Furnace Fixtures | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Shape Shape


U Channel	90° Angle

Sheet and Bar

	Maximum Temperature Maximum Temperature

	Width Width

	Length Length

	Performance Properties Performance Properties

	Outside Height Outside Height

	Construction Construction

	Inside Width Inside Width

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Outside Width Outside Width

	Thickness Thickness

	Texture Texture


Smooth	Coarse

	Thread Pitch Thread Pitch

	Thread Type Thread Type

UNC

Metric

	Tensile Strength Tensile Strength

	Wall Thickness Wall Thickness

	Hardness Hardness

Shore D75

Not Rated

	Height Height

	Inside Corner Shape Inside Corner Shape

Round

Square

	Appearance Appearance

Checked

Glossy

	Compressive Strength Compressive Strength

14,000 psi

80,000 psi

89,000 psi

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56 Products

About Composites

About Threaded Studs and Rods

About Nuts, Materials, and Finishes

Unlike metal nuts, these carbon fiber square nuts won’t warp at extreme temperatures, making them ideal for heat treating and furnace fixtures. They are lightweight with an excellent strength-to-weight ratio and can be used for storage racks and shelving. Large flat sides make these nuts easy to grip with a wrench and keep them from rotating in channels and square holes.

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

Carbon Fiber
Thread Size	Width	Height	Tensile Strength, psi	Maximum Temperature, °F		Each
1/4"-20	1/2"	1/4"	17,000	3630°	000000000	00000
5/16"-18	5/8"	1/4"	17,000	3630°	000000000	0000
3/8"-16	3/4"	13/32"	17,000	3630°	000000000	00000
1/2"-13	1"	1/2"	17,000	3630°	000000000	00000
1/2"-13	1 1/2"	5/16"	17,000	3630°	000000000	00000
5/8"-11	1 1/2"	5/8"	17,000	3630°	000000000	00000
3/4"-10	1"	3/4"	17,000	3630°	000000000	00000
3/4"-10	1 1/2"	13/32"	17,000	3630°	000000000	00000
1"-8	2"	3/8"	17,000	3630°	000000000	00000

Metric Ultra-High-Temperature Carbon Fiber Square Nuts

Unlike metal nuts, these metric carbon fiber square nuts won’t warp at extreme temperatures, making them ideal for heat treating and furnace fixtures. They are lightweight with an excellent strength-to-weight ratio and can be used for storage racks and shelving. Large flat sides make these nuts easy to grip with a wrench and keep them from rotating in channels and square holes.

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

Thread
Size	Pitch, mm	Width	Height	Tensile Strength, psi	Maximum Temperature, °F		Each
Carbon Fiber
M6	1	1/2"	1/4"	17,000	3630°	000000000	00000
M8	1.25	1/2"	1/4"	17,000	3630°	000000000	00000
M10	1.5	3/4"	13/32"	17,000	3630°	000000000	00000
M12	1.75	3/4"	13/32"	17,000	3630°	000000000	00000

Ultra-High-Temperature Carbon Fiber Threaded Rods

Unlike metal rods, these threaded rods will not warp at extreme temperatures, making them ideal for heat treating and furnace fixtures. They are lightweight with an excellent strength-to-weight ratio, and the material heats up quickly to reduce cycle times.

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

Carbon Fiber
Length, ft.	Color	Hardness	Maximum Temperature, °F		Each
1/4"-20
3	Black	Shore D75	3630°	000000000	0000000
5/16"-18
3	Black	Shore D75	3630°	000000000	000000
1/2"-13
3	Black	Shore D75	3630°	000000000	000000
5/8"-11
3	Black	Shore D75	3630°	000000000	000000
3/4"-10
3	Black	Shore D75	3630°	000000000	000000
1"-8
3	Black	Shore D75	3630°	000000000	000000
3/8"-16
3	Black	Shore D75	3630°	000000000	000000

Metric Ultra-High-Temperature Carbon Fiber Threaded Rods

Unlike metal rods, these metric threaded rods will not warp at extreme temperatures, making them ideal for heat treating and furnace fixtures. They are lightweight with an excellent strength-to-weight ratio, and the material heats up quickly to reduce cycle times.

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

Carbon Fiber
Length, m	Thread Pitch, mm	Color	Hardness	Maximum Temperature, °F		Each
M6
1	1	Black	Shore D75	3630°	000000000	0000000
M8
1	1.25	Black	Shore D75	3630°	000000000	000000
M10
1	1.5	Black	Shore D75	3630°	000000000	000000
M12
1	1.75	Black	Shore D75	3630°	000000000	000000

Ultra-Strength Lightweight Carbon Fiber U-Channels

Color: Black
Tensile Strength: 103,000 psi (Excellent)
Fiber Tensile Stiffness: Standard (33-36 msi)
Maximum Temperature: 275° F
Impact Strength: Not Rated
Hardness: Not Rated
For Use Outdoors: No

Often used to make railings, edge covers, and other structural framing parts, these carbon fiber U-channels add stiffness and strength to applications without adding a lot of weight. They’re similar in strength to 6061 aluminum yet lighter in weight. With a plain weave and 0°/90° construction layup, all are easy to machine. They won’t splinter when cut.

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

Outside				Inside		36" Lg.		74" Lg.
Width	Width Tolerance	Height	Height Tolerance	Width	Height		Each		Each
Checked Glossy U-Channels
0.05" Wall Thickness (-0.06" to 0.06")
2 1/8"	-0.125" to 0.125"	1"	-0.126" to 0.126"	2"	0.945"	00000000	0000000	00000000	0000000
2 1/8"	-0.125" to 0.125"	1 1/4"	-0.128" to 0.128"	2"	1.195"	00000000	000000	00000000	000000
2 1/8"	-0.125" to 0.125"	1 1/2"	-0.132" to 0.132"	2"	1.445"	00000000	000000	00000000	000000
3 1/8"	-0.125" to 0.125"	1 1/2"	-0.132" to 0.132"	3"	1.445"	00000000	000000	00000000	000000
3 1/8"	-0.125" to 0.125"	1 3/4"	-0.134" to 0.134"	3"	1.695"	00000000	000000	00000000	000000
0.06" Wall Thickness (-0.06" to 0.06")
4 1/8"	-0.125" to 0.125"	2"	-0.136" to 0.136"	4"	1.935"	00000000	000000	00000000	000000
4 1/8"	-0.125" to 0.125"	2 1/4"	-0.138" to 0.138"	4"	2.185"	00000000	000000	00000000	000000

Ultra-Strength Lightweight Carbon Fiber 90° Angles

Round Inside Corner

Square Inside Corner

Color: Black
Tensile Strength:
Round Inside Corner: 170,000 psi (Excellent)
Square Inside Corner: 135,000 psi (Excellent)
Fiber Tensile Stiffness: Standard (33-36 msi)
Maximum Temperature:
Round Inside Corner: 185° F
Square Inside Corner: 250° F
Impact Strength: Not Rated
Hardness: Not Rated

Often used as brackets to build frames and structures, these composite angles are the strongest we offer. Made of carbon fiber, they’re comparable in strength to 6061 aluminum but are lighter in weight.

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

Outside				Inside
Width	Width Tolerance	Height	Height Tolerance	Height	Width		Each
12" Lg.
Round Inside Corner
0.065" Wall Thickness (-0.06" to 0.06")
3"	-0.125" to 0.125"	3"	-0.125" to 0.125"	2.935"	2.935"	00000000	0000000
0.13" Wall Thickness (-0.06" to 0.06")
3"	-0.125" to 0.125"	3"	-0.125" to 0.125"	2.87"	2.87"	00000000	000000
Square Inside Corner
0.08" Wall Thickness (-0.06" to 0.06")
1 1/2"	-0.125" to 0.125"	1 1/2"	-0.125" to 0.125"	1.42"	1.42"	00000000	00000
36" Lg.
Round Inside Corner
0.065" Wall Thickness (-0.06" to 0.06")
3"	-0.125" to 0.125"	3"	-0.125" to 0.125"	2.935"	2.935"	00000000	000000
0.13" Wall Thickness (-0.06" to 0.06")
3"	-0.125" to 0.125"	3"	-0.125" to 0.125"	2.87"	2.87"	00000000	000000
Square Inside Corner
0.08" Wall Thickness (-0.06" to 0.06")
1 1/2"	-0.125" to 0.125"	1 1/2"	-0.125" to 0.125"	1.42"	1.42"	00000000	000000
6 ft. Lg.
Round Inside Corner
0.065" Wall Thickness (-0.06" to 0.06")
3"	-0.125" to 0.125"	3"	-0.125" to 0.125"	2.935"	2.935"	00000000	000000
0.13" Wall Thickness (-0.06" to 0.06")
3"	-0.125" to 0.125"	3"	-0.125" to 0.125"	2.87"	2.87"	00000000	000000
Square Inside Corner
0.08" Wall Thickness (-0.06" to 0.06")
1 1/2"	-0.125" to 0.125"	1 1/2"	-0.125" to 0.125"	1.42"	1.42"	00000000	000000

Ultra-High-Temperature Carbon Fiber U-Channels

Color: Black
Tensile Strength: 11,000 psi (Good)
Maximum Temperature: 5,000° F
Impact Strength: Not Rated
Hardness: Not Rated
For Use Outdoors: No

Unlike metal channels, these carbon fiber U-channels won’t warp at extreme temperatures, so they’re ideal for heat treating and furnace fixtures. They are lightweight with an excellent strength-to-weight ratio and the material heats up quickly to reduce cycle times.

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

Outside				Inside		39" Lg.
Width	Width Tolerance	Height	Height Tolerance	Height	Width		Each
0.05" Wall Thickness (-0.04" to 0.04")
1 1/2"	-0.08" to 0.08"	1 1/2"	-0.08" to 0.08"	1.45"	1.4"	00000000	0000000
1 1/2"	-0.08" to 0.08"	2"	-0.08" to 0.08"	1.95"	1.4"	00000000	000000
2"	-0.08" to 0.08"	2"	-0.08" to 0.08"	1.95"	1.9"	00000000	000000
0.1" Wall Thickness (-0.04" to 0.04")
1 1/2"	-0.08" to 0.08"	3"	-0.08" to 0.08"	2.99"	1.48"	00000000	000000

Ultra-High-Temperature Carbon Fiber Sheets

Color: Black
Maximum Temperature: 5,000° F
Tensile Strength: 11,000 psi (Good)
Impact Strength: Not Rated
Hardness: Not Rated
For Use Outdoors: No

Unlike metal sheets, these carbon fiber sheets won’t warp at extreme temperatures, so they’re ideal for heat treating and furnace fixtures. They are lightweight with an excellent strength-to-weight ratio and the material heats up quickly to reduce cycle times.

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

			48" × 48"
Thickness	Thickness Tolerance	Appearance		Each
0.05"	-0.01" to 0.01"	Checked	00000000	000000000
1/8"	-0.02" to 0.02"	Checked	00000000	00000000
1/4"	-0.02" to 0.02"	Checked	00000000	00000000
1/2"	-0.05" to 0.05"	Checked	00000000	00000000

Ultra-High-Temperature Carbon Fiber 90° Angles

Color: Black
Tensile Strength: 11,000 psi (Good)
Maximum Temperature: 5,000° F
Impact Strength: Not Rated
Hardness: Not Rated
For Use Outdoors: No

Unlike metal angles, these carbon fiber 90° angles won’t warp at extreme temperatures, so they’re ideal for heat treating and furnace fixtures. They are lightweight with an excellent strength-to-weight ratio and the material heats up quickly to reduce cycle times.

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

Outside				Inside		39" Lg.
Width	Width Tolerance	Height	Height Tolerance	Height	Width		Each
0.1" Wall Thickness (-0.04" to 0.04")
2 1/2"	-0.08" to 0.08"	2 1/2"	-0.08" to 0.08"	2.4"	2.4"	00000000	0000000