    Thk.
    No. of Thread
    Starts
    Travel Distance
    per Turn, mm
    Hardness
    Dynamic Thrust
    Load Cap., lb.
    Max. Backlash,
    mm
    Temp. Range,
    ° F
    Each
    Alloy Steel
    CM20
    		404060461015Rockwell C581,3000.15 to 1756624K430000000
     

    Multipurpose 6061 Aluminum Rods

    The most widely used aluminum, 6061 is made into everything from pipe fittings to containers to airplane parts. It balances strength and corrosion resistance, plus it's easy to machine and weld.
    Don't see the size you need? Check out our Made-to-Order 6061 Aluminum Rods.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Long Rods
    Image of Product. Front orientation. Aluminum. Multipurpose 6061 Aluminum Rods.
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Fabrication
    Temper
    Designation
    Specs.
    Met
    1 ft.
    Long
    3 ft.
    Long
    6 ft.
    Long
    40-0.310 to 0.310ExtrudedT6
    		ASTM B2214634T450000000000000000000
     

    Mounted Linear Bearings for Ball Splines

    Image of ProductInUse. Front orientation. Contains Annotated. Ball Splines and Bearings. Mounted Linear Bearings for Ball Splines.
    A flange with mounting holes makes it easy to attach a load to these bearings. Create a compact linear and rotary motion system for robots and other applications requiring complex, fast movements, by combining them with ball splines. These bearings move smoothly and precisely even at high speeds along ball splines while grooves on the ball spline transmit rotary power. Clip a retaining ring (not included) into the groove on these bearings to position them in your system.
    52100 Alloy Steel Splines
    Image of ProductInUse. Front orientation. Contains Annotated. Ball Splines and Bearings. Mounted Linear Bearings for Ball Splines, Splines.
    Image of Product. Front orientation. ZoomedIn view. Contains MultipleImages. Ball Splines and Bearings. Mounted Linear Bearings for Ball Splines, Splines, Splined on Both Ends.

    Splined on Both

    Ends

    Image of Attribute. 4 Splines. Front orientation. Contains Annotated. Mounted Linear Bearings for Ball Splines.

    4 Splines

    Image of Attribute. Front orientation. ZoomedIn view. Contains Annotated. Mounted Linear Bearings for Ball Splines.
    Splines are alloy steel for high strength and wear resistance. They're hardened only on the outside, so they stand up to repeated motion while keeping their center soft enough to absorb stress from shifting loads.
    Spline
    Dia.,
    mm
    Lg.,
    mm
    No.
    of
    Lg.,
    mm
    Root Dia.,
    mm
    Each
    Splined on Both Ends
    40400440035.561145K1770000000
    40700470035.561145K178000000
     

    Tight-Tolerance Extra-High-Strength 7075 Aluminum Rods

    Image of Product. Front orientation. Aluminum. Tight-Tolerance Extra-High-Strength 7075 Aluminum Rods.
    When precision and yield strength are nonnegotiable, choose these 7075 aluminum rods. They’re ground to paper-thin tolerances for parts that require pinpoint precision. Held to a strict straightness tolerance, they’re all set to turn in your lathe.
    7075 is one the strongest aluminum alloys, boasting a yield strength that rivals carbon steel rebar. Originally made for aircraft frames, it’s now turned into gears, machine keys, and other high-stress parts. It’s a good substitute for 2024 aluminum when forming and welding aren’t top concerns.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Fabrication
    Temper
    Designation
    Specs.
    Met
    Straightness
    Tolerance
    1 ft.
    Long
    3 ft.
    Long
    6 ft.
    Long
    40-0.0127 to 0Cold WorkedT6
    		ASTM B2110.005"/1 ft.9403T62000000000000000000000

    Multipurpose Flame-Retardant Garolite G-10/FR4 Rods

    Made of a flame-retardant epoxy resin with fiberglass fabric reinforcement, these G-10/FR4 rods are a good all-around choice. They are strong, machinable, and electrically insulating. Garolite G-10/FR4 is also called epoxy-grade industrial laminate and phenolic.
    If you don’t see the size you’re looking for, please specify a length under additional rod lengths.
    Rod
    Image of Product. Front orientation. Garolite. Multipurpose Flame-Retardant Garolite G-10/FR4 Rods.
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Temp. Range,
    ° F
    Tensile Strength,
    psi
    Impact Strength,
    ft·lbf/in
    Hardness
    For Use
    Outdoors
    Mil. Spec.
    Flammability
    Rating
    1 ft.
    Long
    4 ft.
    Long
    Green
    40-0.076 to 0.076-100 to 24535,000 to 50,0005.5 to 12Rockwell M115
    (Extra Hard)    		YesMIL-I-24768/27UL 94 V-0
    		8669K6450000000000000
     

    Tight-Tolerance Multipurpose 6061 Aluminum Rods

    Ground to paper-thin tolerances, these 6061 aluminum rods are best for precision parts.
    6061 is the most widely used aluminum, made into everything from pipe fittings to containers to airplane parts. It balances strength and corrosion resistance, plus it’s easy to machine and weld.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Long Rods
    Image of Product. Front orientation. Aluminum. Tight-Tolerance Multipurpose 6061 Aluminum Rods.
    Held to a strict straightness tolerance, these rods are all set for turning in your lathe.
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Fabrication
    Temper
    Designation
    Specs.
    Met
    Straightness
    Tolerance
    1 ft.
    Long
    3 ft.
    Long
    6 ft.
    Long
    40-0.013 to 0.013ExtrudedT6511
    		ASTM B2210.021"/1 ft.6940T2500000000000000000000
    back to top