McMaster-Carr logo
    System of Measurement
    System of Measurement
    Inch
    Metric
    Rail Profile
    Rail Profile
    Single
    Double
    Quad
    Triple
    Length
    Length
    1/8"
    3/8"
    7/16"
    1/2"
    9/16"
    5/8"
    11/16"
    23/32"
    3/4"
    51/64"
    13/16"
    7/8"
    15/16"
    1"
    1 1/16"
    1 1/8"
    1 3/16"
    1 7/32"
    1 1/4"
    1 5/16"
    1 3/8"
    1 27/64"
    1 7/16"
    1 1/2"
    1 9/16"
    1 37/64"
    1 39/64"
    1 5/8"
    1 11/16"
    1 45/64"
    1 3/4"
    1 49/64"
    1 13/16"
    1 27/32"
    1 7/8"
    1 15/16"
    2"
    2 1/16"
    2 1/8"
    2 3/16"
    2 1/4"
    2 5/16"
    2 3/8"
    2 7/16"
    2 1/2"
    2 9/16"
    2 5/8"
    2 11/16"
    2 3/4"
    2 13/16"
    2 7/8"
    2 15/16"
    3"
    3 1/16"
    3 1/8"
    3 5/32"
    3 3/16"
    3 1/4"
    3 5/16"
    3 3/8"
    3 25/64"
    3 7/16"
    3 1/2"
    3 9/16"
    3 5/8"
    3 11/16"
    3 3/4"
    3 13/16"
    3 7/8"
    3 15/16"
    4"
    4 1/64"
    4 1/16"
    4 1/8"
    4 3/16"
    4 1/4"
    4.31"
    4 5/16"
    4 3/8"
    4 7/16"
    4 1/2"
    4 9/16"
    4 5/8"
    4 11/16"
    4 3/4"
    4 13/16"
    4 7/8"
    4 15/16"
    5"
    5 1/16"
    5 1/8"
    5 3/16"
    5 1/4"
    5 5/16"
    5 3/8"
    5 7/16"
    5 1/2"
    5 9/16"
    5 5/8"
    5 11/16"
    5 3/4"
    5 13/16"
    5 7/8"
    5 15/16"
    1/2 ft.
    6 1/16"
    6 1/8"
    6 1/4"
    6 5/16"
    6 3/8"
    6 7/16"
    6 1/2"
    6 5/8"
    6 11/16"
    6 3/4"
    6 3/4" to 10 3/4"
    6 13/16"
    6 7/8"
    6 15/16"
    7"
    7 1/16"
    7 1/8"
    7 3/16"
    7 1/4"
    7 5/16"
    7 3/8"
    7 1/2"
    7 5/8"
    7 11/16"
    7 3/4"
    7 13/16"
    7 7/8"
    8"
    8 1/16"
    8 1/8"
    8 1/4"
    8 3/8"
    8 7/16"
    8 1/2"
    8 5/8"
    8 11/16"
    8 3/4"
    8 13/16"
    8 7/8"
    8 15/16"
    9"
    9" to 15"
    9 1/8"
    9 3/16"
    9 1/4"
    9 7/16"
    9 1/2"
    9 5/8"
    9 11/16"
    9 3/4"
    9 13/16"
    10"
    10 1/4"
    10 5/16"
    10 1/2"
    10 5/8"
    10 3/4"
    10 13/16"
    11"
    11 1/8"
    11 1/4"
    11 3/8"
    11 1/2"
    1 ft.
    12 1/8"
    12 1/4"
    12 1/2"
    12 3/4"
    12 13/16"
    13"
    13 1/4"
    13 3/8"
    13 7/16"
    13 1/2"
    13 5/8"
    13 11/16"
    13 3/4"
    14"
    14 1/16"
    14 1/8"
    14 1/4"
    14 1/2"
    14 5/8"
    15"
    15 1/4"
    15 5/8"
    15 11/16"
    15 3/4"
    16"
    16 1/16"
    16 1/4"
    16 1/2"
    16 3/4"
    17 1/4"
    17 5/8"
    17 3/4"
    1 1/2ft.
    1'6"
    18 1/8"
    18 1/4"
    18 5/8"
    18 3/4"
    19"
    19 1/4"
    19 11/16"
    19 3/4"
    20"
    20 1/4"
    20 1/2"
    20 3/4"
    21 5/8"
    22"
    22" to 28"
    22 1/4"
    22 7/16"
    23"
    23 1/4"
    2 ft.
    25"
    25 3/16"
    25 7/8"
    2'2"
    26"
    30"
    30 1/2"
    30 5/8"
    32 1/4"
    3 ft.
    3'1 1/2"
    37 5/8"
    39"
    39 3/8"
    40"
    42"
    3'6"
    44"
    45"
    47"
    4 ft.
    49 1/2"
    4'2"
    4 1/2 ft.
    57 5/8"
    5 ft.
    5'1 1/2"
    5 1/2 ft.
    6 ft.
    74"
    6 1/2ft.
    6'8"
    7 ft.
    85" to 95"
    7'6"
    7'6"-10'0"
    92" to 102"
    8 ft.
    8'1 1/2"
    8'2"
    8 1/2 ft.
    9ft.
    9 3/4ft.
    10 ft.
    10'1 1/2"
    12ft.
    20 ft.
    100 ft.
    12.7mm
    30 mm
    35 mm
    40 mm
    45 mm
    47mm
    50 mm
    55 mm
    60 mm
    65 mm
    70 mm
    75mm
    80mm
    90 mm
    100mm
    110 mm
    120 mm
    130 mm
    140 mm
    150 mm
    160mm
    170mm
    180 mm
    200 mm
    300 mm
    Additional Lengths
    1'2"
    Mounting Fastener Thread Size
    Mounting Fastener
    Thread Size
    click to learn more about
    6-32
    learn more about 6-32 by pressing accesskey, i.
    10-32
    learn more about 10-32 by pressing accesskey, i.
    1/4"-20
    learn more about 1/4"-20 by pressing accesskey, i.
    5/16"-18
    learn more about 5/16"-18 by pressing accesskey, i.
    M3
    learn more about M3 by pressing accesskey, i.
    M4
    learn more about M4 by pressing accesskey, i.
    M5
    learn more about M5 by pressing accesskey, i.
    M6
    learn more about M6 by pressing accesskey, i.
    M7
    learn more about M7 by pressing accesskey, i.
    M8
    learn more about M8 by pressing accesskey, i.
    M12
    learn more about M12 by pressing accesskey, i.
    DFARS (Defense Acquisition Regulations Supplement)
    DFARS (Defense Acquisition
    Regulations Supplement)
    click to learn more about
    DFARS Specialty Metals
    COTS-Exempt
    learn more about DFARS Specialty Metals COTS-Exempt by pressing accesskey, i.
    DFARS Specialty Metals
    Compliant
    learn more about DFARS Specialty Metals Compliant by pressing accesskey, i.
    RoHS (Restriction of Hazardous Substances)
    RoHS (Restriction of
    Hazardous Substances)
    RoHS Compliant
    RoHS Compliant with
    Exemptions
    ID
    ID
    default
    0.02"
    0.035"
    0.039"
    0.050"
    0.055"
    0.061"
    1/16"
    0.066"
    0.069"
    0.079"
    0.081"
    0.09"
    0.097"
    0.113"
    0.118"
    0.12"
    0.123"
    0.124"
    1/8"
    0.128"
    0.132"
    0.135"
    0.144"
    0.145"
    0.152"
    5/32"
    0.159"
    0.16"
    0.175"
    0.18"
    0.183"
    0.186"
    3/16"
    3/16" to 1/4"
    0.191"
    0.194"
    0.196"
    0.198"
    0.207"
    0.209"
    0.21"
    0.215"
    0.218"
    0.222"
    0.235"
    0.236"
    0.243"
    0.245"
    0.248"
    0.249"
    1/4"
    1/4" to 5/16"
    0.253"
    0.257"
    0.259"
    0.26"
    0.270"
    0.272"
    0.277"
    0.280"
    0.284"
    0.285"
    0.305"
    0.308"
    0.31"
    0.311"
    0.312"
    5/16"
    5/16" to 3/8"
    0.313"
    0.314"
    0.316"
    0.319"
    0.322"
    0.323"
    0.328"
    0.334"
    0.337"
    0.34"
    0.343"
    0.347"
    0.37"
    0.374"
    3/8"
    3/8" to 7/16"
    3/8" to 1/2"
    3/8" to 11/16"
    0.378"
    0.382"
    0.384"
    0.385"
    0.39"
    0.397"
    0.402"
    0.405"
    13/32"
    0.41"
    0.43"
    0.433"
    0.436"
    0.437"
    7/16"
    7/16" to 1/2"
    0.438"
    0.441"
    0.444"
    0.448"
    0.459"
    0.468"
    0.472"
    0.495"
    0.499"
    1/2"
    1/2" to 5/8"
    0.503"
    0.507"
    0.509"
    0.51"
    0.520"
    0.527"
    0.530"
    0.531"
    0.535"
    0.546"
    0.555"
    0.56"
    0.561"
    0.562"
    9/16"
    9/16" to 5/8"
    9/16" to 3/4"
    0.566"
    0.569"
    0.584"
    0.593"
    0.597"
    0.62"
    0.624"
    5/8"
    5/8" to 3/4"
    5/8" to 7/8"
    0.628"
    0.634"
    0.635"
    0.652"
    0.657"
    0.672"
    0.68"
    0.685"
    0.686"
    11/16"
    11/16" to 3/4"
    0.688"
    0.694"
    0.697"
    0.702"
    0.709"
    0.717"
    0.745"
    0.749"
    3/4"
    3/4" to 13/16"
    3/4" to 7/8"
    3/4" to 1 1/8"
    0.759"
    0.76"
    0.777"
    0.785"
    0.805"
    0.81"
    0.812"
    13/16"
    13/16" to 7/8"
    13/16" to 15/16"
    13/16" to 1"
    0.824"
    0.827"
    0.834"
    0.846"
    0.87"
    0.874"
    7/8"
    7/8" to 1"
    7/8" to 6 5/8"
    0.884"
    0.885"
    0.898"
    0.902"
    0.915"
    0.93"
    0.935"
    15/16"
    15/16" to 1 1/16"
    0.938"
    0.944"
    0.952"
    0.957"
    0.959"
    0.995"
    1"
    1" to 1 1/8"
    1" to 1 1/4"
    1" to 1 1/2"
    1.009"
    1.01"
    1.027"
    1.045"
    1.049"
    1.055"
    1.06"
    1.062"
    1 1/16"
    1 1/16" to 1 3/16"
    1.084"
    1.1"
    1.12"
    1.124"
    1 1/8"
    1.134"
    1.135"
    1.140"
    1.152"
    1.155"
    1.158"
    1.18"
    1.185"
    1 3/16"
    1 3/16" to 1 5/16"
    1.188"
    1.209"
    1.215"
    1.245"
    1 1/4"
    1 1/4" to 1 3/8"
    1 1/4" to 1 7/16"
    1 1/4" to 1 11/16"
    1.253"
    1.259"
    1.26"
    1.277"
    1.278"
    1.305"
    1.31"
    1.311"
    1 5/16"
    1.326"
    1.334"
    1.344"
    1.345"
    1.35"
    1.37"
    1.374"
    1 3/8"
    1 3/8" to 1 1/2"
    1.380"
    1.384"
    1.402"
    1.407"
    1.43"
    1.435"
    1 7/16"
    1.442"
    1.459"
    1.495"
    1 1/2"
    1.51"
    1.524"
    1.531"
    1.56"
    1 9/16"
    1 9/16" to 1 11/16"
    1.570"
    1.584"
    1.610"
    1.62"
    1.624"
    1 5/8"
    1 5/8" to 1 11/16"
    1.627"
    1.634"
    1.652"
    1 21/32"
    1 11/16"
    1.745"
    1 3/4"
    1 3/4" to 2 3/16"
    1.76"
    1.770"
    1.81"
    1 13/16" to 2"
    1.834"
    1.87"
    1 7/8"
    1 7/8" to 2 1/8"
    1.902"
    1 29/32"
    1.93"
    1 15/16"
    1.939"
    2"
    2" to 2 3/16"
    2.01"
    2.067"
    2.124"
    2 1/8"
    2.186"
    2 3/16"
    2 1/4"
    2 1/4" to 2 7/16"
    2.26"
    2.31"
    2 5/16"
    2 5/16" to 2 1/2"
    2.323"
    2.37"
    2 3/8"
    2.407"
    2.469"
    2 1/2"
    2 5/8"
    2 5/8" to 3"
    2.657"
    2 3/4"
    2 3/4" to 3 1/8"
    2.76"
    2.870"
    2 7/8"
    2.900"
    2.907"
    2 15/16"
    3"
    3.068"
    3 1/8"
    3 1/8" to 3 1/2"
    3 1/8" to 3 5/8"
    3.157"
    3 1/4"
    3.26"
    3 3/8"
    3 7/16"
    3 1/2"
    3 9/16"
    3.624"
    3 5/8"
    3 3/4"
    3.760"
    3.87"
    3 7/8"
    3 15/16"
    4"
    4" to 4 1/2"
    4 1/8"
    4 1/4"
    4.26"
    4 5/16"
    4 3/8"
    4 7/16"
    4 7/16" to 5"
    4 1/2"
    4.624"
    4 5/8"
    4 3/4"
    4 7/8"
    4 15/16"
    5"
    5 1/8"
    5 1/4"
    5 3/8"
    5 1/2"
    5 9/16"
    5 5/8"
    5 3/4"
    6"
    6 1/8"
    6 1/4"
    6 5/16"
    6 1/2"
    6 5/8"
    6 3/4"
    7"
    7 1/4"
    7 1/2"
    7 5/8"
    7 3/4"
    7 7/8"
    8"
    8 1/8"
    8 5/8"
    9"
    9 1/2"
    9 3/4"
    10"
    10 1/4"
    10 3/4"
    11 1/2"
    11 3/4"
    12 3/4"
    13"
    14"
    14 1/8"
    15"
    16"
    17"
    18"
    19"
    20"
    24"
    1mm
    1.1mm
    2mm
    2.1mm
    3 mm
    3.1mm
    4mm
    4.1mm
    5 mm
    5 to 6 mm
    5.1mm
    6 mm
    6 to 8 mm
    6.1mm
    6.4 mm
    7mm
    7.1mm
    8 mm
    8 to 10 mm
    8.1mm
    9 mm
    9.1mm
    10 mm
    10 to 12 mm
    10 to 13 mm
    10 to 17 mm
    11 mm
    12 mm
    12 to 14 mm
    12 to 16 mm
    12.550mm
    13.0 mm
    13 to 16 mm
    14 mm
    14 to 19 mm
    15.0 mm
    15 to 17 mm
    16 mm
    16 to 19 mm
    16 to 22 mm
    16.700mm
    17 mm
    17 to 20 mm
    18mm
    19 mm
    19 to 22 mm
    19 to 29 mm
    20 mm
    20 to 22 mm
    20.950mm
    21 mm
    21 to 24 mm
    21 to 25 mm
    22 mm
    22 to 23 mm
    22 to 25 mm
    22 to 168 mm
    23.0 mm
    24 mm
    25.0 mm
    25 to 28 mm
    25 to 29 mm
    25 to 32 mm
    25 to 38 mm
    25.100mm
    25.4 mm
    26.0 mm
    27 mm
    28.0 mm
    28 to 31 mm
    28.350mm
    29 mm
    30 mm
    30 to 34 mm
    31.0 mm
    31.400mm
    32 mm
    32 to 36 mm
    32 to 37 mm
    32 to 43 mm
    33 mm
    34 mm
    35 mm
    36 to 40 mm
    37.0 mm
    37.700mm
    38 mm
    40 mm
    40 to 43 mm
    40 to 44 mm
    41 mm
    42 mm
    43 mm
    44 mm
    44 to 56 mm
    44.600mm
    46mm
    47 mm
    47 to 51 mm
    48 mm
    48 to 54 mm
    49 mm
    50 mm
    51 mm
    51 to 56 mm
    53 mm
    54 mm
    55 mm
    56 mm
    56 to 63 mm
    57 mm
    58 mm
    59 to 64 mm
    60 mm
    61 mm
    63 mm
    64 mm
    66 mm
    66 to 76 mm
    67 mm
    70 mm
    71 to 80 mm
    73 mm
    75 mm
    76 mm
    79 mm
    79 to 93 mm
    80 to 90 mm
    86 mm
    87 mm
    88 mm
    89 mm
    90 mm
    92 mm
    98 mm
    100 mm
    101 to 115 mm
    102 mm
    104 mm
    105 mm
    110 mm
    112 mm
    113 to 127 mm
    114 mm
    125 mm
    127 mm
    130 mm
    141 mm
    152 mm
    155 mm
    156 mm
    160 mm
    168 mm
    193 mm
    194 mm
    203 mm
    206 mm
    219 mm
    254 mm
    273 mm
    324 mm
    330 mm
    355 mm
    356 mm
    359 mm
    381 mm
    406 mm
    431 mm
    457 mm
    482 mm
    508 mm
    610 mm
    REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)
    REACH (Registration,
    Evaluation, Authorization
    and Restriction of Chemicals)
    REACH Compliant
    Rail Construction
    Rail Construction
    Solid
    Hollow
    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)
    12,823 Products
    Building and Machinery Hardware
    Raw Materials
    Material Handling
    Fabricating and Machining
    Fastening and Joining
    Containers, Storage, and Furniture
    Safety Equipment
    Measuring and Inspecting
    Electrical
    Facility and Grounds Maintenance