McMaster-Carr logo
    Filter by
    System of Measurement
    Direction of Magnetization
    Mounting Hole Style
    Number of Mounting Holes
    Sets of Poles
    DFARS Specialty Metals
    Industrial Info Compare
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    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)
    64 Products
    About Magnets
    industrial info icon

    Choose a magnet with the right strength, material, and temperature resistance for your application.

    Mount Type

    Mount Type

    Construction

    Ceramic Disc Magnets

    Our most economical magnets cut costs, not reliability. They stay strong in temperatures up to 400° F and resist some corrosion. They’re also nonconductive to prevent short circuits in DC motors, transformers, and speakers. However, they are not as strong as rare earth magnets.
    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. Ceramic Disc Magnets, Standard Magnets.
    Image of Specification. Magnetized Through Thickness. Front orientation. Contains Annotated. Magnets. Ceramic Disc Magnets, Standard Magnets.

    Magnetized

    Through

    Thickness

    Magnetized Through Thickness—Magnetized from one flat face to the other, these magnets deliver a concentrated magnetic force. They’re best for direct contact with flat surfaces.
    OD
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    Direction of
    Magnetization
    Each
    1/8" Thick
    5/16"0.2400C5Through Thickness5857K1700000
    9/16"0.4400C5Through Thickness5857K250000
     
    1/4" Thick
    11/32"0.5400C5Through Thickness5857K230000
    45/64"1400C5Through Thickness5857K260000
     
    9/32" Thick
    1/4"0.4400C5Through Thickness5857K160000
     
    3/8" Thick
    5/8"1.3400C5Through Thickness5857K180000
     
    13/32" Thick
    3/8"0.9400C5Through Thickness5857K240000
     
    1/2" Thick
    3"8400C5Through Thickness5857K2100000
     
    5/8" Thick
    1"3400C5Through Thickness5857K280000
     
    3/4" Thick
    2"8400C5Through Thickness5857K1900000
    3"12400C5Through Thickness5857K2200000
     
    Magnets With Unthreaded Hole
    Image of Product. Front orientation. Magnets. Ceramic Disc Magnets, Magnets With Unthreaded Hole.
    Image of Specification. Magnetized Through Thickness. Front orientation. Contains Annotated. Magnets. Ceramic Disc Magnets, Magnets With Unthreaded Hole.

    Magnetized

    Through

    Thickness

    Magnetized Through Thickness—Magnetized from one flat face to the other, these magnets deliver a concentrated magnetic force. They’re best for direct contact with flat surfaces.
    OD
    Hole
    Dia.
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    Direction of
    Magnetization
    Mounting
    Hole Style
    Each
    3/16" Thick
    1 1/4"3/8"1400C5Through ThicknessStraight5856K1200000
     
    9/32" Thick
    2 3/8"1"3400C5Through ThicknessStraight5856K140000
     
    5/16" Thick
    1 49/64"0.866"2.5400C5Through ThicknessStraight5856K130000
     
    21/64" Thick
    2 51/64"1 13/64"4400C5Through ThicknessStraight5856K150000
     
    13/32" Thick
    4 35/64"1 3/4"9400C5Through ThicknessStraight5856K1700000
     
    27/64" Thick
    3 3/8"1.28"7400C5Through ThicknessStraight5856K1600000
     
    35/64" Thick
    5 17/64"2.21"17400C5Through ThicknessStraight5856K1800000
     

    Encased Ceramic Disc Magnets

    Image of Product. 2. Front orientation. Magnets. Encased Ceramic Disc Magnets, Magnets With Unthreaded Hole, Style 2.
    Image of Product. 3. Front orientation. Magnets. Encased Ceramic Disc Magnets, Magnets With Unthreaded Hole, Style 3.

    2

    3

    Our most economical magnets with built-in durability. A protective case shields them from cracks and chips caused by bumps and drops. Ceramic magnets deliver a cost-effective balance of corrosion and temperature resistance. However, they are not as strong as rare earth magnets.
    Warning: Maximum pull ratings are based on direct contact with rust-free, unpainted iron surfaces. Variations in material condition will significantly reduce holding strength. Do not use for lifting over people.
    Magnets With Unthreaded Hole
    Image of Product. 2. Front orientation. Magnets. Encased Ceramic Disc Magnets, Magnets With Unthreaded Hole, Style 2.
    Image of Product. 3. Front orientation. Magnets. Encased Ceramic Disc Magnets, Magnets With Unthreaded Hole, Style 3.

    2

    3

    Zinc-Plated Steel Case—Withstands occasional exposure to moisture.
    Chrome-Plated Steel Case—The bright, shiny finish resists salt water and chemicals better than other finishes and is less likely to wear off.
    Style
    Thk.
    OD
    Hole
    Dia.
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    Mounting Hole
    Style
    For Screw
    Size
    Each
    Zinc-Plated Steel Case
    215/64"0.79"0.165"5245C5CountersunkNo. 6
    		5685K5100000
    25/16"1 9/16"0.217"19245C5CountersunkNo. 12
    		5685K520000
     
    Chrome-Plated Steel Case
    211/64"1 13/64"1/8"4170C5StraightNo. 5
    		5685K410000
    219/64"1 45/64"0.153"12170C5StraightNo. 6
    		5685K420000
    25/16"2 3/16"13/64"30170C5StraightNo. 10
    		5685K450000
    211/32"2 3/8"13/64"45170C5StraightNo. 10
    		5685K430000
    23/8"2 51/64"1/4"75170C5Straight1/4"
    		5685K460000
    233/64"3 55/64"3/8"110170C5Straight3/8"
    		5685K4400000
    319/64"2 1/32"3/16"35170C5StraightNo. 8
    		5685K820000
    333/64"3 3/8"3/8"120170C5Straight5/16"
    		5685K8100000
     

    Threaded Encased Ceramic Disc Magnets

    Image of Product. 1. Front orientation. Magnets. Encased, Disc, Ferrite Ceramic, Threaded-Hole Mount, Style 1.

    1

    Thread our most economical magnets into position, then readjust if needed. With built-in durability, a protective case shields these from cracks and chips caused by bumps and drops. Ceramic magnets deliver a cost-effective balance of corrosion and temperature resistance. However, they are not as strong as rare earth magnets.
    Warning: Maximum pull ratings are based on direct contact with rust-free, unpainted iron surfaces. Variations in material condition will significantly reduce holding strength. Do not use for lifting over people.
    Magnets With Threaded Hole
    Image of Product. 1. Front orientation. Magnets. Encased, Disc, Ferrite Ceramic, Threaded-Hole Mount, Style 1.

    1

    Internally threaded for secure mounting with screws or bolts.
    Zinc-Plated Steel Case—Withstands occasional exposure to moisture.
    Thread
    Style
    Thk.,
    mm
    OD,
    mm
    Post Lg.,
    mm
    Overall
    Lg., mm
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    Mounting
    Hole Style
    Size
    Dp.,
    mm
    Each
    Zinc-Plated Steel Case
    14.510711.50.5245C5StraightM3 × 0.5 mm75819K5500000
    14.513711.52245C5StraightM3 × 0.5 mm75819K560000
    14.516711.53.5245C5StraightM3 × 0.5 mm75819K570000
    17258158.5245C5StraightM4 × 0.7 mm85819K580000
    17.7368.31622245C5StraightM4 × 0.7 mm8.35819K590000
    194781739245C5StraightM4 × 0.7 mm85819K6100000
    11050122248245C5StraightM6 × 1 mm125819K6200000
    11463163077245C5StraightM8 × 1.25 mm165819K6300000
    118801634132245C5StraightM10 × 1.5 mm165819K6400000
    120902040154245C5StraightM10 × 1.5 mm205819K6500000
    1221002042198245C5StraightM12 × 1.75 mm205819K6600000
    1261252450286245C5StraightM14 × 2 mm245819K6700000
     

    Ceramic Rectangle Magnets

    Image of Product. Front orientation. Magnets. Ceramic Rectangle Magnets.
    Image of Specification. Magnetized Through Thickness. Front orientation. Contains Annotated. Magnets. Ceramic Rectangle Magnets.

    Magnetized

    Through

    Thickness

    Our most economical magnets cut costs, not reliability. They stay strong in temperatures up to 400° F and resist some corrosion. They’re also nonconductive to prevent short circuits in DC motors, transformers, and speakers. However, they are not as strong as rare earth magnets.
    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
    Magnetized Through Thickness—Magnetized from one flat face to the other, these magnets deliver a concentrated magnetic force. They’re best for direct contact with flat surfaces.
    Wd.
    Lg.
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    Direction of
    Magnetization
    Each
    1/4" Thick
    1/4"1 1/4"2400C5Through Thickness5738K7800000
    1/4"3"1.4400C5Through Thickness5738K620000
    3/8"3/4"1.5400C5Through Thickness5738K730000
    3/8"1 1/2"1.2400C5Through Thickness5738K610000
    3/4"3/4"2.1400C5Through Thickness5738K740000
    2"3"3400C5Through Thickness5738K630000
     
    1/2" Thick
    1/2"1/2"1.6400C5Through Thickness5738K760000
    1"6"7400C5Through Thickness5738K6400000
     
    1" Thick
    1"1"6400C5Through Thickness5738K770000
    2"3"24400C5Through Thickness5738K6600000
    2"6"21400C5Through Thickness5738K6500000
     

    Encased Ceramic Rectangle Magnets

    Our most economical magnets with built-in durability. A protective case shields them from cracks and chips caused by bumps and drops. Ceramic magnets deliver a cost-effective balance of corrosion and temperature resistance. However, they are not as strong as rare earth magnets.
    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.
    Magnets With Unthreaded Hole
    Steel Case—Maximizes holding power by concentrating magnetic force.
    Zinc-Plated Steel Case—Withstands occasional exposure to moisture.
    Nickel-Plated Steel Case—Offers similar corrosion resistance to chrome plating to withstand salt water and chemicals. However, nickel is more likely to wear off over time.
    Style
    Thk.
    Wd.
    Lg.
    Hole
    Dia.
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    Mounting
    Hole Style
    For Screw
    Size
    Each
    Steel Case
    31 3/8"7/8"3 1/4"9/32"40600C5Straight1/4"
    		57005K31000000
    31 3/8"7/8"5 1/4"9/32"65600C5Straight1/4"
    		57005K3300000
    31 3/8"1 1/4"3 1/4"9/32"55600C5Straight1/4"
    		57005K5700000
    31 3/8"1 1/4"5 1/4"9/32"120600C5Straight1/4"
    		57005K3400000
    32 1/8"1 7/8"5 1/4"9/32"250600C5Straight1/4"
    		57005K3800000
     
    Zinc-Plated Steel Case
    33/8"1 3/8"5 1/2"9/32"46170C5Straight1/4"
    		57005K610000
    31/2"1 3/8"5 1/2"9/32"53170C5Straight1/4"
    		57005K6200000
    35/8"1 1/2"12"9/32"119170C5Straight1/4"
    		57005K6300000
    35/8"2"12"9/32"123170C5Straight1/4"
    		57005K6400000
    35/8"2 1/2"12"9/32"128170C5Straight1/4"
    		57005K6500000
     
    Nickel-Plated Steel Case
    39/16"1"4 1/2"9/32"40175C5Straight1/4"
    		57005K410000
    39/16"1"6 1/2"9/32"55175C5Straight1/4"
    		57005K4200000
    39/16"1"12 1/2"9/32"120175C5Straight1/4"
    		57005K4300000
     
    back to top