System of Measurement
    System of Measurement
    Inch
    Metric
    Rail Profile
    Rail Profile
    Single
    Double
    Quad
    Triple
    C
    Double C
    S
    Length
    Length
    1/8"
    5/8"
    23/32"
    3/4"
    7/8"
    15/16"
    1"
    1" to 242"
    1 1/8"
    1 7/32"
    1 1/4"
    1 3/8"
    1 27/64"
    1 7/16"
    1 1/2"
    1 39/64"
    1 5/8"
    1 3/4"
    1 13/16"
    1 27/32"
    1 7/8"
    2"
    2" to 144"
    2" to 220"
    2" to 236"
    2" to 240"
    2 1/16"
    2 1/8"
    2 1/4"
    2 3/8"
    2 1/2"
    2 9/16"
    2 13/16"
    2 15/16"
    3"
    3 1/8"
    3 1/4"
    3.34"
    3.36"
    3 3/8"
    3 25/64"
    3 1/2"
    3.55"
    3 5/8"
    3.63"
    3 15/16"
    4"
    4 1/16"
    4.08"
    4.16"
    4 1/4"
    4 7/16"
    4.47"
    4 1/2"
    4 5/8"
    4 3/4"
    4 7/8"
    5"
    5 1/8"
    5 3/16"
    5 1/4"
    5 3/8"
    5.41"
    5 1/2"
    5.6"
    5.74"
    5 7/8"
    6"
    6 1/8"
    6 1/4"
    6.41"
    6.72"
    6.74"
    6 7/8"
    6.88"
    6.94"
    7"
    7 1/8"
    7.16"
    7 1/4"
    7 3/8"
    7.41"
    7 1/2"
    7 9/16"
    7 7/8"
    7.98"
    8"
    8.41"
    8 1/2"
    8.6"
    8.72"
    8.73"
    8.74"
    8 7/8"
    8.88"
    8.98"
    9"
    9.31"
    9.41"
    9 5/8"
    9 13/16"
    9.88"
    9.98"
    10"
    10.16"
    10 1/4"
    10.41"
    10.44"
    10 1/2"
    10.56"
    10 13/16"
    10.88"
    10.98"
    11.41"
    11.44"
    11 1/2"
    11.6"
    11.72"
    11.73"
    11.74"
    11 13/16"
    11.88"
    11.98"
    1 ft.
    12.41"
    12.44"
    12 1/2"
    12 3/4"
    12.82"
    12.88"
    12.98"
    13.16"
    13.41"
    13.44"
    13 5/8"
    13 3/4"
    13.82"
    13.88"
    13.98"
    14.41"
    14.44"
    14 1/2"
    14.6"
    14 5/8"
    14.72"
    14.73"
    14.82"
    14.88"
    14.98"
    15"
    15.18"
    15.41"
    15.44"
    15 3/4"
    15.82"
    15.88"
    15.98"
    16.18"
    16.41"
    16.44"
    16 1/2"
    16.82"
    16.88"
    16.98"
    17.18"
    17.41"
    17.44"
    17 5/8"
    17 11/16"
    17.72"
    17.73"
    17.82"
    17.88"
    17.92"
    17.98"
    18"
    18.18"
    18.41"
    18.44"
    18.82"
    18.88"
    18.92"
    18.98"
    19.18"
    19.41"
    19.44"
    19 11/16"
    19.82"
    19.88"
    19.92"
    19.98"
    20.18"
    20.41"
    20.44"
    20.73"
    20.82"
    20.88"
    20.92"
    20.98"
    21.18"
    21.41"
    21.44"
    21 5/8"
    21 11/16"
    21.82"
    21.88"
    21.92"
    21.98"
    22.18"
    22.41"
    22.44"
    22.82"
    22.88"
    22.92"
    22.98"
    23.18"
    23.41"
    23.44"
    23 5/8"
    23.82"
    23.88"
    23.92"
    23.98"
    2 ft.
    24.18"
    24.41"
    24.44"
    24.82"
    24.88"
    24.92"
    24.98"
    25.18"
    25.41"
    25.44"
    25.82"
    25.88"
    25.92"
    25.98"
    26.18"
    26.41"
    26.44"
    26.73"
    26.82"
    26.88"
    26.92"
    26.98"
    27.18"
    27.41"
    27.44"
    27.82"
    27.88"
    27.92"
    27.98"
    28.18"
    28.41"
    28.44"
    28.82"
    28.88"
    28.92"
    28.98"
    29.18"
    29.41"
    29.44"
    29.82"
    29.88"
    29.92"
    29.98"
    30.18"
    30.41"
    30.44"
    30.82"
    30.88"
    30.92"
    30.98"
    31.18"
    31.41"
    31.44"
    31.82"
    31.88"
    31.92"
    31.98"
    32.18"
    32.41"
    32.44"
    32.82"
    32.88"
    32.92"
    32.98"
    33.18"
    33.41"
    33.44"
    33.82"
    33.88"
    33.92"
    33.98"
    34.18"
    34.41"
    34.44"
    34.82"
    34.88"
    34.92"
    34.98"
    35.18"
    35.41"
    35.44"
    35.82"
    35.88"
    35.92"
    35.98"
    3 ft.
    36.18"
    36.41"
    36.44"
    36.82"
    36.88"
    36.92"
    36.98"
    37.18"
    37.41"
    37.44"
    37.82"
    37.88"
    37.92"
    37.98"
    3'2"
    38.18"
    38.41"
    38.44"
    38.82"
    38.88"
    38.92"
    38.98"
    3'3"
    3 1/4ft.
    39.18"
    39.41"
    39.44"
    39.82"
    39.88"
    39.92"
    39.98"
    40.18"
    40.41"
    40.44"
    40.82"
    40.88"
    40.92"
    40.98"
    41.18"
    41.44"
    41.82"
    41.88"
    41.92"
    41.98"
    42.18"
    42.44"
    42.82"
    42.88"
    42.92"
    43.18"
    43.44"
    43.82"
    43.88"
    43.92"
    44.18"
    44.44"
    44.82"
    44.88"
    44.92"
    45.18"
    45.44"
    45.82"
    45.88"
    45.92"
    46.18"
    46.44"
    46.82"
    46.88"
    46.92"
    47.18"
    47.44"
    47.82"
    47.88"
    47.92"
    4 ft.
    48.18"
    48.44"
    48.82"
    48.88"
    48.92"
    49.18"
    49.44"
    49.82"
    49.88"
    49.92"
    50.18"
    50.44"
    50.82"
    50.88"
    50.92"
    51.18"
    51.44"
    51.82"
    51.88"
    51.92"
    52.18"
    52.44"
    52.82"
    52.88"
    52.92"
    53.18"
    53.44"
    53.82"
    53.88"
    53.92"
    54"
    54.18"
    54.44"
    54.82"
    54.88"
    54.92"
    55.18"
    55.44"
    55.82"
    55.88"
    55.92"
    56.18"
    56.44"
    56.82"
    56.92"
    4'9"
    57.18"
    57.44"
    57 5/8"
    57.82"
    57.92"
    58.18"
    58.82"
    58.92"
    59.18"
    59.82"
    59.92"
    5 ft.
    60.18"
    60.92"
    61.18"
    61.92"
    62.18"
    62.92"
    63.92"
    64.92"
    67.88"
    69.44"
    71.82"
    6 ft.
    74.18"
    6'3"
    76.92"
    6 1/2ft.
    6'7"
    79.88"
    81.44"
    83.82"
    7 ft.
    86.18"
    88.92"
    8 ft.
    9ft.
    9'10"
    10 ft.
    12ft.
    16 ft.
    20 ft.
    12.7mm
    27 mm
    30mm
    43 mm
    57.9mm
    66 mm
    71 mm
    75mm
    80mm
    82.6mm
    88.9mm
    92.3mm
    95.3mm
    133.4mm
    145.7mm
    149.4mm
    160mm
    171.5mm
    184.2mm
    187.9 mm
    188.4 mm
    197 mm
    247 mm
    250 mm
    256 mm
    260.4mm
    272 mm
    285.8mm
    336.6 mm
    340.2 mm
    347 mm
    350 mm
    356 mm
    372 mm
    450 mm
    456 mm
    489 mm
    492.6 mm
    572 mm
    1m
    1,245mm
    1,550mm
    1,855mm
    2m
    2,160mm
    2,337mm
    DFARS (Defense Acquisition Regulations Supplement)
    DFARS (Defense Acquisition
    Regulations Supplement)
    RoHS (Restriction of Hazardous Substances)
    RoHS (Restriction of
    Hazardous Substances)
    RoHS Compliant
    RoHS Compliant with
    Exemptions
    Mounting Fastener Thread Size
    Mounting Fastener
    Thread Size
    6-32
    10-32
    No. 12
    1/4"-20
    5/16"-18
    M3
    M4
    M5
    M6
    M7
    M8
    M12
    REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)
    REACH (Registration,
    Evaluation, Authorization
    and Restriction of Chemicals)
    REACH Compliant
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