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

    Scaffold Clamps

    Image of ProductInUse. Front orientation. Scaffold Clamps. Scaffold Clamps, Rigid.
    Image of ProductInUse. Front orientation. Scaffold Clamps. Scaffold Clamps, Swivel.

    Rigid

    Swivel

    Build tube-and-clamp scaffolding and attach supports, such as railings, to frame-style structures. Also known as knuckles. These clamps fit the most common scaffold tube sizes. Made of galvanized steel, they are rust resistant and hold up in outdoor applications.
    Rigid—Rigid clamps create a secure 90° connection between two tubes.
    Swivel—Swivel clamps pivot to connect tubes at any angle.
    Specifications Met—Clamps meet OSHA and Cal/OSHA dimensional and construction standards. Check local, state, and federal codes, including OSHA, for safe set up and operating practices.
    For OD
    Movement
    Inch
    Metric,
    mm
    No. of Through
    Holes
    Material
    Drive Style
    Hex Size,
    mm
    Specs. Met
    Each
    Rigid1 5/8" to 1 7/8"42 to 482Galvanized SteelExternal Hex
    22Cal/OSHA Compliant Title 8 Section 1637, Cal/OSHA Compliant Title 8 Section 1646, OSHA Compliant 29 CFR 1926.4519421N101000000
    Swivel1 5/8" to 1 7/8"42 to 482Galvanized SteelExternal Hex
    22Cal/OSHA Compliant Title 8 Section 1637, Cal/OSHA Compliant Title 8 Section 1646, OSHA Compliant 29 CFR 1926.4519421N10200000

    Galvanized Iron and Steel Slip-On Framing and Fittings

    To provide corrosion resistance in wet environments, this framing is galvanized. Slip the fittings over rails to construct custom railings, guard rails, storage racks, and shelving. Tighten the included set screws for a secure hold.
    Through-Hole Connectors
    Image of ProductInUse. Front orientation. Slip-On Framing and Fittings. Galvanized Iron and Steel Slip-On Framing and Fittings, Through-Hole Connectors, Crossover.
    Image of ProductInUse. Front orientation. Exploded view. Slip-On Framing and Fittings. Galvanized Iron and Steel Slip-On Framing and Fittings, Through-Hole Connectors, Three-Way Crossover.
    Image of ProductInUse. Easy Install Hinged Crossover. Front orientation. Slip-On Framing and Fittings. Galvanized Iron and Steel Slip-On Framing and Fittings, Through-Hole Connectors, Easy Install Crossover, Hinged Slip-On Fitting.
    Image of ProductInUse. Easy Install Wraparound Crossover. Front orientation. Slip-On Framing and Fittings. Galvanized Iron and Steel Slip-On Framing and Fittings, Through-Hole Connectors, Easy Install Crossover, Wraparound Slip-On Fitting.

    Crossover

    Three-Way Crossover

    Easy Install

    Hinged Crossover

    Easy

    Install Wraparound

    Crossover

    Through-hole fittings allow rails to run all the way through.
    Easy Install—Easy install through-hole fittings can be added to existing structures without disassembling.
    Galvanized Iron—Galvanized iron fittings are malleable iron.
    Slip-On Framing
    and Fittings
    Hinged
    Slip-On Fitting
    Wraparound
    Slip-On Fitting
    For Rail
    OD
    For Pipe
    Size
    Lg.
    No. of Through
    Holes
    Material
    Includes
    Each
    Each
    Each
    Crossover
    1"3/4
    1 1/4"2Galvanized IronSet Screws4936T189000000———0———0
    1 3/8"1
    1 1/2"2Galvanized IronSet Screws4936T4700000———0———0
    1 5/8"1 1/4
    1 13/16"2Galvanized IronSet Screws4936T4800000———0———0
    1 7/8"1 1/2
    2"2Galvanized IronSet Screws4936T4900000———0———0
    2 3/8"2
    2 3/8"2Galvanized IronSet Screws4936T8900000———0———0
     
    Three-Way Crossover
    1 5/8"1 1/4
    4 1/16"2Galvanized IronSet Screws4936T14900000———0———0
     
    Easy Install Crossover
    1"3/4
    2Galvanized IronSet Screws———0———04936T191000000
    1 3/8"1
    2Galvanized IronSet Screws———0———04936T2400000
    1 5/8"1 1/4
    2Galvanized IronSet Screws———04936T2160000004936T2500000
    1 7/8"1 1/2
    2Galvanized IronSet Screws———04936T217000004936T2600000
    2 3/8"2
    2Galvanized IronSet Screws———0———04936T7800000
     
    Through-Hole Reducers
    Image of ProductInUse. Front orientation. Slip-On Framing and Fittings. Galvanized Iron and Steel Slip-On Framing and Fittings, Through-Hole Reducers, Crossover.

    Crossover

    Through-hole fittings allow rails to run all the way through.
    Reducers allow transitions from one rail size to another.
    Galvanized Iron—Galvanized iron fittings are malleable iron.
    For
    Rail OD
    For
    Pipe Size
    (A)
    (B)
    (A)
    (B)
    No. of Through
    Holes
    Material
    Includes
    Each
    Crossover
    1 3/8"1"1
    3/4
    2Galvanized IronSet Screws4936T863000000
    1 5/8"1 3/8"1 1/4
    1
    2Galvanized IronSet Screws4936T86900000
    1 7/8"1 5/8"1 1/2
    1 1/4
    2Galvanized IronSet Screws4936T87800000
    2 3/8"1 7/8"2
    1 1/2
    2Galvanized IronSet Screws4936T88200000
     

    Aluminum Slip-On Framing and Fittings

    Half the weight of steel, this aluminum framing resists corrosion in wet environments. Slip the fittings over rails to construct custom railings, guard rails, storage racks, and shelving. Tighten the included set screws for a secure hold.
    Through-Hole Connectors
    Image of ProductInUse. Front orientation. Slip-On Framing and Fittings. Aluminum Slip-On Framing and Fittings, Through-Hole Connectors, Crossover.

    Crossover

    Image of ProductInUse. Easy Install Clamp On Crossover. Front orientation. Slip-On Framing and Fittings. Aluminum Slip-On Framing and Fittings, Through-Hole Connectors, Easy Install Crossover, Clamp-On Slip-On Fitting.

    Easy Install

    Clamp On Crossover

    Through-hole fittings allow rails to run all the way through.
    Easy Install—Easy install through-hole fittings can be added to existing structures without disassembling.
    For Rail
    OD
    For Pipe
    Size
    Lg.
    No. of Through
    Holes
    Includes
    Each
    Crossover
     
    Aluminum
    1"3/4
    1 1/2"2Set Screws4698T42000000
    1"3/4
    2 1/2"2Set Screws4698T6300000
    1 3/8"1
    1 7/8"2Set Screws4698T4300000
    1 3/8"1
    3 1/2"2Set Screws4698T6400000
    1 5/8"1 1/4
    2 1/4"2Set Screws4698T4400000
    1 5/8"1 1/4
    3 1/2"2Set Screws4698T6500000
    1 7/8"1 1/2
    2 1/2"2Set Screws4698T4500000
    1 7/8"1 1/2
    3 1/2"2Set Screws4698T6600000
    2 3/8"2
    4"2Set Screws4698T22600000
     
    Easy Install Crossover
     
    Clamp On Aluminum
    1 3/8"1
    2Set Screws4698T12400000
    1 5/8"1 1/4
    2Set Screws4698T12500000
    1 7/8"1 1/2
    2Set Screws4698T12600000
     
    Through-Hole Reducers
    Image of ProductInUse. Front orientation. Slip-On Framing and Fittings. Aluminum Slip-On Framing and Fittings, Through-Hole Reducers.
    Through-hole fittings allow rails to run all the way through.
    For
    Rail OD
    For
    Pipe Size
    (A)
    (B)
    (A)
    (B)
    No. of Through
    Holes
    Includes
    Each
    Crossover
     
    Aluminum
    1 3/8"1"1
    3/4
    2Set Screws4698T101000000
    1 5/8"1 3/8"1 1/4
    1
    2Set Screws4698T10200000
    1 7/8"1 5/8"1 1/2
    1 1/4
    2Set Screws4698T10300000
    2 3/8"1 7/8"2
    1 1/2
    2Set Screws4698T10400000
     

    Heavy Duty Clamp-On Framing and Fittings

    Build workstations, conveyors, and shelving for heavy loads. These clamp-on framing rails and fittings are the thickest and sturdiest in our offering. The fittings slide over the rails in one piece. Tighten their bolts to clamp them in place—no machining or welding required.
    Through-Hole Connectors for Round Rails
    Image of ProductInUse. Crossover. Front orientation. Crossover. Heavy Duty Clamp-On Framing and Fittings, Connectors, For Round Rails.

    Crossover

    Through-hole fittings allow rails to run all the way through.
    Aluminum—Aluminum fittings resist corrosion in wet environments.
    For Rail
    OD
    Material
    No. of Through
    Holes
    Each
    Crossover
    1/2"Aluminum29578T26000000
    3/4"Aluminum29578T2700000
    1"Aluminum29578T2100000
    1 1/4"Aluminum29578T2200000
    1 1/2"Aluminum29578T2300000
    2"Aluminum29578T2400000
     

    Clamp-On Framing and Fittings

    Image of System. Front orientation. Contains Annotated. Clamp-On Framing and Fittings. Clamp-On Framing and Fittings .
    Fittings come in two pieces to clasp over rails, making assembly and disassembly quicker than our other framing. Use it to form temporary partitions, modular conveyors, and workstations. To assemble, clamp fittings onto the rail and tighten the included cap screw and nut. For permanent connections and added strength, fittings have a 5/32" hole to drill in an additional screw (not included).
    Connectors
    Image of ProductInUse. Front orientation. Clamp-On Framing and Fittings. Clamp-On Framing and Fittings , Connectors, Crossover.

    Crossover

    Through-Hole Mount—Through-hole fittings allow rails to run all the way through.
    Black
    Painted Steel
    Clamp-On Framing
    Component Type
    Mount Type
    For Rail OD
    No. of Through
    Holes
    Each
    CrossoverThrough Hole1.08", 28 mm22534T2800000
     
    back to top