McMaster-Carr logo
    Filter by
    Mounting Hole Center-to-Center
    Screw Size
    Industrial Info Compare
    Inner Rail Width
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Industrial Info Compare
    Outer Rail Width
    Inner Rail Height
    Outer Rail Height
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    28 Products

    Steel Bolt-Together Framing and Fittings

    Rails are drilled with consistently spaced holes for multiple mounting options that do not require machining. Use this bolt-together framing to build guards, tables, and racks.
    Square Rails
    Image of Product. Front orientation. Square Rail. Steel Bolt-Together Framing and Fittings .
    Rails have bolt holes on all four sides. Connect multiple rails with brackets or slide one length of rail into the next larger size and bolt together using curved-bolt or locking-pin connectors. Select connectors based on the larger size rail in the connection.
    Zinc-Plated Steel—Zinc-plated steel rails resist corrosion better in wet environments than plain steel rails.
    Galvanized Steel—Galvanized steel rails resist corrosion better in wet environments than zinc-plated steel rails.
    Steel—Steel rails are lightly oiled.
    Rail
    Ht.
    Wd.
    Wall
    Thk.
    Mounting Hole
    Ctr.-to-Ctr.
    For Screw
    Size
    3 ft.
    Long
    4 ft.
    Long
    6 ft.
    Long
    8 ft.
    Long
    12 ft.
    Long
    Zinc-Plated Steel
    1"1"0.083"1"5/16"
    6535K212000000000000000000
    1"1"0.105"1"5/16"
    6535K312000000000000000
    1 1/4"1 1/4"0.083"1"5/16"
    6535K232000000000000000
    1 1/4"1 1/4"0.105"1"5/16"
    6535K332000000000000000
    1 1/2"1 1/2"0.083"1"7/16"
    6535K252000000000000000
    1 1/2"1 1/2"0.105"1"7/16"
    6535K352000000000000000
     
    Galvanized Steel
    1 1/2"1 1/2"0.105"1"7/16"
    4931T1710000000000000000000
    1 5/8"1 5/8"0.105"1 7/8"9/16"
    4931T18700000000000000000
    1 3/4"1 3/4"0.105"1"7/16"
    6535K3720000000000000000000000000000
    1 7/8"1 7/8"0.105"1 7/8"9/16"
    4931T18800000000000000000
    2"2"0.105"1"7/16"
    6535K39200000000000000000000000000000
    2 1/4"2 1/4"0.105"1"7/16"
    6535K41200000000000000000000000000000
    2 1/2"2 1/2"0.105"1"7/16"
    6535K43200000000000000000000000000000
     
    Steel
    1 1/2"1 1/2"0.106"1"7/16"
    4931T8270000000000000000000000
    1 3/4"1 3/4"0.106"1"7/16"
    4931T8330000000000000000000000
    2"2"0.106"1"7/16"
    4931T83800000000000000000000000
    2 1/4"2 1/4"0.106"1"7/16"
    4931T84400000000000000000000000
    2 1/2"2 1/2"0.106"1"7/16"
    4931T84900000000000000000000000
     
    Square Telescoping Rails
    Image of Product. Front orientation. Bolt-Together Framing and Fittings. Steel Bolt-Together Framing and Fittings , Telescoping Rail, Rails.
    Telescoping rail sets include two rails that can be nested and locked together.
    Galvanized Steel—Galvanized steel rails resist corrosion better in wet environments than zinc-plated steel rails.
    Rail
    Outer
    Ht.
    Outer
    Wd.
    Inner
    Ht.
    Inner
    Wd.
    Wall
    Thk.
    Mounting Hole
    Ctr.-to-Ctr.
    Mounting Fasteners
    Included
    For Screw
    Size
    Includes
    4 ft.
    Long
    6 ft.
    Long
    8 ft.
    Long
    Galvanized Steel
    1 3/4"1 3/4"1 1/2"1 1/2"0.105"1"Yes7/16"
    Locking Pin, Two Nestable Rails4931T515000000000000000000000
    2"2"1 3/4"1 3/4"0.105"1"Yes7/16"
    Locking Pin, Two Nestable Rails4931T525000000000000000000
    2 1/4"2 1/4"2"2"0.105"1"Yes7/16"
    Locking Pin, Two Nestable Rails4931T535000000000000000000
    2 1/2"2 1/2"2 1/4"2 1/4"0.105"1"Yes7/16"
    Locking Pin, Two Nestable Rails4931T545000000000000000000
     

    Aluminum Bolt-Together Framing and Fittings

    Half the weight of steel, this aluminum framing resists corrosion in wet environments. Rails are drilled with consistently spaced holes for multiple mounting options that do not require machining. Use this bolt-together framing to build guards, tables, and racks.
    Square Rails
    Image of Product. Front orientation. Anodized Aluminum. Aluminum Bolt-Together Framing and Fittings , Square Rail.
    Rails have bolt holes on all sides. Connect multiple rails with brackets and concealed brackets.
    Anodized Aluminum—Anodized aluminum rails resist wear and corrosion better than unfinished aluminum rails.
    Rail
    Mounting Hole
    Ht.
    Wd.
    Wall
    Thk.
    Material
    Ctr.-to-Ctr.
    Ctr.-to-End
    For Screw
    Size
    2 ft.
    Long
    4 ft.
    Long
    6 ft.
    Long
    8 ft.
    Long
    10 ft.
    Long
    1 1/2"1 1/2"0.125"Anodized Aluminum1 1/2"3/4"5/16"
    8809T7000000000000000000000000000000
    1 3/4"1 3/4"0.125"Anodized Aluminum1 1/2"3/4"5/16"
    8809T101000000000000000000000000000000
    2"2"0.125"Anodized Aluminum1 1/2"3/4"5/16"
    8809T102000000000000000000000000000000
    Square Telescoping Rails
    Image of ProductInUse. Two Square Rails Shown Telescoping (Sold Separately). Front orientation. Telescoping Rail. Aluminum Bolt-Together Framing and Fittings .
    Image of Product. Front orientation. Telescoping Rail. Aluminum Bolt-Together Framing and Fittings .

    Two Square Rails Shown

    Telescoping (Sold Separately)

    Telescoping rails fit together by sliding one rail into the next larger size. Secure them with a locking pin (sold separately).
    Rail
    Mounting Hole
    Ht.
    Wd.
    Wall
    Thk.
    Material
    Ctr.-to-Ctr.
    Ctr.-to-End
    For Screw
    Size
    2 ft.
    Long
    4 ft.
    Long
    6 ft.
    Long
    8 ft.
    Long
    1 1/2"1 1/2"0.110"Aluminum1 1/2"3/4"5/16"
    8809T10600000000000000000000000000
    1 3/4"1 3/4"0.110"Aluminum1 1/2"3/4"5/16"
    8809T10400000000000000000000000
    2"2"0.110"Aluminum1 1/2"3/4"5/16"
    8809T10500000000000000000000000
    back to top