McMaster-Carr logo
    Filter by
    Magnetic Properties
    System of Measurement
    Shape
    Tolerance Rating
    Hardness Rating
    Appearance
    Heat Treatment
    Construction
    Mechanical Finish
    Specifications Met
    Yield Strength
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Elongation
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Industrial Info Compare
    Mount Type
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    88 Products
    About Stainless Steel
    industrial info icon

    Compare over 25 types of stainless steel to find the right material for you—all with material certificates for traceability.

    Hardened Ultra-Wear-Resistant 440C Stainless Steel Balls

    Image of Product. Front orientation. Stainless Steel. Hardened Ultra-Wear-Resistant 440C Stainless Steel Balls.
    The best choice for high-performance bearings and valves, these 440C stainless steel balls are among the strongest, hardest, and most wear-resistant we offer. They’re passivated to wash away surface particles that cause rust, and they’re polished to a mirror-like finish that contaminants can’t stick to. The result is balls that stay smooth and stand the test of time—even at temperatures up to 800° F. They’re made to strict ISO 3290 standards for roundness and surface quality.
    These balls are magnetic, so you can use them in separators, sensors, and automated handling systems that use magnetic pickup or positioning.
    Grade 100—Great for mechanical applications where you don’t need the exacting tolerances of Grade 25.
    Grade 25—Precision-ground to tighter tolerances than Grade 100 balls. Use them in high-accuracy assemblies.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Dia.
    Dia. Tolerance
    Hardness
    Specs. Met
    Magnetic
    Properties
    Appearance
    Pkg.
    Qty.
    Pkg.
    Grade 100
    3/64"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290, SAE AMS5630MagneticMirror Like100000000000000
    1/16"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    5/64"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    3/32"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    7/64"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    1/8"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    9/64"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    5/32"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    11/64"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290, SAE AMS5630MagneticMirror Like100000000000000
    3/16"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    7/32"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like100000000000000
    1/4"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like100000000000000
    9/32"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like50000000000000
    5/16"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like50000000000000
    11/32"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like50000000000000
    3/8"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like50000000000000
    7/16"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like25000000000000
    1/2"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    9/16"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    5/8"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like5000000000000
    11/16"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like5000000000000
    3/4"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like5000000000000
    13/16"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like100000000000
    7/8"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like100000000000
    15/16"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like100000000000
    1"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like100000000000
    1 1/16"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like100000000000
    1 1/8"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    1 3/16"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    1 1/4"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    1 3/8"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    1 1/2"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    2"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    3"-0.0005" to 0.0005"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    1 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like250000000000000
    1.5 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like250000000000000
    2 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like250000000000000
    2.5 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like250000000000000
    3 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like250000000000000
    3.5 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    4 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like5000000000000
    5 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like50000000000000
    6 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like50000000000000
    7 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like2500000000000
    8 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like25000000000000
    10 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    12 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    13 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like500000000000
    14 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like5000000000000
    15 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like5000000000000
    16 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like3000000000000
    18 mm-0.0025 mm to 0.0025 mmRockwell C60 (Extra Hard)ISO 3290MagneticMirror Like3000000000000
     
    Grade 25
    1/16"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like5000000000000
    5/64"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like5000000000000
    3/32"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like5000000000000
    1/8"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like5000000000000
    9/64"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like25000000000000
    5/32"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like5000000000000
    3/16"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like50000000000000
    7/32"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like50000000000000
    1/4"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like50000000000000
    9/32"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like50000000000000
    5/16"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like50000000000000
    11/32"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like25000000000000
    3/8"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    13/32"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    7/16"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    1/2"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like10000000000000
    9/16"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like5000000000000
    5/8"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like5000000000000
    11/16"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like100000000000
    3/4"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like100000000000
    7/8"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like100000000000
    1"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    1 1/8"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    1 1/4"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    1 3/8"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    1 1/2"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
    2"-0.0001" to 0.0001"Rockwell C60 (Extra Hard)ISO 3290MagneticMirror Like1000000000000
     

    Hollow Stainless Steel Balls

    Image of Product. Front orientation. Stainless Steel. Ball.
    Balls are hollow. Use them in floats and ball valves. They have a reflective, mirror-like appearance.
    Hardened Heat Treatment—These balls are hardened for increased wear and abrasion resistance.
    440A Stainless Steel—440A stainless steel resists damage from impact and abrasion. These balls maintain their corrosion resistance in temperatures up to 250° F.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Dia.
    Dia. Tolerance
    Hardness
    Specs. Met
    Each
    Hardened 440A Stainless Steel
    1"-0.005" to 0.005"Rockwell C55 (Extra Hard)SAE AMS-QQ-S-7630000000000000
     

    Neodymium Ball Magnets

    Image of Product. Front orientation. Magnets. Neodymium Ball Magnets.
    Image of Specification. Magnetized Through Thickness. Front orientation. Contains Annotated. Magnets. Neodymium Ball Magnets.

    Magnetized

    Through

    Thickness

    Attract metal from all angles. These magnets create an even magnetic field around the sphere. They’re often used in rotating assemblies and sensor-calibration systems where full magnetic exposure is a must. With the highest strength-to-size ratio of any magnet, these deliver powerful pull force even in tight spaces.
    Warning: Maximum pull ratings are based on direct contact with rust-free, unpainted iron surfaces. Variations in material condition will significantly reduce these ratings. Do not use for lifting over people.
    Magnetized Through Thickness—Magnetized from one flat face to the other, these magnets deliver a concentrated magnetic force.
    Nickel Plated—With a nickel-plated finish, these magnets stand up to solvents, salt water, and chemicals better than uncoated neodymium. The plating may wear off over time, so these are not recommended for applications with a lot of friction or wear.
    Each
    OD
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    Direction of
    Magnetization
    Finish
    1-49
    50-Up
    1/8"0.5175N52Through ThicknessNickel Plated00000000000000000
    3/16"1.1175N52Through ThicknessNickel Plated000000000000000
    1/4"1170N35Through ThicknessNickel Plated00000000000000
    1/2"2170N35Through ThicknessNickel Plated000000000000000
    3/4"4170N35Through ThicknessNickel Plated0000000000000000
    1"28175N35Through ThicknessNickel Plated00000000000000000
     

    Create-Your-Own Ball Transfer Plates

    Image of ProductInUse. Front orientation. Ball Transfer Plates. Create-Your-Own Ball Transfer Plates.
    Image of Product. Front orientation. Contains Annotated. Ball Transfer Plates. Create-Your-Own Ball Transfer Plates.
    Snap these ball transfers together like jigsaw pieces to create a custom ball transfer plate, or use them unconnected to create your own pattern for rotating and positioning material. They have magnets embedded in the frame, so you can mount them on any flat magnetic metal surface and rearrange them as your operations change.
    Overall
    Frame
    Lg.
    Wd.
    Ht.
    Wt. Cap. per
    Ball, lb.
    Ball
    Dia.
    Ht.
    Material
    Color
    Mount
    Type
    Temp. Range,
    ° F
    Each
    Steel Balls with Steel Housing
    3 1/4"3 1/4"15/16"155/8"5/8"ABSBlackMagnet32 to 1750000000000000
    3 1/4"3 1/4"1 3/16"651"5/8"ABSBlackMagnet32 to 175000000000000
     
    back to top