McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    59 Products

    Precision Alignment Pins

    Precisely align drilled holes in two parts.
    L-Shaped-Style Alignment Pins
    Image of Product. Front orientation. Contains Annotated. Alignment Pins. Precision Alignment Pins, L-Shaped-Style Alignment Pins.
    Handle
    Pin
    Dia.
    Lg.
    Dia.
    Lg.
    Pin Dia.
    Tolerance
    Hardness
    Each
    Steel
    1/8"2 1/2"1/4"1 1/2"-0.0005" to 0"Rockwell C5800000000000000
    5/32"3 1/2"5/16"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    3/16"2 1/2"5/16"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    3/16"3"5/16"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    3/16"4"5/16"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    3/16"6"5/16"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    0.1895"2 1/2"5/16"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    0.191"3"5/16"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    0.1925"3"5/16"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    0.196"3"5/16"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    0.2485"5"3/8"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    1/4"3"3/8"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    1/4"4"3/8"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    1/4"6"3/8"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    0.257"3"3/8"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    0.275"4"3/8"2 1/2"-0.0005" to 0"Rockwell C580000000000000
    5/16"2"7/16"3"-0.0005" to 0"Rockwell C580000000000000
    5/16"3 1/2"7/16"3"-0.0005" to 0"Rockwell C580000000000000
    5/16"4"7/16"3"-0.0005" to 0"Rockwell C580000000000000
    5/16"6"7/16"3"-0.0005" to 0"Rockwell C580000000000000
    3/8"3"1/2"3 1/2"-0.0005" to 0"Rockwell C580000000000000
    3/8"4"1/2"3 1/2"-0.0005" to 0"Rockwell C580000000000000
    3/8"6"1/2"3 1/2"-0.0005" to 0"Rockwell C580000000000000
    7/16"4"9/16"3 1/2"-0.0005" to 0"Rockwell C580000000000000
    7/16"6"9/16"3 1/2"-0.0005" to 0"Rockwell C580000000000000
    1/2"4"5/8"3 1/2"-0.0005" to 0"Rockwell C580000000000000
    1/2"6"5/8"3 1/2"-0.0005" to 0"Rockwell C5800000000000000
    1/2"9"5/8"3 1/2"-0.0005" to 0"Rockwell C5800000000000000
    9/16"4"5/8"3 1/2"-0.0005" to 0"Rockwell C5800000000000000
    9/16"6"5/8"3 1/2"-0.0005" to 0"Rockwell C5800000000000000
    5/8"6"7/8"3 1/2"-0.0005" to 0"Rockwell C5800000000000000
    5/8"8"7/8"3 1/2"-0.0005" to 0"Rockwell C5800000000000000
    3/4"6"7/8"3 1/2"-0.0005" to 0"Rockwell C5800000000000000
    3/4"8"7/8"3 1/2"-0.0005" to 0"Rockwell C5800000000000000
    4 mm88 mm8 mm64 mm-0.0005 mm to 0 mmRockwell C4000000000000
    5 mm76 mm8 mm64 mm-0.0005 mm to 0 mmRockwell C4000000000000
    5 mm152 mm8 mm64 mm-0.0005 mm to 0 mmRockwell C4000000000000
    6 mm76 mm10 mm64 mm-0.0005 mm to 0 mmRockwell C4000000000000
    6 mm152 mm10 mm64 mm-0.0005 mm to 0 mmRockwell C4000000000000
    8 mm88 mm11 mm76 mm-0.0005 mm to 0 mmRockwell C4000000000000
    8 mm152 mm11 mm76 mm-0.0005 mm to 0 mmRockwell C40000000000000
    10 mm76 mm13 mm64 mm-0.0005 mm to 0 mmRockwell C4000000000000
    10 mm152 mm13 mm88 mm-0.0005 mm to 0 mmRockwell C40000000000000
    12 mm102 mm16 mm88 mm-0.0005 mm to 0 mmRockwell C40000000000000
    12 mm152 mm16 mm88 mm-0.0005 mm to 0 mmRockwell C40000000000000
    16 mm152 mm22 mm88 mm-0.0005 mm to 0 mmRockwell C40000000000000
    16 mm204 mm22 mm88 mm-0.0005 mm to 0 mmRockwell C40000000000000
    20 mm152 mm22 mm88 mm-0.0005 mm to 0 mmRockwell C40000000000000
    20 mm204 mm22 mm88 mm-0.0005 mm to 0 mmRockwell C40000000000000
     

    Slotted Bushings

    Image of ProductInUse. Front orientation. Contains Annotated, Inset, MultipleImages. Slotted Bushings.
    Image of Product. Front orientation. Contains Annotated. Slotted Bushings.
    When locating a workpiece using through-hole alignment pins (sold separately), use one of these bushings and one standard bushing to prevent the pins from binding in your fixture. One pin sits in the standard drill bushing for tight-tolerance locating in all directions, and the other pin sits in the slotted bushing for tight-tolerance locating in only one direction. This functionality is similar to the combination of round and diamond-head locating pins. Press these bushings into a drilled hole for permanent installation. They’re also known as slotted locator bushings.
    Slot
    Tolerance
    For Pin
    Dia.
    Ht.
    Wd.
    Lg.
    OD
    Slot Ht.
    OD
    Hardness
    Material
    Each
    1/8"1/8"1/4"1/2"3/8"0.0001" to 0.0007"0.0001" to 0.0004"Rockwell C58Black-Oxide Steel0000000000000
    3/16"3/16"3/8"1/2"1/2"0.0001" to 0.0007"0.0001" to 0.0004"Rockwell C58Black-Oxide Steel000000000000
    0.1925"0.1935"3/8"1/2"1/2"0.0001" to 0.0006"0.0001" to 0.0004"Rockwell C58Black-Oxide Steel000000000000
    1/4"1/4"3/8"1/2"3/4"0.0001" to 0.0007"0.0001" to 0.0004"Rockwell C58Black-Oxide Steel000000000000
    0.257"0.257"3/8"1/2"3/4"0.0001" to 0.0007"0.0001" to 0.0004"Rockwell C58Black-Oxide Steel000000000000
    5/16"5/16"7/16"1/2"3/4"0.0001" to 0.0007"0.0001" to 0.0004"Rockwell C58Black-Oxide Steel000000000000
    3/8"3/8"1/2"1/2"1"0.0001" to 0.0007"0.0001" to 0.0004"Rockwell C58Black-Oxide Steel000000000000
    1/2"1/2"5/8"1/2"1"0.0001" to 0.0007"0.0001" to 0.0004"Rockwell C58Black-Oxide Steel000000000000
    5/8"5/8"3/4"1"1 1/4"0.0001" to 0.0007"0.0001" to 0.0004"Rockwell C58Black-Oxide Steel000000000000
    3/4"3/4"7/8"1"1 1/2"0.0001" to 0.001"0.0001" to 0.0004"Rockwell C58Black-Oxide Steel000000000000
    back to top