McMaster-Carr logo
    Filter by
    Material
    Magnet Material
    System of Measurement
    Direction of Magnetization
    Magnet Grade
    Color
    Minimum Temperature
    Screw Size
    Industrial Info Compare
    Fabrication
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    123 Products
    About Magnets
    industrial info icon

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

    Alnico Disc Magnets

    Our most heat-resistant magnets won’t melt, deform, or lose magnetic strength in temperatures up to 1020° F. Use them in everything from magnetos and flow meters to fixturing tools. However, their magnetic hold isn't as strong as neodymium 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
    Image of Product. Front orientation. Magnets. Alnico Disc Magnets.
    Image of Specification. Magnetized Through Thickness. Front orientation. Contains Annotated. Magnets. Alnico Disc 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
    1/8"0.06970Alnico 8Through Thickness0000000000000
     
    1/4" Thick
    1/8"0.2970Alnico 8Through Thickness000000000000
    1/4"0.3970Alnico 8Through Thickness000000000000
    3/8"0.3970Alnico 8Through Thickness000000000000
    1/2"0.4970Alnico 8Through Thickness000000000000
     
    1/2" Thick
    1/4"1970Alnico 8Through Thickness000000000000
     
    1" Thick
    19/64"1.11,020Alnico 5Through Thickness00000000000
     
    2" Thick
    19/64"1.51,020Alnico 5Through Thickness00000000000
     
    3" Thick
    19/64"1.51,020Alnico 5Through Thickness00000000000
     
    4" Thick
    1/8"0.31,020Alnico 5Through Thickness00000000000
    1/8"0.41,020Alnico 8Through Thickness0000000000000
    1/4"1.51,020Alnico 8Through Thickness0000000000000
    19/64"1.91,020Alnico 5Through Thickness00000000000
    3/8"1.41,020Alnico 8Through Thickness0000000000000
    5/8"71,020Alnico 8Through Thickness00000000000000
     
    5" Thick
    3/16"0.71,020Alnico 5Through Thickness00000000000
     
    6" Thick
    1/4"1.41,020Alnico 5Through Thickness000000000000
    19/64"2.21,020Alnico 5Through Thickness000000000000
     
    8" Thick
    19/64"2.21,020Alnico 5Through Thickness000000000000
    3/8"31,020Alnico 5Through Thickness000000000000
    1/2"41,020Alnico 5Through Thickness000000000000
     
    Magnets With Unthreaded Hole
    Image of Product. Front orientation. Magnets. Alnico Disc Magnets, Magnets With Unthreaded Hole.
    Image of Specification. Magnetized Through Thickness. Front orientation. Contains Annotated. Magnets. Alnico Disc Magnets, Magnets With Unthreaded Hole.

    Magnetized

    Through

    Thickness

    Mount with pins, bolts, or rivets. There's no need for threading.
    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
    1/8" Thick
    3/8"3/32"0.4970Alnico 8Through ThicknessStraight00000000000000
     
    9/64" Thick
    17/32"1/4"0.1970Alnico 8Through ThicknessStraight000000000000
     
    7/32" Thick
    1 9/32"0.532"0.3970Alnico 8Through ThicknessStraight0000000000000
     
    17/64" Thick
    29/32"0.475"0.8970Alnico 8Through ThicknessStraight0000000000000
     
    1/2" Thick
    1"3/4"1.3970Alnico 5Through ThicknessStraight000000000000
     
    3/4" Thick
    1 1/2"1 1/8"3970Alnico 5Through ThicknessStraight000000000000
     
    1" Thick
    2"1 1/2"6970Alnico 5Through ThicknessStraight000000000000
     
    1 1/4" Thick
    2 1/2"1 7/8"8970Alnico 5Through ThicknessStraight000000000000
     
    1 1/2" Thick
    3"2 1/4"14970Alnico 5Through ThicknessStraight0000000000000
     

    Alnico U Magnets

    Image of Product. 1. Front orientation. Magnets. Alnico U Magnets, Style 1, Magnetized Through Length.
    Image of Product. 2. Front orientation. Magnets. Alnico U Magnets, Magnets With Unthreaded Hole, Style 2, Magnetized Through Length.

    1

    2

    Image of Product. 3. Front orientation. Magnets. Alnico U Magnets, Magnets With Unthreaded Hole, Style 3, Magnetized Through Length.
    Image of Specification. Magnetized Through Length. Front orientation. Contains Annotated. Magnets. Alnico U Magnets.

    3

    Magnetized

    Through

    Length

    Hold or lift metal parts with confidence. The U-shape brings the north and south poles close together, creating a dense magnetic field for powerful pull force. These heat-resistant magnets won’t melt, deform, or lose magnetic strength in temperatures up to 970° F. Also known as horseshoe 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
    Image of Product. 1. Front orientation. Magnets. Alnico U Magnets, Style 1, Magnetized Through Length.
    Image of Specification. Magnetized Through Length. Front orientation. Contains Annotated. Magnets. Alnico U Magnets.

    1

    Magnetized

    Through

    Length

    Magnetized Through Length—Magnetized end to end, these magnets channel magnetic energy on the longest axis. This orientation creates deep field penetration and directional pull.
    Style
    Wd.
    Opening
    Wd.
    Wd. at
    Poles
    Lg.
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    Direction of
    Magnetization
    Each
    1/4" Thick
    11 7/64"13/32"47/64"1 1/8"6970Alnico 5Through Length0000000000000
     
    19/64" Thick
    11 1/8"1/4"29/32"1"2.2970Alnico 5Through Length00000000000
    11 1/8"1/4"29/32"1"5970Alnico 5Through Length000000000000
     
    7/16" Thick
    11 1/2"3/8"1 1/4"1 1/4"9970Alnico 5Through Length000000000000
     
    5/8" Thick
    11 13/16"3/8"1 5/8"1 9/16"22970Alnico 5Through Length0000000000000
     
    3/4" Thick
    13"1"2 1/2"2 1/2"60970Alnico 5Through Length0000000000000
     
    1 1/4" Thick
    15"1 1/2"4"4 1/8"210970Alnico 5Through Length0000000000000
     
    Magnets With Unthreaded Hole
    Image of Product. 2. Front orientation. Magnets. Alnico U Magnets, Magnets With Unthreaded Hole, Style 2, Magnetized Through Length.
    Image of Product. 3. Front orientation. Magnets. Alnico U Magnets, Magnets With Unthreaded Hole, Style 3, Magnetized Through Length.
    Image of Attribute. Front orientation. Contains Annotated. Magnetized Through Length. Alnico U Magnets, Magnets With Unthreaded Hole, Magnetized Through Length.

    2

    3

    Magnetized

    Through

    Length

    Mount with pins, bolts, or rivets. There's no need for threading.
    Magnetized Through Length—Magnetized end to end, these magnets channel magnetic energy on the longest axis. This orientation creates deep field penetration and directional pull.
    Style
    Wd.
    Opening
    Wd.
    Wd. at
    Poles
    Hole
    Dia.
    Lg.
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    Direction of
    Magnetization
    Mounting
    Hole Style
    Each
    3/4" Thick
    31 1/8"9/16"1 1/16"3/16"3/4"13970Alnico 5Through LengthStraight0000000000000
     
    25/32" Thick
    31 3/16"0.59"1 3/16"0.197"25/32"9970Alnico 5Through LengthStraight000000000000
     
    15/16" Thick
    22 3/16"1 3/16"2 3/16"3/16"1 13/16"32970Alnico 5Through LengthStraight000000000000
    22 7/16"1 3/16"2 7/16"1/4"2"35970Alnico 5Through LengthStraight000000000000
    22 5/8"1 3/8"2 5/8"1/4"2 1/4"40970Alnico 5Through LengthStraight000000000000
    23"1 1/2"3"1/4"2 1/2"50970Alnico 5Through LengthStraight000000000000
     
    63/64" Thick
    31 37/64"0.787"1 37/64"0.197"63/64"19970Alnico 5Through LengthStraight000000000000
     
    1" Thick
    23"1 3/4"3"3/16"1 11/16"55970Alnico 5Through LengthStraight000000000000
    31 1/2"3/4"1 3/8"3/16"1"22970Alnico 5Through LengthStraight000000000000
     
    1 1/8" Thick
    31 3/4"7/8"1 1/2"3/16"1 1/8"30970Alnico 5Through LengthStraight000000000000
     
    1 3/16" Thick
    31 49/64"29/32"1 49/64"0.197"1 3/16"25970Alnico 5Through LengthStraight000000000000
     
    1 7/8" Thick
    32 1/2"1 3/8"2 1/2"1/4"1 13/16"70970Alnico 5Through LengthStraight0000000000000
     

    Alnico Rectangle Magnets

    Image of Product. Front orientation. Magnets. Alnico Rectangle Magnets.
    Image of Specification. Magnetized Through Length. Front orientation. Contains Annotated. Magnets. Alnico Rectangle Magnets.

    Magnetized

    Through

    Length

    Our most heat-resistant magnets won’t melt, deform, or lose magnetic strength in temperatures up to 1020° F. Use them in everything from magnetos and flow meters to fixturing tools. However, their magnetic hold isn't as strong as neodymium 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.
    Magnetized Through Length—Magnetized end to end, these magnets channel magnetic energy on the longest axis. This orientation creates deep field penetration and directional pull.
    Wd.
    Lg.
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    Direction of
    Magnetization
    Each
    1/8" Thick
    1/8"3/8"0.31,020Alnico 8Through Length0000000000000
    1/4"1/2"0.61,020Alnico 8Through Length000000000000
    3/8"4"1.71,020Alnico 5Through Length00000000000
    1/2"4"1.71,020Alnico 5Through Length00000000000
     
    3/16" Thick
    3/8"4"1.71,020Alnico 5Through Length00000000000
     
    1/4" Thick
    1/4"4"1.61,020Alnico 8Through Length0000000000000
    1/4"6"1.21,020Alnico 5Through Length000000000000
    1/2"6"1.91,020Alnico 5Through Length000000000000
     
    3/8" Thick
    3/8"6"2.81,020Alnico 5Through Length000000000000
     
    1/2" Thick
    1/2"6"51,020Alnico 5Through Length000000000000
    3/4"6"111,020Alnico 5Through Length000000000000
    1"6"131,020Alnico 5Through Length000000000000
     
    3/4" Thick
    3/4"6"151,020Alnico 5Through Length000000000000
     
    1" Thick
    1"6"191,020Alnico 5Through Length0000000000000
     

    Encased Alnico Disc Magnets

    Heat-resistant magnets that last. A built-in case shields them from cracks and chips caused by drops and bumps. These magnets won’t melt, deform, or lose magnetic strength in temperatures up to 420° F.
    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
    Image of Product. Front orientation. Magnets. Encased Alnico Disc Magnets, Magnets With Unthreaded Hole.
    Mount with pins, bolts, or rivets. There's no need for threading.
    Steel Case—Maximizes holding power by concentrating magnetic force.
    OD
    Hole
    Dia.
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    For Screw
    Size
    Each
    Steel Case
     
    19/64" Thick
    3/4"0.146"6420Alnico 5No. 6
    0000000000000
     
    11/32" Thick
    1 1/8"0.189"11420Alnico 5No. 8
    0000000000000
     
    13/32" Thick
    1 1/2"0.217"28420Alnico 5No. 8
    0000000000000
     
    Magnets With Threaded Hole
    Image of Product. Front orientation. Magnets. Encased Alnico Disc Magnets, Magnets With Threaded Hole.
    Internally threaded for secure mounting with screws or bolts.
    Steel Case—Maximizes holding power by concentrating magnetic force.
    Thread
    OD
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    Size
    Dp.
    Each
    Steel Case
     
    1/2" Thick
    1/4"0.2420Alnico 56-32
    0.188"0000000000000
    3/8"1.4420Alnico 56-32
    0.188"00000000000
    1/2"2.5420Alnico 56-32
    0.188"000000000000
    5/8"2.3420Alnico 510-24
    0.188"000000000000
    3/4"5420Alnico 510-24
    0.188"000000000000
    1"7420Alnico 51/4"-20
    0.188"000000000000
    1 1/4"6420Alnico 51/4"-20
    0.188"00000000000
     
    5/8" Thick
    11/16"5420Alnico 510-32
    0.16"000000000000
     
    3/4" Thick
    1/4"0.3420Alnico 56-32
    0.188"000000000000
    3/8"1.5420Alnico 56-32
    0.188"000000000000
    1/2"3420Alnico 56-32
    0.188"000000000000
    5/8"4420Alnico 510-24
    0.188"000000000000
    3/4"9420Alnico 510-24
    0.188"000000000000
    13/16"8420Alnico 510-32
    0.19"000000000000
    1"14420Alnico 51/4"-20
    0.188"000000000000
    1 1/4"15420Alnico 51/4"-20
    0.188"000000000000
     
    1" Thick
    1/4"0.4420Alnico 56-32
    0.188"000000000000
    3/8"1.7420Alnico 56-32
    0.188"000000000000
    1/2"3420Alnico 56-32
    0.188"00000000000
    5/8"4420Alnico 510-24
    0.188"000000000000
    3/4"9420Alnico 510-24
    0.188"00000000000
    1"16420Alnico 51/4"-20
    0.188"000000000000
    1 1/16"13420Alnico 510-32
    1/4"0000000000000
    1 1/4"22420Alnico 51/4"-20
    0.188"000000000000
     
    1 3/16" Thick
    1 3/8"32420Alnico 510-32
    0.3"0000000000000
     
    1 1/4" Thick
    1 1/4"25420Alnico 51/4"-20
    0.188"000000000000
     

    Alnico Button Magnets

    Clamp, hold, and position metal parts. These magnets have both north and south poles on the same face for strong, flush contact. A slot and mounting hole help you mount them in jigs and fixtures. Although not as strong as U-shaped magnets, button magnets have a flat base for stable clamping. They won’t melt, deform, or lose magnetic strength in temperatures up to 970° F.
    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
    Image of Product. Front orientation. Magnets. Alnico Button Magnets, Magnets With Unthreaded Hole.
    Mount with pins, bolts, or rivets. There's no need for threading.
    OD
    Hole
    Dia.
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    Mounting
    Hole Style
    Each
    3/8" Thick
    1/2"11/64"1.5970Alnico 5Straight000000000000
     
    1/2" Thick
    3/4"3/16"4970Alnico 5Straight00000000000
    3/4"7/32"4970Alnico 5Straight0000000000
     
    5/8" Thick
    1"3/16"7970Alnico 5Straight00000000000
     
    3/4" Thick
    1 1/4"3/16"14970Alnico 5Straight000000000000
     
    7/8" Thick
    1 1/2"1/4"18970Alnico 5Straight000000000000
     
    1" Thick
    7/8"1/4"9970Alnico 5Straight0000000000
    1 1/4"9/32"10970Alnico 5Straight000000000000
     
    1 3/4" Thick
    1 1/2"3/8"35970Alnico 5Straight00000000000
     

    Alnico Rotor Magnets

    Image of Product. Front orientation. Magnets. Alnico Rotor Magnets.
    Achieve reliable rotation in motors, turbine generators, and other electromechanical systems. These magnets mount on shafts to create a uniform magnetic field around the axis. They won’t melt, deform, or lose magnetic strength in temperatures up to 970° F.
    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.
    OD
    Hole
    Dia.
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Sets of
    Poles
    Magnet
    Grade
    Mounting
    Hole Style
    Each
    3/4" Thick
    1"1/4"169702Alnico 5Straight000000000000
    1 1/4"1/4"259703Alnico 5Straight00000000000
     
    7/8" Thick
    1 1/2"3/8"309703Alnico 5Straight00000000000
     
    1 1/4" Thick
    2"1/2"759704Alnico 5Straight000000000000
     

    Alnico U-Channel Magnets

    Image of Product. Front orientation. Magnets. Alnico U-Channel Magnets.
    Image of Specification. Magnetized Through Length. Front orientation. Contains Annotated. Magnets. Alnico U-Channel Magnets.

    Magnetized

    Through Length

    Mount flush in everything from tool holders to fixture plates. These magnets are encased in a channel that concentrates the magnetic field on one side, creating a strong hold on flat surfaces. They're also heat resistant, so they won’t melt, deform, or lose magnetic strength in temperatures up to 1020° F.
    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 Length—Magnetized end to end, these magnets channel magnetic energy on the longest axis. This orientation creates deep field penetration and directional pull.
    Wd.
    U-Channel
    Wd.
    Lg.
    Max. Pull,
    lbf
    Max. Temp.,
    ° F
    Magnet
    Grade
    Direction of
    Magnetization
    Each
    5/16" Thick
    1/2"3/16"5"111,020Alnico 5Through Length0000000000000
     
    3/8" Thick
    5/8"1/4"5"161,020Alnico 5Through Length000000000000
     
    1/2" Thick
    3/4"1/4"6"341,020Alnico 5Through Length000000000000
     
    5/8" Thick
    1"3/8"6"401,020Alnico 5Through Length0000000000000
     
    3/4" Thick
    1 1/4"7/16"6"601,020Alnico 5Through Length0000000000000
     
    7/8" Thick
    1 1/2"1/2"6"601,020Alnico 5Through Length0000000000000
     

    Magnetic Female Round Standoffs

    Image of Product. Front orientation. Standoffs. Magnetic Female Round Standoffs.
    Image of Product. Front orientation. Standoffs. Magnetic Female Round Standoffs.
    Image of Attribute. Partially Threaded. Front orientation. Contains Annotated. Standoffs. Magnetic Female Round Standoffs.

    Partially

    Threaded

    Mount or reposition male-threaded parts instantly—these magnetic-backed standoffs snap onto metal surfaces. Install on displays, test rigs, and tight spaces where permanent mounting isn't practical.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Alnico Magnet—Retain their magnetic strength, even when exposed to high temperatures.
    Lg.,
    mm
    OD,
    mm
    Threading
    Min. Thread
    Lg., mm
    Max. Pull,
    lbf
    Magnet
    Material
    Max. Temp.,
    ° F
    Each
    Zinc-Plated Steel
     
    M3 × 0.5 mm
    206Partially Threaded50.4Alnico840000000000000000
    208Partially Threaded50.8Alnico84000000000000000
     
    M4 × 0.7 mm
    2010Partially Threaded71.9Alnico84000000000000000
    2013Partially Threaded72.6Alnico84000000000000000
    2016Partially Threaded54.4Alnico84000000000000000
     
    M6 × 1 mm
    2520Partially Threaded78.9Alnico84000000000000000
     

    Magnetic Male Round Standoffs

    Image of Product. Front orientation. Standoffs. Magnetic Male Round Standoffs.
    Image of Product. Front orientation. Standoffs. Magnetic Male Round Standoffs.
    Mount or reposition internally-threaded parts instantly—these magnetic-backed standoffs snap onto metal surfaces. Install on displays, test rigs, and tight spaces where permanent mounting isn't practical.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Alnico Magnet—Retain their magnetic strength, even when exposed to high temperatures.
    Lg.,
    mm
    OD,
    mm
    Thread
    Lg., mm
    Max. Pull,
    lbf
    Magnet
    Material
    Max. Temp.,
    ° F
    Each
    Zinc-Plated Steel
     
    M3 × 0.5 mm
    20670.4Alnico840000000000000000
    20870.8Alnico84000000000000000
     
    M4 × 0.7 mm
    201081.9Alnico84000000000000000
    201382.6Alnico84000000000000000
    2016104.4Alnico84000000000000000
     
    M6 × 1 mm
    2520108.9Alnico84000000000000000
     
    back to top