McMaster-Carr logo
    Filter by
    Conduit Trade Size
    Industrial Info Snippet
    System of Measurement
    Fitting Type
    ID
    Attribute Image
    Conduit Type
    Industrial Info Compare
    Conduit Texture
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Industrial Info Compare
    Bend Radius
    Attribute Image
    Cover Material
    Industrial Info Compare
    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)
    Help me decide (beta)
    12 Products
    About Conduit
    industrial info icon

    Compare rigid and flexible conduit materials and identify the trade size for compatible fittings.

    Conduit Type

    Conduit Type

    Liquid-Tight Flexible Metal (LFMC) Conduit and Fittings

    Image of System. Front orientation. Conduit and Fittings. Liquid-Tight Flexible Metal (LFMC) Conduit and Fittings.
    Seal out moisture with conduit that also prevents crushing in tight spaces. The corrugated metal core bends around obstacles without damaging cables, and the protective cover keeps water out. Use with compatible fittings for a liquid-tight seal in wet indoor, outdoor, and underground locations.
    Conduit
    Image of Product. Front orientation. Conduit and Fittings. Liquid-Tight Flexible Metal (LFMC) Conduit and Fittings, Conduit .
    Run wiring through conduit to route and protect it.
    Ultra Flexible—Bend and twist to fit through tighter spaces than flexible conduit.
    PVC Cover—Shields wiring from moisture and chemical exposure. PVC won't corrode, but it's less chemical resistant than silicone rubber.
    TPE Cover—Lightweight protection from moisture, corrosion, and temperature fluctuations. TPE does not offer the chemical resistance of PVC or silicone rubber covers.
    Per Ft.
    Conduit
    Trade Size
    Bend
    Radius
    Material
    Temp.,
    ° F
    Includes
    Specs. Met
    Choose a Length, ft.
    Choose a
    Color
    1-99
    100-Up
    Flexible
     
    PVC Cover
    1 1/4
    		5"Zinc-Plated Steel0 to 140——2, 5, 10, 25, 50Gray74525K840000000000
    1 1/4
    		5"Zinc-Plated Steel0 to 140—NSF/ANSI 169
    		2, 5, 10, 25, 50White8235K62000000000
    1 1/4
    		7"Zinc-Plated Steel-50 to 220Copper Ground WireUL Listed
    		2, 5, 10, 25, 50Gray8068K350000000000
    1 1/4
    		7"Zinc-Plated Steel-20 to 175Copper Ground WireCSA Certified, UL Listed2, 5, 10, 25, 50Gray8071K450000000000
    1 1/4
    		7"Zinc-Plated Steel0 to 140Copper Ground WireCSA Certified, UL Listed2, 5, 10, 25, 50Gray, Blue7127K5000000000
     
    TPE Cover
    1 1/4
    		5"Zinc-Plated Steel-75 to 300——2, 5, 10, 25, 50Black8235K550000000000
     
    Ultra Flexible
     
    PVC Cover
    1 1/4
    		4"Zinc-Plated Steel0 to 140——2, 5, 10, 25, 50Black8069K1500000000
     

    Ultra-Flexible Plastic (MPT) Conduit and Fittings

    Image of System. Front orientation. Conduit and Fittings. Ultra-Flexible Plastic (MPT) Conduit and Fittings.
    The most flexible conduit we offer. The spiral construction bends, twists, and wraps machine wiring through tight spaces. Pair conduit with compatible fittings to seal out liquid and protect wiring indoors and outdoors. Conduit and fittings are made of PVC or nylon to resist moisture and chemicals.
    Conduit
    Image of Product. Front orientation. Conduit and Fittings. Ultra-Flexible Plastic (MPT) Conduit and Fittings, Conduit .
    Run wiring through conduit to route and protect it.
    Per Ft.
    Conduit
    Trade Size
    ID
    OD
    Bend
    Radius
    Temp.,
    ° F
    Specs. Met
    Choose a Length, ft.
    1-99
    100-Up
     
    PVC
    1 1/4
    		1.39"1.64"4"0 to 155UL Recognized Component
    		5, 10, 25, 50, 1007609K60000000000
     

    Liquid-Tight Flexible Plastic (LFNC-B) Conduit and Fittings

    Image of System. Front orientation. Conduit and Fittings. Liquid-Tight Flexible Plastic (LFNC-B) Conduit and Fittings.
    Block out moisture and protect wiring abrasion and crushing. This conduit has a tougher construction than LFNC-A, but it’s less resistant to vibration. For use indoors or outdoors, components are made of PVC or nylon to resist chemicals and environmental exposure. Conduit can also be buried or encased in concrete. Pair it with compatible fittings for a liquid-tight seal.
    Conduit
    Image of Product. Front orientation. Conduit and Fittings. Liquid-Tight Flexible Plastic (LFNC-B) Conduit and Fittings, Conduit .
    Run wiring through conduit to route and protect it.
    Per Ft.
    Conduit
    Trade Size
    Bend
    Radius
    Color
    Temp.,
    ° F
    Specs. Met
    Choose a Length, ft.
    1-99
    100-Up
    PVC
    1 1/4
    		7"Gray0 to 165CSA Certified, UL Listed5, 10, 25, 50, 1007581K450000000000
     

    Medium-Wall (IMC) and Thick-Wall (RMC) Metal Conduit and Fittings

    Image of System. Front orientation. Conduit and Fittings. Medium-Wall (IMC) and Thick-Wall (RMC) Metal Conduit and Fittings.
    The industry standards, IMC and RMC conduit systems offer the most durable protection indoors, outdoors, and underground. Both types have the same outside diameter, so they use many of the same fittings. This interchangeability makes retrofits easier and reduces the parts you need to keep on hand.
    Conduit
    Image of Product. Front orientation. Conduit and Fittings. Medium-Wall (IMC) and Thick-Wall (RMC) Metal Conduit and Fittings, Conduit .
    Run wiring through conduit to route and protect it.
    Galvanized Steel—Strong and resists rust and mild chemicals.
    Aluminum—One-third the weight of steel that's the same size. Aluminum is also nonmagnetic to prevent electrical interference in nearby equipment.
    RMC—The choice when you need maximum impact and crush resistance. The thickest and heaviest conduit option, it’s often found in older installations or used as structural support.
    10 ft. Long
    Conduit
    Trade Size
    Thread
    Type
    Conduit
    Type
    Specs.
    Met
    Each
    Galvanized Steel
    1 1/4
    		NPT
    		RMC
    		UL Listed
    		7307K240000000
     
    Aluminum
    1 1/4
    		NPT
    		RMC
    		UL Listed
    		9175T1400000
     
    Grounding Clamps
    Image of Product. Front orientation. Grounding Clamps.
    Prevent conduit from becoming a shock hazard by running a ground wire through the attached lug to redirect current. The included grommet protects wire and cable from abrasion when being pulled.
    Conduit
    Trade Size
    Gender
    Material
    For Use With
    Features
    Specs. Met
    Each
    1 1/4
    		FemaleZincAluminum Wire, Copper WireHingeUL Listed, ANSI/NEMA FB 17513K254000000
    back to top