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    102 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.
    Stainless
    Steel Balls
    5 lb. Packs of
    Stainless Steel Balls
    Dia.
    Dia. Tolerance
    Hardness
    Specs. Met
    Magnetic
    Properties
    Appearance
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    Grade 100
    3/64"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290, SAE AMS5630MagneticMirror Like1009529K5800000———0
    1/16"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like1009529K140000———0
    5/64"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like1009529K340000———0
    3/32"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like1009529K330000———0
    7/64"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like1009529K350000———0
    1/8"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like1009529K110000———0
    9/64"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like1009529K360000———0
    5/32"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like1009529K120000———0
    11/64"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290, SAE AMS5630MagneticMirror Like1009529K5900000———0
    3/16"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like1009529K1300005,1409529K1310000000
    7/32"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like1009529K4400000———0
    1/4"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like1009529K15000002,1609529K151000000
    9/32"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509529K1600000———0
    5/16"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509529K1700000———0
    11/32"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509529K1800000———0
    3/8"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509529K1900000———0
    7/16"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like259529K2100000———0
    1/2"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like109529K2200002509529K221000000
    9/16"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like109529K230000———0
    5/8"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like59529K2400000———0
    11/16"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like59529K2500000———0
    3/4"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like59529K2600000809529K261000000
    13/16"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19529K270000———0
    7/8"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19529K280000———0
    15/16"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19529K290000———0
    1"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19529K310000309529K311000000
    1 1/16"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19529K3200000———0
    1 1/8"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19529K5400000———0
    1 3/16"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19529K5500000———0
    1 1/4"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19529K4900000159529K491000000
    1 3/8"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19529K5600000———0
    1 1/2"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19529K5100000109529K511000000
    2"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19529K5300000———0
    3"-0.0005" to 0.0005"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19529K57000000———0
    1 mm-0.0127 mm to 0.0127 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like2501598K160000———0
    1.5 mm-0.0127 mm to 0.0127 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like2501598K170000———0
    2 mm-0.0127 mm to 0.0127 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like2501598K180000———0
    2.5 mm-0.0127 mm to 0.0127 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like2501598K2200000———0
    3 mm-0.0127 mm to 0.0127 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like2501598K2300000———0
    5 mm-0.0127 mm to 0.0127 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like501598K260000———0
    10 mm-0.0127 mm to 0.0127 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like101598K3200000———0
     
    Grade 25
    1/16"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509642K210000———0
    5/64"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509642K230000———0
    3/32"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509642K250000———0
    1/8"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509642K290000———0
    9/64"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like259642K310000———0
    5/32"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509642K330000———0
    3/16"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509642K350000———0
    7/32"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509642K370000———0
    1/4"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509642K3900000———0
    9/32"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509642K4300000———0
    5/16"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like509642K4500000———0
    11/32"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like259642K4700000———0
    3/8"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like109642K490000———0
    13/32"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like109642K5100000———0
    7/16"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like109642K5300000———0
    1/2"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like109642K5700000———0
    9/16"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like59642K5900000———0
    5/8"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like59642K6100000———0
    11/16"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19642K620000———0
    3/4"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19642K630000———0
    7/8"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19642K650000———0
    1"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19642K6700000———0
    1 1/8"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19642K6900000———0
    1 1/4"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19642K7100000———0
    1 3/8"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19642K7200000———0
    1 1/2"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19642K7300000———0
    2"-0.0001" to 0.0001"Rockwell C58 (Extra Hard)ISO 3290MagneticMirror Like19642K7400000———0
    3.5 mm-0.0025 mm to 0.0025 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like1001598K2400000———0
    4 mm-0.0025 mm to 0.0025 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like501598K250000———0
    6 mm-0.0025 mm to 0.0025 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like501598K27000002,5701598K271000000
    7 mm-0.0025 mm to 0.0025 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like251598K2800000———0
    8 mm-0.0025 mm to 0.0025 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like251598K2900000———0
    12 mm-0.0025 mm to 0.0025 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like101598K3300000———0
    13 mm-0.0025 mm to 0.0025 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like51598K3400000———0
    14 mm-0.0025 mm to 0.0025 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like51598K3500000———0
    15 mm-0.0025 mm to 0.0025 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like51598K3600000———0
    16 mm-0.0025 mm to 0.0025 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like31598K3700000———0
    18 mm-0.0025 mm to 0.0025 mmRockwell C58 (Extra Hard)ISO 3290MagneticMirror Like31598K3800000951598K381000000
     

    Hollow 440A Stainless Steel Balls

    Image of Product. Front orientation. Stainless Steel. Hollow 440A Stainless Steel Balls.
    These lightweight balls are often used in floats, valves, and other parts to regulate liquid level and flow. Made of 440A stainless steel, they resist impact and corrosion in temperatures up to 250° F. Their polished surface prevents contaminants from sticking to them.
    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
    Wall
    Thk.
    Hardness
    Specs. Met
    Each
    Hardened 440A Stainless Steel
    1"-0.005" to 0.005"0.054"Rockwell C55 (Extra Hard)SAE AMS-QQ-S-7639327K33000000
     

    Neodymium Ball Magnets

    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.
    Standard 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

    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 Plated3945K310000000000
    3/16"1.1175N52Through ThicknessNickel Plated3945K3200000000
    1/4"1170N35Through ThicknessNickel Plated3945K200000000
    1/2"2170N35Through ThicknessNickel Plated3945K3000000000
    3/4"4170N35Through ThicknessNickel Plated3945K40000000000
    1"28175N35Through ThicknessNickel Plated3945K110000000000
     

    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 1753139N11000000
    3 1/4"3 1/4"1 3/16"651"5/8"ABSBlackMagnet32 to 1753139N1200000
     

    Hardened Highly Wear-Resistant 420 Stainless Steel Balls

    Image of Product. Front orientation. Stainless Steel. Hardened Highly Wear-Resistant 420 Stainless Steel Balls.
    Often used for bearings, detents, and locking mechanisms, these 420 stainless steel balls balance hardness with corrosion resistance. They resist corrosion better than 440C, but they’re slightly softer, so they wear more quickly. 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 750° 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.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Stainless
    Steel Balls
    Dia.
    Dia. Tolerance
    Hardness
    Specs.
    Met
    Magnetic
    Properties
    Appearance
    Pkg.
    Qty.
    Pkg.
    Grade 100
    1/8"-0.0005" to 0.0005"Rockwell C50 (Hard)ISO 3290MagneticMirror Like5009467N11000000
    3/16"-0.0005" to 0.0005"Rockwell C50 (Hard)ISO 3290MagneticMirror Like2509467N1200000
    1/4"-0.0005" to 0.0005"Rockwell C50 (Hard)ISO 3290MagneticMirror Like2509467N1300000
    5/16"-0.0005" to 0.0005"Rockwell C50 (Hard)ISO 3290MagneticMirror Like1009467N1400000
    1/2"-0.0005" to 0.0005"Rockwell C50 (Hard)ISO 3290MagneticMirror Like1009467N1500000
     
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