0.61" Tubing | McMaster-Carr

Often used in place of aluminum for structural frames, machinery components, and robotics, these tubes are lighter in weight and almost as rigid. Carbon fiber is known for its use in the aerospace industry where a balance of weight and strength is vital. Thanks to these tubes being lightweight, they reduce wear and stress on motorized parts to extend the life of machinery.

Plain glossy tubes and checked tubes have layers with fibers that alternate in two directions, so they resist bending and crushing across the entire tube. They have more structural integrity compared to plain matte tubes.

Glossy carbon fiber has a shiny finish that can be sanded to matte.

For technical drawings and 3-D models, click on a part number.

Plain Tubes

Color: Black
Max. Temperature: 180° F
Tensile Strength:
Glossy Tubes: 125,000-175,000 psi (Excellent)
Matte Tubes: 120,000-175,000 psi (Excellent)
Fiber Tensile Stiffness: Standard (33-36 msi)
Impact Strength: Not Rated
Hardness: Not Rated
For Use Outdoors: No

					12" Lg.		36" Lg.		72" Lg.
OD	OD Tolerance	ID	ID Tolerance	Construction Layup		Each		Each		Each
Glossy Tubes (Unidirectional Weave)
0.055" Wall Thickness -0.005"; 0.005"
0.61"	-0.008" to 0.008"	1/2"	-0.003" to 0.003"	0°/90°	00000000	000000	00000000	000000	00000000	000000

Flexible Metal Conduit

Conduit

Also known as FMC, this conduit offers the crush resistance of metal combined with flexibility to handle bends in tight spaces.

Zinc-plated steel conduit has a heavy zinc coating for corrosion resistance. Aluminum conduit is lighter than steel and has good corrosion resistance. It's often used to hook up motors and light fixtures.

							Per Ft.
Conduit Trade Size	ID	OD	Bend Radius	Specifications Met	Lengths, ft.		1-99	100-Up
Flexible Zinc-Plated Steel
3/8	0.38"	0.61"	2"	UL Listed	10, 25, 50, 100	0000000	00000	00000
Flexible Aluminum
3/8	0.38"	0.61"	2"	UL Listed	10, 25, 50, 100	0000000	0000	000

Straight Adapters—Zinc

Twist-In × Threaded

Screw-Clamp × Threaded

Screw-Clamp
× Threaded—
With Two Screws

Screw-Clamp × Snap-In

Push-In × Snap-In

Attach flexible metal conduit to a knockout in an outlet box or enclosure. The screw-clamp end tightens around conduit with a screw. The twist-in end attaches to conduit with a few quick turns.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	For Knockout Trade Size	Gender	Includes		Each
Twist-In Conduit Connection × Threaded Electrical Box Connection
3/8	Male	1/2	NPSM	__	Male	Locknut	0000000	00000
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPSM	__	Male	Locknut	0000000	0000
3/8	Female	1/2	NPSM	__	Male	Locknut, Two Screws	0000000	0000
Screw-Clamp Conduit Connection × Snap-In Electrical Box Connection
3/8	Female	__	__	1/2	Male	__	0000000	0000
Push-In Conduit Connection × Snap-In Electrical Box Connection
3/8	Female	__	__	1/2	Male	__	0000000	0000

Straight Adapters—Iron

Attach flexible metal conduit to a knockout in an outlet box or enclosure. The screw-clamp end tightens around conduit with a screw.

Iron adapters are stronger and more durable than zinc adapters.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Includes		Each
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPSM	Male	Locknut	0000000	00000

Straight Adapters—Steel

Attach flexible metal conduit to a knockout in an outlet box or enclosure. The screw-on end screws onto the OD of conduit.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Includes	Specifications Met		Each
Screw-On Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPSM	Male	Locknut	UL Listed, C-UL Listed	0000000	00000

Straight Adapters—316 Stainless Steel

Screw-Clamp × Threaded

Twist-In × Threaded

Attach flexible metal conduit to a knockout in an outlet box or enclosure. The screw-clamp end tightens around conduit with a screw. The twist-in end attaches to conduit with a few quick turns.

316 stainless steel adapters are the most corrosion resistant.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender	Includes		Each
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPSM	Male	Locknut	0000000	000000
Twist-In Conduit Connection × Threaded Electrical Box Connection
3/8	Male	1/2	NPSM	Male	Locknut	0000000	00000

90° Elbow Adapters—Zinc

Attach flexible metal conduit to a knockout in an outlet box or enclosure. The screw-clamp end tightens around conduit with a screw.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender		Each
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPSM	Male	0000000	00000
3/8	Female	1/2	NPSM	Male	0000000	0000

90° Elbow Adapters—Iron

Attach flexible metal conduit to a knockout in an outlet box or enclosure. The screw-clamp end tightens around conduit with a screw.

Iron adapters are stronger and more durable than zinc adapters.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender		Each
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPSM	Male	0000000	00000

90° Elbow Adapters—316 Stainless Steel

Attach flexible metal conduit to a knockout in an outlet box or enclosure. The screw-clamp end tightens around conduit with a screw.

316 stainless steel adapters are the most corrosion resistant.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	Gender		Each
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPSM	Male	0000000	000000

Wye Adapters—Zinc

Push-In × Snap-In

Screw-Clamp × Snap-In

Screw-Clamp × Threaded

Attach flexible metal conduit and types AC and MC armored cable to a knockout in an outlet box or enclosure. Wye adapters join two pieces of conduit or armored cable to one knockout. The snap-in end has tabs that snap into the knockout without locknuts or tools.

The screw-clamp end tightens around conduit with a screw.

Conduit Connection		Electrical Box Connection
Conduit Trade Size	Gender	Pipe Size	Thread Type	For Knockout Trade Size	Gender	Includes		Each
Push-In Conduit Connection × Snap-In Electrical Box Connection
3/8	Female	__	__	1/2	Male	__	0000000	00000
Screw-Clamp Conduit Connection × Snap-In Electrical Box Connection
3/8	Female	__	__	1/2	Male	__	0000000	0000
Screw-Clamp Conduit Connection × Threaded Electrical Box Connection
3/8	Female	1/2	NPSM	__	Male	Locknut	0000000	0000

Grommets—Plastic

Also known as antishort bushings, these grommets slide into the ends of conduit and types AC and MC armored cable to protect wire and cable from sharp edges.

Conduit Connection
Conduit Trade Size	Gender	Color	Pkg. Qty.		Pkg.
3/8	Female	Red	100	0000000	000000