Furnace Fixtures | McMaster-Carr

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Carbon Fiber Construction

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41 Products

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications, from mounting I-beams to suspending light fixtures.

Carbon Fiber

Ultra-High-Temperature Carbon Fiber—Unlike metal rods, these won't warp in extreme temperatures, making them suitable for furnace fixtures and other heat-treating applications. Not for use in oxidizing environments.

	Color		Each
Ultra-High-Temperature Carbon Fiber







	1/4"-20

	3 ft.	3,990	Durometer 75D	Black	92103A110	0000000




			5/16"-18

			3 ft.	3,990	Durometer 75D	Black	92103A120	000000




					3/8"-16

					3 ft.	3,990	Durometer 75D	Black	92103A130	000000




							1/2"-13

							3 ft.	3,990	Durometer 75D	Black	92103A140	000000




									M6 × 1 mm

									1 m	3,990	Durometer 75D	Black	90688A110	000000




											M8 × 1.25 mm

											1 m	3,990	Durometer 75D	Black	90688A120	000000

Ultra-High-Temperature Carbon Fiber Square Nuts

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. Not for use in oxidizing environments.

	Wd.	Ht.	Tensile Strength, psi	Max. Temp., ° F		Each
Carbon Fiber



	1/4"-20	1/2"	1/4"	17,000	3,990	91971A011	00000


	5/16"-18	5/8"	1/4"	17,000	3,990	91971A012	00000
	3/8"-16	3/4"	13/32"	17,000	3,990	91971A013	00000
	1/2"-13	1"	1/2"	17,000	3,990	91971A014	00000
	M6 × 1 mm	1/2"	1/4"	17,000	3,990	90713A011	0000
	M8 × 1.25 mm	1/2"	1/4"	17,000	3,990	90713A012	00000

High-Strength Lightweight Carbon Fiber U-Channels

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.

	Outside				Inside									36" Long		74" Long
	Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.	Color	Tensile Strength, psi	Fiber Tensile Stiffness	Max. Temp., ° F	Impact Strength	Hardness	For Use Outdoors		Each		Each
Checked Glossy U-Channels







				0.05" Thick Wall (-0.06" to 0.06")

				2 1/8"	-0.125" to 0.125"	1"	-0.126" to 0.126"	2"	0.945"	Black	103,000	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	5218N112	0000000	5218N111	0000000


				2 1/8"	-0.125" to 0.125"	1 1/4"	-0.128" to 0.128"	2"	1.195"	Black	103,000	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	5218N114	000000	5218N113	000000
				2 1/8"	-0.125" to 0.125"	1 1/2"	-0.132" to 0.132"	2"	1.445"	Black	103,000	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	5218N116	000000	5218N115	000000
				3 1/8"	-0.125" to 0.125"	1 1/2"	-0.132" to 0.132"	3"	1.445"	Black	103,000	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	5218N118	000000	5218N117	000000
				3 1/8"	-0.125" to 0.125"	1 3/4"	-0.134" to 0.134"	3"	1.695"	Black	103,000	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	5218N121	000000	5218N119	000000




						0.06" Thick Wall (-0.06" to 0.06")

						4 1/8"	-0.125" to 0.125"	2"	-0.136" to 0.136"	4"	1.935"	Black	103,000	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	5218N123	000000	5218N122	000000


						4 1/8"	-0.125" to 0.125"	2 1/4"	-0.138" to 0.138"	4"	2.185"	Black	103,000	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	5218N125	000000	5218N124	000000

High-Strength Lightweight Carbon Fiber 90° Angles


Round Inside Corner	Square Inside Corner

Lighter than aluminum while remaining rigid, these angles are often used as brackets in structural framing, machinery, and robotics. Known for its use in the aerospace industry, carbon fiber offers a good balance of weight and strength. These angles reduce wear and stress on motorized parts because they are lightweight, extending the life of machinery.

They are made from layers of woven fabric that prevent fibers from splintering when cut. This checked carbon fiber is easy to machine and has a classic carbon fiber-look.

	Outside				Inside								12" Long		36" Long		6 ft. Long
	Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Ht.	Wd.	Color	Tensile Strength, psi	Fiber Tensile Stiffness	Max. Temp., ° F	Impact Strength	Hardness		Each		Each		Each
Round Inside Corner







				0.065" Thick Wall (-0.06" to 0.06")

				1"	-0.125" to 0.125"	1"	-0.125" to 0.125"	0.935"	0.935"	Black	87,000	33 msi to 36 msi (Standard)	185	Not Rated	Not Rated	3784N141	000000	3784N142	0000000	3784N143	0000000


				3"	-0.125" to 0.125"	3"	-0.125" to 0.125"	2.935"	2.935"	Black	170,000	33 msi to 36 msi (Standard)	185	Not Rated	Not Rated	3784N111	000000	3784N112	000000	3784N113	000000




						0.13" Thick Wall (-0.06" to 0.06")

						1"	-0.125" to 0.125"	1"	-0.125" to 0.125"	0.87"	0.87"	Black	87,000	33 msi to 36 msi (Standard)	185	Not Rated	Not Rated	3784N161	000000	3784N162	000000	3784N163	000000


						3"	-0.125" to 0.125"	3"	-0.125" to 0.125"	2.87"	2.87"	Black	170,000	33 msi to 36 msi (Standard)	185	Not Rated	Not Rated	3784N121	000000	3784N122	000000	3784N123	00000000


						Square Inside Corner







										0.08" Thick Wall (-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"	Black	135,000	33 msi to 36 msi (Standard)	250	Not Rated	Not Rated	3784N131	00000	3784N132	000000	3784N133	000000