McMaster-Carr

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	OD OD

0.039"

	ID ID

	Wall Thickness Wall Thickness

	Shape Shape


Round Tube	Rectangular Tube

	Material Material

Hard Fiber

Carbon Fiber

	Color Color

	Gray
	Black

	Performance Properties Performance Properties

High Strength

Multipurpose

Impact Resistant

	Texture Texture


Smooth	Coarse

	Tensile Strength Rating Tensile Strength Rating

Excellent

Good

	Water Absorption Rating Water Absorption Rating

Poor

Not Rated

	Electrical Insulation Rating Electrical Insulation Rating

Poor

Not Rated

	Impact Strength Rating Impact Strength Rating

Good

Not Rated

	Impact Strength Impact Strength

1.8-2.5 ft.-lbs./in.

Not Rated

	Flexural Strength Flexural Strength

16,000-29,000 psi

89,000-174,000 psi

	Compressive Strength Compressive Strength

35,000 psi

75,000-128,000 psi

	Length Length

	Hardness Rating Hardness Rating

Hard

Not Rated

	Appearance Appearance

Checked

Plain

	Outside Width Outside Width

0.83"

1.08"

1.37"

	Outside Height Outside Height

0.83"

1.08"

1.37"

	Minimum Temperature Minimum Temperature

0° F

Not Rated

	Maximum Temperature Maximum Temperature

180° F

235° F

250° F

	Density Density

0.043 lbs./cu. in.

0.054 lbs./cu. in.

0.05-0.067 lbs./cu. in.

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About Composites

Color: Gray
Max. Temperature: 235° F
Tensile Strength: 9,000-21,000 psi (Good)
Impact Strength: 1.8-2.5 ft.-lbs./in. (Good)
Hardness: Rockwell R80 (Hard)
For Use Outdoors: No
Specifications Met: MIL-F-10336A, MIL-F-1148A, UL 94HB

Readily machined and punched into custom parts, these hard fiber tubes are often made into bushings and washers. Also known as vulcanized fiber, they're constructed from lightweight cotton fabric that's been chemically treated to make it hard and dense.

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

Wall Thick.	Wall Thick. Tolerance	OD	OD Tolerance	ID	ID Tolerance	Lg.		Each
1/16"	-0.01" to 0.01"	9/16"	-0.005" to 0.005"	7/16"	-0.008" to 0.008"	40"	0000000	000000
1/16"	-0.01" to 0.01"	5/8"	-0.005" to 0.005"	1/2"	-0.008" to 0.008"	40"	0000000	00000
1/16"	-0.01" to 0.01"	7/8"	-0.005" to 0.005"	3/4"	-0.008" to 0.008"	40"	0000000	00000
1/16"	-0.01" to 0.01"	1"	-0.005" to 0.005"	7/8"	-0.008" to 0.008"	40"	0000000	00000
1/8"	-0.015" to 0.015"	11/16"	-0.005" to 0.005"	7/16"	-0.008" to 0.008"	40"	0000000	00000
1/8"	-0.01" to 0.01"	3/4"	-0.005" to 0.005"	1/2"	-0.008" to 0.008"	40"	0000000	00000
1/8"	-0.01" to 0.01"	1 1/4"	-0.008" to 0.008"	1"	-0.008" to 0.008"	40"	0000000	00000
1/8"	-0.01" to 0.01"	1 1/2"	-0.008" to 0.008"	1 1/4"	-0.01" to 0.01"	40"	0000000	00000
1/8"	-0.01" to 0.01"	1 3/4"	-0.008" to 0.008"	1 1/2"	-0.01" to 0.01"	40"	0000000	00000
1/8"	-0.01" to 0.01"	2 1/4"	-0.01" to 0.01"	2"	-0.01" to 0.01"	40"	0000000	00000
1/4"	-0.015" to 0.015"	2"	-0.008" to 0.008"	1 1/2"	-0.01" to 0.01"	40"	0000000	00000

Ultra-Strength Lightweight Carbon Fiber Round Tubes

Made of carbon fiber, these are the strongest composite round tubes we offer. Carbon fiber is comparable in strength to 6061 aluminum yet lighter in weight. These round tubes are often used to build frames and structures.

Plain Tubes

Color: Black
Max. Temperature: 180° F
Tensile Strength: 120,000-175,000 psi (Excellent)
Impact Strength: Not Rated
Hardness: Not Rated
For Use Outdoors: No

12" Lg.
Wall Thick.	OD	OD Tolerance	ID	ID Tolerance		Each
0.01"	0.039"	-0.006" to 0.006"	0.02"	-0.006" to 0.006"	00000000	00000
0.02"	0.078"	-0.006" to 0.006"	0.039"	-0.006" to 0.006"	00000000	0000
0.02"	0.118"	-0.006" to 0.006"	0.079"	-0.006" to 0.006"	00000000	0000
0.02"	0.236"	-0.006" to 0.006"	0.196"	-0.006" to 0.006"	00000000	0000
0.04"	0.197"	-0.006" to 0.006"	0.118"	-0.006" to 0.006"	00000000	0000
0.04"	0.314"	-0.006" to 0.006"	0.236"	-0.006" to 0.006"	00000000	0000
0.04"	0.393"	-0.006" to 0.006"	0.314"	-0.006" to 0.006"	00000000	0000
0.041"	0.472"	-0.006" to 0.006"	0.39"	-0.006" to 0.006"	00000000	00000
39" Lg.
0.01"	0.039"	-0.006" to 0.006"	0.02"	-0.006" to 0.006"	00000000	00000
0.02"	0.078"	-0.006" to 0.006"	0.039"	-0.006" to 0.006"	00000000	0000
0.02"	0.118"	-0.006" to 0.006"	0.079"	-0.006" to 0.006"	0000000	0000
0.02"	0.236"	-0.006" to 0.006"	0.196"	-0.006" to 0.006"	0000000	00000
0.04"	0.197"	-0.006" to 0.006"	0.118"	-0.006" to 0.006"	0000000	00000
0.04"	0.314"	-0.006" to 0.006"	0.236"	-0.006" to 0.006"	0000000	00000
0.04"	0.393"	-0.006" to 0.006"	0.314"	-0.006" to 0.006"	0000000	00000
0.041"	0.472"	-0.006" to 0.006"	0.39"	-0.006" to 0.006"	0000000	00000
72" Lg.
0.01"	0.039"	-0.006" to 0.006"	0.02"	-0.006" to 0.006"	00000000	00000
0.02"	0.078"	-0.006" to 0.006"	0.039"	-0.006" to 0.006"	00000000	00000
0.02"	0.118"	-0.006" to 0.006"	0.079"	-0.006" to 0.006"	00000000	00000
0.02"	0.236"	-0.006" to 0.006"	0.196"	-0.006" to 0.006"	00000000	00000
0.04"	0.197"	-0.006" to 0.006"	0.118"	-0.006" to 0.006"	00000000	00000
0.04"	0.314"	-0.006" to 0.006"	0.236"	-0.006" to 0.006"	00000000	00000
0.04"	0.393"	-0.006" to 0.006"	0.314"	-0.006" to 0.006"	00000000	00000
0.041"	0.472"	-0.006" to 0.006"	0.39"	-0.006" to 0.006"	00000000	00000

Checked Tubes

Color: Black
Max. Temperature: See table
Tensile Strength: 120,000-175,000 psi (Excellent)
Impact Strength: Not Rated
Hardness: Not Rated
For Use Outdoors: No

Wall Thick.	Wall Thick. Tolerance	OD	OD Tolerance	ID	ID Tolerance	Max. Temp., °F		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1/32"	-0.005" to 0.005"	1"	-0.012" to 0.012"	15/16"	-0.006" to 0.006"	180°	0000000	000000	000000	0000000
0.041"	-0.005" to 0.005"	0.832"	-0.012" to 0.012"	3/4"	-0.006" to 0.006"	250°	0000000	00000	00000	000000
0.042"	-0.005" to 0.005"	0.584"	-0.012" to 0.012"	1/2"	-0.006" to 0.006"	250°	0000000	00000	00000	000000
0.042"	-0.005" to 0.005"	1.334"	-0.012" to 0.012"	1 1/4"	-0.006" to 0.006"	250°	0000000	00000	000000	000000
0.05"	-0.005" to 0.005"	1.6"	-0.012" to 0.012"	1 1/2"	-0.006" to 0.006"	250°	0000000	00000	000000	000000
0.06"	-0.005" to 0.005"	1.12"	-0.012" to 0.012"	1"	-0.006" to 0.006"	250°	0000000	00000	000000	000000
1/16"	-0.005" to 0.005"	1 5/16"	-0.012" to 0.012"	1 3/16"	-0.006" to 0.006"	180°	0000000	00000	000000	000000
1/16"	-0.005" to 0.005"	1 5/8"	-0.012" to 0.012"	1 1/2"	-0.006" to 0.006"	180°	0000000	00000	000000	000000
1/16"	-0.005" to 0.005"	1 7/8"	-0.012" to 0.012"	1 3/4"	-0.006" to 0.006"	180°	0000000	00000	000000	000000

Ultra-Strength Lightweight Carbon Fiber Square Tubes

Color: Black
Temperature Range: 0° F to 250° F
Tensile Strength: 120,000-175,000 psi (Excellent)
Impact Strength: Not Rated
Hardness: Not Rated
For Use Outdoors: No

Often used to build frames and structures, these square tubes are made of carbon fiber, the strongest composite we offer. Carbon fiber is comparable in strength to 6061 aluminum yet lighter in weight.

Outside				Inside
Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.		Each
12" Lg.
0.04" Wall Thick. (-0.02" to 0.02")
0.83"	-0.02" to 0.02"	0.83"	-0.02" to 0.02"	3/4"	3/4"	0000000	000000
1.08"	-0.02" to 0.02"	1.08"	-0.02" to 0.02"	1"	1"	0000000	00000
0.06" Wall Thick. (-0.02" to 0.02")
1.37"	-0.02" to 0.02"	1.37"	-0.02" to 0.02"	1 1/4"	1 1/4"	0000000	00000
32" Lg.
0.04" Wall Thick. (-0.02" to 0.02")
0.83"	-0.02" to 0.02"	0.83"	-0.02" to 0.02"	3/4"	3/4"	0000000	000000
1.08"	-0.02" to 0.02"	1.08"	-0.02" to 0.02"	1"	1"	0000000	000000
0.06" Wall Thick. (-0.02" to 0.02")
1.37"	-0.02" to 0.02"	1.37"	-0.02" to 0.02"	1 1/4"	1 1/4"	0000000	000000

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About Composites

Easy-to-Machine Hard Fiber Tubes

Ultra-Strength Lightweight Carbon Fiber Round Tubes

Ultra-Strength Lightweight Carbon Fiber Square Tubes