McMaster-Carr logo
    Filter by
    System of Measurement
    Screw Size
    Industrial Info Snippet
    Base Length
    Overall Height
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Mounting Hole Center-to-Center
    Number of Mounting Holes
    Pattern
    Base Thickness
    Base Width
    Column Height
    Column Length
    Column Width
    Thread Size
    Industrial Info Snippet
    Flange Thickness
    Application
    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)
    19 Products

    Fixture Columns

    Clamp multiple parts or fixtures to these columns to speed up your machining process. Also known as tombstones, they have multiple faces for building dense, efficient setups. Each face is precision-machined for accurate positioning. Made from cast iron, these columns are rigid enough to limit vibration and stabilize your workpieces during machining.
    Blank
    Image of Attribute. Front orientation. Contains Annotated. Fixture Columns, Blank, Square.
    Image of Attribute. Front orientation. Contains Annotated. Fixture Columns, Blank, Rectangle.
    Image of Attribute. Front orientation. Contains Annotated. Fixture Columns, Blank, Cross.

    Square

    Rectangle

    Cross

    Blank columns can be customized to fit your application. Machine them with your own holes, T-slots, or other mounting surfaces.
    Square—Square columns have four equal faces for balanced machining on each side.
    Rectangle—Rectangle columns have two wide faces for larger setups and two narrow faces for smaller ones. The narrow faces can also help reduce tool interference.
    Cross—Cross columns have four equal faces, similar to square columns, but cutouts at each corner give you more tool clearance.
    Column
    Base
    Mounting Holes
    Tolerance
    Lg.
    Wd.
    Ht.
    Overall
    Ht.
    Lg.
    Wd.
    Thk.
    No.
    of
    Style
    Ctr.-to-Ctr.
    For Mounting
    Screw Size
    Wt.,
    lb.
    Squareness
    Parallel
    Flatness
    Material
    Each
    Square
    8"8"22"22 1/2"15 3/4"15 3/4"1 1/2"8Slotted6"5/8"
    		3650.0008"0.0005"0.0005"Cast Iron9990N111000000000
    10"10"26"28"19 3/4"19 3/4"2"8Slotted8"5/8"
    		6150.0008"0.0005"0.0005"Cast Iron9990N11300000000
     
    Rectangle
    15 3/4"4"26"28"15 3/4"15 3/4"2"6Slotted6"5/8"
    		5400.0008"0.0005"0.0005"Cast Iron9990N11500000000
    19 3/4"4"26"28"19 3/4"19 3/4"2"6Slotted8"5/8"
    		7150.0008"0.0005"0.0005"Cast Iron9990N11700000000
     
    Cross
    10"10"26 1/2"28"15 3/4"15 3/4"1 1/2"8Slotted6"5/8"
    		5450.0008"0.0005"0.0005"Cast Iron9990N11900000000
     
    Grid
    Image of Attribute. Front orientation. Contains Annotated. Fixture Columns, Grid, Square.
    Image of Attribute. Front orientation. Contains Annotated. Fixture Columns, Grid, Rectangle.
    Image of Attribute. Front orientation. Contains Annotated. Fixture Columns, Grid, Cross.

    Square

    Rectangle

    Cross

    Grid columns have industry-standard hole patterns. The holes are lined with a precision bushing and a threaded insert to help locate fasteners, so you can clamp parts accurately and securely. Both are hardened to resist wear. These columns also come with a plastic chip plug for each hole—plug unused holes to keep debris from clogging them or causing damage.
    Square—Square columns have four equal faces for balanced machining on each side.
    Rectangle—Rectangle columns have two wide faces for larger setups and two narrow faces for smaller ones. The narrow faces can also help reduce tool interference.
    Cross—Cross columns have four equal faces, similar to square columns, but cutouts at each corner give you more tool clearance.
    Columns
    Aluminum
    Chip Plugs
    Replacement
    Plastic Chip Plugs
    Column
    Base
    Holes
    Mounting Holes
    Tolerance
    Lg.
    Wd.
    Ht.
    Overall
    Ht.
    Lg.
    Wd.
    Thk.
    No.
    of
    Thread
    Size
    Ctr.-to-Ctr.
    No.
    of
    Style
    Ctr.-to-Ctr.
    For Mounting
    Screw Size
    Wt.,
    lb.
    Squareness
    Parallel
    Flatness
    Material
    Each
    Each
    Each
    Square
    8"8"22"22 1/2"15 3/4"15 3/4"1 1/2"1321/2"-13
    		2"8Slotted6"5/8"
    		3550.0008"0.0005"0.0005"Cast Iron9990N1120000000003161N12000003161N1300000
    10"10"26"28"19 3/4"19 3/4"2"2081/2"-13
    		2"8Slotted8"5/8"
    		6000.0008"0.0005"0.0005"Cast Iron9990N114000000003161N1200003161N130000
     
    Rectangle
    15 3/4"4"26"28"15 3/4"15 3/4"2"2081/2"-13
    		2"6Slotted6"5/8"
    		5250.0008"0.0005"0.0005"Cast Iron9990N116000000003161N1200003161N130000
    19 3/4"4"26"28"19 3/4"19 3/4"2"2601/2"-13
    		2"6Slotted8"5/8"
    		6950.0008"0.0005"0.0005"Cast Iron9990N118000000003161N1200003161N130000
     
    Cross
    10"10"26 1/2"28"15 3/4"15 3/4"1 1/2"1561/2"-13
    		2"8Slotted6"5/8"
    		5350.0008"0.0005"0.0005"Cast Iron9990N121000000003161N1200003161N130000
     

    Welding Fixture Squares

    Image of ProductInUse. Front orientation. Contains Annotated. Fixture Squares. Welding Fixture Squares.
    Image of Product. 2 Axes With Leveling Tabs. Front orientation. Fixture Squares. Welding Fixture Squares, 2 Axes with Leveling Tabs.
    Image of Product. 2 Axes with Joint Access Cutouts and Leveling Tabs. Front orientation. Fixture Squares. Welding Fixture Squares, 2 Axes with Joint Access Cutouts and Leveling Tabs.
    Image of Product. Front orientation. Fixture Squares. Welding Fixture Squares, 3 Axes.

    2 Axes With Leveling Tabs

    2 Axes with Joint

    Access Cutouts and

    Leveling Tabs

    3 Axes

    Position your workpieces at the correct angle prior to welding. These squares have an extra-wide head, so you can clamp them in place.
    Joint Access Cutouts—Squares with joint access cutouts make it easier to reach joints, such as when welding and gluing.
    Leveling Tabs—Leveling tabs are for aligning workpieces with one another.
    Cast Iron—Cast iron squares are durable and difficult to dent or scratch. They resist weld spatter, but they’re more likely to corrode than aluminum.
    Overall
    Cast Iron
    Holding
    Angle
    Lg.
    Wd.
    Ht.
    Flange
    Thk.
    Each
    2 Axes with Leveling Tabs
    45°, 90°4"4"1 1/2"1/4"4984N42000000
    45°, 90°6"6"1 1/2"1/4"4984N4300000
    45°, 90°12"12"3"1/4"4984N46000000
     
    2 Axes with Joint Access Cutouts and Leveling Tabs
    45°, 90°4"4"1 1/2"1/4"4984N2200000
    45°, 90°6"6"1 1/2"1/4"4984N2300000
    45°, 90°12"12"3"3/8"4984N26000000
     
    3 Axes
    90°10 1/2"10 1/2"8"1"4984N101000000
     
    back to top