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    System of Measurement
    System of Measurement
    Inch
    Metric
    Rail Profile
    Rail Profile
    Single
    Double
    Quad
    Triple
    C
    Double C
    Length
    Length
    1/8"
    1/2"
    5/8"
    11/16"
    23/32"
    3/4"
    51/64"
    7/8"
    15/16"
    1"
    1 1/16"
    1 1/8"
    1 3/16"
    1 7/32"
    1 1/4"
    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 3/4"
    1 49/64"
    1 13/16"
    1 27/32"
    1 7/8"
    2"
    2 1/16"
    2 1/8"
    2 1/4"
    2 5/16"
    2 3/8"
    2 1/2"
    2 9/16"
    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 1/4"
    3.34"
    3.36"
    3 3/8"
    3 25/64"
    3 7/16"
    3 1/2"
    3.55"
    3 9/16"
    3 5/8"
    3.63"
    3 15/16"
    4"
    4 1/16"
    4.08"
    4 1/8"
    4.16"
    4 3/16"
    4 1/4"
    4 3/8"
    4 7/16"
    4.47"
    4 1/2"
    4 5/8"
    4 11/16"
    4 3/4"
    4 7/8"
    5"
    5 1/8"
    5 3/16"
    5 1/4"
    5 5/16"
    5 3/8"
    5.41"
    5 1/2"
    5.6"
    5 5/8"
    5.74"
    5 3/4"
    5 7/8"
    5.88"
    6"
    6 1/8"
    6 1/4"
    6 5/16"
    6 3/8"
    6.41"
    6 5/8"
    6 11/16"
    6.72"
    6.74"
    6 7/8"
    6.88"
    6.94"
    7"
    7 1/8"
    7.16"
    7 3/16"
    7 1/4"
    7 3/8"
    7.41"
    7 1/2"
    7 9/16"
    7 7/8"
    7.98"
    8"
    8 1/4"
    8.41"
    8 7/16"
    8 1/2"
    8.6"
    8 11/16"
    8.72"
    8.73"
    8.74"
    8 3/4"
    8 7/8"
    8.88"
    8.98"
    9"
    9" to 15"
    9.31"
    9.41"
    9 7/16"
    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"
    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 3/8"
    13.41"
    13.44"
    13 5/8"
    13 3/4"
    13.82"
    13.88"
    13.98"
    14"
    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 3/4"
    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"
    1'6"
    18 1/8"
    18.18"
    18.41"
    18.44"
    18 3/4"
    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" to 28"
    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 3/16"
    25.41"
    25.44"
    25.82"
    25.88"
    25.92"
    25.98"
    2'2"
    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"
    2 1/2 ft.
    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 1/4"
    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"
    3'1 1/2"
    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 1/4ft.
    3'3"
    39.18"
    39 3/8"
    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"
    3'6"
    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"
    4'2"
    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"
    5'1 1/2"
    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.
    78 3/4"
    6'7"
    79.88"
    81.44"
    83.82"
    7 ft.
    86.18"
    88.92"
    7'6"
    7'6"-10'0"
    8 ft.
    8'1 1/2"
    8'2"
    9ft.
    9 3/4ft.
    9'10"
    10 ft.
    10'1 1/2"
    12ft.
    16 ft.
    20 ft.
    12.7mm
    27 mm
    30mm
    43 mm
    47mm
    57.9mm
    66 mm
    71 mm
    75mm
    80mm
    82.6mm
    88.9mm
    92.3mm
    95.3mm
    100mm
    133.4mm
    145.7mm
    149.4mm
    160mm
    170mm
    171.5mm
    184.2mm
    187.9 mm
    188.4 mm
    220 mm
    260.4mm
    276 mm
    277 mm
    280 mm
    285.8mm
    336.6 mm
    340 mm
    340.2 mm
    376 mm
    377 mm
    380 mm
    460 mm
    476 mm
    477 mm
    480 mm
    489 mm
    492.6 mm
    576 mm
    577 mm
    580 mm
    640 mm
    676 mm
    677 mm
    680 mm
    776 mm
    777 mm
    780 mm
    820 mm
    1m
    1,245mm
    1,550mm
    1,855mm
    2m
    2,160mm
    2,337mm
    Additional Lengths
    5' 1/2"
    7'10 1/2"
    DFARS (Defense Acquisition Regulations Supplement)
    DFARS (Defense Acquisition
    Regulations Supplement)
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    RoHS (Restriction of Hazardous Substances)
    RoHS (Restriction of
    Hazardous Substances)
    RoHS Compliant
    RoHS Compliant with
    Exemptions
    REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)
    REACH (Registration,
    Evaluation, Authorization
    and Restriction of Chemicals)
    REACH Compliant
    Mounting Fastener Thread Size
    Mounting Fastener
    Thread Size
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    Number of Mounting Holes
    Number of Mounting Holes
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    16
    17
    19
    25
    30
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