McMaster-Carr logo
    Filter by
    Fitting Type
    Conduit Trade Size
    Industrial Info Snippet
    System of Measurement
    ID
    Attribute Image
    Pipe Size
    Industrial Info Compare
    Hole Diameter
    Attribute Image
    Connects To
    Thread Type
    Industrial Info Compare
    Conduit Texture
    Maximum Temperature
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Industrial Info Compare
    Export Control Classification Number (ECCN)
    Industrial Info Compare
    DFARS Specialty Metals
    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)
    35 Products
    About Conduit
    industrial info icon

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

    Thin-Wall (EMT) Metal Conduit and Fittings

    Image of System. Front orientation. Conduit and Fittings. Thin-Wall (EMT) Metal Conduit and Fittings.
    With a thinner wall, this conduit is a lighter alternative to IMC and RMC. The most common choice for indoor walls and ceilings, it shields wiring from scrapes and bumps. EMT can dent or crush from impact, however, so it should be routed away from high‑traffic areas where carts and vehicles pass through.
    Conduit
    Image of Product. Front orientation. Conduit and Fittings. Thin-Wall (EMT) Metal Conduit and Fittings, Conduit .
    Run wiring through conduit to route and protect it.
    Galvanized Steel—Strong and resists rust and mild chemicals.
    304 Stainless Steel—The choice for wet and outdoor environments.
    5 ft. Long
    10 ft. Long
    Conduit
    Trade Size
    Specs.
    Met
    Choose a Color
    Each
    Each
    Galvanized Steel
    1
    		UL Listed
    		Black, Blue, White, Red———01829T3000000
    1
    		UL Listed
    		—7126K130000007126K300000
     
    304 Stainless Steel
    1
    		——1831T130000001831T23000000
     
    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
    		FemaleZincAluminum Wire, Copper WireHingeUL Listed, ANSI/NEMA FB 17513K253000000

    Flexible Pipe and Tubing Grommets

    Image of Product. Front orientation. Grommets. Flexible Pipe and Tubing Grommets.
    Image of Attribute. Front orientation. Contains Annotated. Flexible Pipe and Tubing Grommets.
    These grommets flex to relieve strain and keep a secure hold on moving or misaligned pipe and tubing. They seal the gap between pipe and tubing and a panel so liquid and debris don’t leak through.
    Chemical-Resistant Vinyl Plastic—These grommets resist a wide range of acids, bases, solvents, and other harsh chemicals.
    For Hole
    Dia.
    For OD
    For Pipe
    Size
    For Tube
    OD
    For Material
    Thk.
    ID
    Flange
    Dia.
    Overall
    Ht.
    Temp.,
    ° F
    For Use
    Outdoors
    Color
    Each
    Chemical-Resistant Vinyl Plastic
    2 1/8"1.11" to 1.19"3/4
    		1 1/8"0.05" to 0.12"1.05"2 5/8"0.67"-40 to 200YesBlack63595K4900000
     

    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.
    Silicone Rubber Cover—Protects from moisture, chemicals, corrosion, and temperature fluctuations.
    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
    		4"Zinc-Plated Steel0 to 140——5, 10, 25, 50, 100Gray74525K830000000000
    1
    		4"Zinc-Plated Steel0 to 140—NSF/ANSI 169
    		5, 10, 25, 50, 100White8235K6100000000
    1
    		6"Zinc-Plated Steel-50 to 220Copper Ground WireUL Listed
    		2, 5, 10, 25, 50, 100Gray8068K340000000000
    1
    		6"Zinc-Plated Steel-20 to 175Copper Ground WireCSA Certified, UL Listed2, 5, 10, 25, 50, 100Gray8071K440000000000
    1
    		6"Zinc-Plated Steel0 to 140Copper Ground WireCSA Certified, UL Listed5, 10, 25, 50, 100Gray, Blue7127K400000000
     
    TPE Cover
    1
    		4"Zinc-Plated Steel-75 to 300——2, 5, 10, 25, 50, 100Black8235K540000000000
     
    Silicone Rubber Cover
    1
    		6"Zinc-Plated Steel-90 to 390Copper Ground Wire—2, 5, 10, 25, 50, 100Gray8235K670000000000
     
    Ultra Flexible
     
    PVC Cover
    1
    		3"Zinc-Plated Steel0 to 140——5, 10, 25, 50, 100Black8069K1400000000
     

    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.
    304 Stainless Steel—The choice for wet and outdoor environments.
    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.
    5 ft. Long
    10 ft. Long
    Conduit
    Trade Size
    Thread
    Type
    Conduit
    Type
    Specs. Met
    Each
    Each
    304 Stainless Steel
    1
    		NPT
    		RMC
    		C-UL Listed, UL Listed5150K1300000005150K230000000
     

    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
    		6"Gray0 to 165CSA Certified, UL Listed5, 10, 25, 50, 1007581K440000000000
     

    Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe

    Connect air and natural gas lines in low-pressure, noncorrosive applications. This pipe is also known as Schedule 40.
    Pipe—Threaded on Both Ends
    Image of Product. Male. Front orientation. Pipe and Fittings. Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe, Pipe—Threaded on Both Ends, Male, Threaded Fitting Connection.

    Male

    Welded—Pipe has a weld bead on the inside.
    Lg.
    Construction
    Pipe
    Schedule
    Material
    Each
    NPT Male
     
    1 Pipe Size
    7 1/2"Welded40
    		Steel
    		44615K755000000
    8 1/2"Welded40
    		Steel
    		44615K75600000
    9 1/2"Welded40
    		Steel
    		44615K75700000
    10 1/2"Welded40
    		Steel
    		44615K75800000
    11 1/2"Welded40
    		Steel
    		44615K75900000
    30"Welded40
    		Steel
    		44615K76100000
    42"Welded40
    		Steel
    		44615K76200000
    54"Welded40
    		Steel
    		44615K76300000
     
    Pipe Adapters—Threaded on Both Ends
    Image of Product. Male. Front orientation. Pipe and Fittings. Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe, Pipe Adapters—Threaded on Both Ends, Male, Threaded Fitting Connection.

    Male

    Welded—Pipe has a weld bead on the inside.
    Lg.
    Construction
    Pipe
    Schedule
    Material
    Each
    BSPT Male × NPT Male
     
    1 Pipe Size
    2"Welded40
    		Steel
    		4788K122000000
    3"Welded40
    		Steel
    		4788K12300000
    4"Welded40
    		Steel
    		4788K12400000
    6"Welded40
    		Steel
    		4788K12500000
     

    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
    		1.05"1.3"3"0 to 155UL Recognized Component
    		5, 10, 25, 50, 1007609K50000000000
     

    Standard-Wall Galvanized Iron and Steel Threaded Pipe Nipples and Pipe

    Also known as Schedule 40, this pipe is intended for low-pressure applications, such as water systems and general utility piping. It's made of galvanized steel to resist rust in wet and outdoor environments.
    Pipe Adapters—Threaded on Both Ends
    Image of Product. Male. Front orientation. Pipe and Fittings. Standard-Wall Galvanized Iron and Steel Threaded Pipe Nipples and Pipe, Pipe Adapters—Threaded on Both Ends, Male, Threaded Fitting Connection.

    Male

    Welded—Pipe has a weld bead on the inside.
    Lg.
    Construction
    Pipe
    Schedule
    Material
    Each
    BSPT Male × NPT Male
     
    1 Pipe Size
    2"Welded40
    		Galvanized Steel4859K312000000
    3"Welded40
    		Galvanized Steel4859K31300000
    4"Welded40
    		Galvanized Steel4859K31400000
    6"Welded40
    		Galvanized Steel4859K31500000
     
    back to top