7/8"-9 Conduit | McMaster-Carr

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50 Products

Weld-On Vibration-Damping Block Routing Clamps

Shown with Stacking Clamp

(Sold Separately)

Weld the bottom plate of these clamps to your mounting surface for a more secure hold than screw-on clamps. Their tight fit around pipe and tubing reduces vibration and cuts down on noise. All keep pressurized lines stable in hydraulic systems to prevent leaks, ruptures, or disconnected fittings.

Polypropylene—The body of these clamps stand up to water, most acids, alcohols, and salts. They’re commonly used to route tubing in food processing, lab, and outdoor installations.

Aluminum—Best for extreme conditions, these clamps can handle temperatures up to 570°F. They won’t rust when exposed to salt water or mild chemicals, but they shouldn’t be used with stainless steel to avoid contact corrosion. Although stronger than plastic, they’re four to five times heavier and not suitable for weight-sensitive applications.

Steel Top and Bottom Plate—Best for dry environments since moisture will cause these plates to rust.

304 Stainless Steel Top and Bottom Plate—These plates are suitable for a wide range of corrosive environments. They won't rust in wet areas and hold up against mild chemicals and solvents.

	ID
	Inch	Metric, mm	For Pipe Size	Lg.	Wd.	Ht.	Max. Pressure, psi		Each
Polypropylene







				304 Stainless Steel Top and Bottom Plate

				4"	102	3 1/2	10"	3"	7 5/8"	5,000	3249T236	0000000


				Aluminum







								Steel Top and Bottom Plate

								5 9/16"	141	5	10 5/8"	3 9/16"	9 1/16"	10,000	3050T65	000000


								6 5/8"	168	6	10 5/8"	3 9/16"	9 1/16"	10,000	3050T66	000000

U-Bolt Plates

Add a mounting plate to your U-bolt for a more secure hold at the mounting surface.

Black-Oxide Steel—Black-oxide steel mounting plates have mild corrosion resistance.

Zinc-Plated Steel— Zinc-plated steel mounting plates have good corrosion resistance in most environments.

304 Stainless Steel—304 stainless steel mounting plates have excellent corrosion resistance and good chemical resistance.

316 Stainless Steel—316 stainless steel mounting plates have excellent corrosion and chemical resistance.

	Thk.	Ctr.-to-Ctr.	Pkg. Qty.		Pkg.
Black-Oxide Steel







	For 7/8"-9 Thread

	12 7/8"	15 5/8"	2 1/2"	1/4"	13 1/4"	1	3201T131	000000


	14 1/8"	16 7/8"	2 1/2"	1/4"	15"	1	3201T141	00000
	16 1/8"	18 7/8"	2 1/2"	1/4"	17"	1	3201T151	00000


	Zinc-Plated Steel







					For 7/8"-9 Thread

					12 7/8"	15 5/8"	2 1/2"	1/4"	13 3/4"	1	8875T94	00000


					14 1/8"	16 7/8"	2 1/2"	1/4"	15"	1	8875T95	00000
					16 1/8"	18 7/8"	2 1/2"	1/4"	17"	1	8875T96	00000


					304 Stainless Steel







									For 7/8"-9 Thread

									12 7/8"	15 5/8"	2 1/2"	1/4"	13 1/4"	1	8896T42	000000


									14 1/8"	16 7/8"	2 1/2"	1/4"	15"	1	8896T43	000000
									16 1/8"	18 7/8"	2 1/2"	1/4"	17"	1	8896T59	000000


									316 Stainless Steel







													For 7/8"-9 Thread

													12 7/8"	16 1/4"	2 1/2"	1/4"	13 3/4"	1	29605T36	000000


													14 1/8"	19"	2 1/2"	1/4"	15"	1	29605T63	000000
16 1/8"													21"	2 1/2"	1/4"	17"	1	29605T64	000000

Rubber-Cushioned U-Bolts

A durable rubber cushion and mounting plate prevent corrosion and wear caused by metal-to-metal contact. The mounting plate is removable, so the U-bolts can be installed onto an existing line without needing to disassemble it. Use them to support heavy pipe, tube, and conduit from ceilings, walls, and poles. All include four nuts to allow fastening from the top and the bottom.

Galvanized Steel—Galvanized steel U-bolts have good corrosion resistance in most environments.

304 Stainless Steel—304 stainless steel U-bolts have excellent corrosion resistance and good chemical resistance.

	ID						Mounting Plate						Galvanized Steel		304 Stainless Steel
	Inch	Metric, mm	For Pipe Size	Ht.	Thread Lg.	Ctr.-to-Ctr.	Material	Lg.	Wd.	Thk.	No. of Nuts Included	Temp. Range, ° F		Each		Each
7/8"-9 Threads



		12.875"	327	12	16"	4 1/4"	13 3/4"	Rubber	16 1/2"	2 3/4"	1/8"	4	-65 to 250	30555T22	000000	30555T52	0000000


		14.125"	359	14	17 1/4"	4 1/4"	15"	Rubber	20"	2 3/4"	1/8"	4	-65 to 250	30555T63	00000	30555T64	000000
		16.125"	410	16	19 1/4"	4 1/4"	17"	Rubber	22"	2 3/4"	1/8"	4	-65 to 250	30555T65	000000	30555T66	000000

U-Bolts


Black-Oxide Steel	Zinc-Plated Steel	Galvanized Steel

304 Stainless Steel	316 Stainless Steel

Stronger than routing clamps and hangers, U-bolts support heavy pipe, tube, and conduit from ceilings, walls, and poles.

Black-Oxide Steel—Black-oxide steel U-bolts have mild corrosion resistance.

Zinc-Plated Steel—Zinc-plated steel U-bolts have good corrosion resistance in most environments.

Galvanized Steel—Galvanized steel U-bolts have better corrosion resistance than black-oxide and zinc-plated steel U-bolts.

304 Stainless Steel—304 stainless steel U-bolts have excellent corrosion resistance and good chemical resistance.

316 Stainless Steel— 316 stainless steel U-bolts have excellent corrosion and chemical resistance.

4 Nuts Included—U-bolts with four nuts allow you to secure the U-bolt from the top and the bottom.

	U-Bolts											Mounting Plates
	ID
	Inch	Metric, mm	For Pipe Size	Ht.	Thread Lg.	Wt. Cap., lb.	Ctr.-to-Ctr.	No. of Nuts Included	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
Black-Oxide Steel







				7/8"-9 Threads

				12.875"	327	12	16 1/16"	4 1/4"	6,725	13 3/4"	2	1	3201T113	000000	1	3201T131	000000


				14.125"	359	14	17 5/16"	4 1/4"	6,725	15"	2	1	3201T114	00000	1	3201T141	00000
				16.125"	410	16	19 5/16"	4 1/4"	6,725	17"	2	1	3201T115	00000	1	3201T151	00000


				Zinc-Plated Steel







								7/8"-9 Threads

								12.875"	327	12	16 1/16"	4 1/4"	6,725	13 3/4"	2	1	3043T812	00000	1	8875T94	00000


								14.125"	359	14	17 5/16"	4 1/4"	6,725	15"	2	1	3043T813	00000	1	8875T95	00000
								16.125"	410	16	19 5/16"	4 1/4"	6,725	17"	2	1	3043T814	00000	1	8875T96	00000


								Galvanized Steel







												7/8"-9 Threads

												12.875"	327	12	16 1/16"	4 1/4"	6,725	13 3/4"	2	1	2936T22	00000	—	———	0


												14.125"	359	14	17 5/16"	4 1/4"	6,725	15"	2	1	2936T23	00000	—	———	0
												16.125"	410	16	19 5/16"	4 1/4"	6,725	17"	2	1	2936T24	00000	—	———	0


												304 Stainless Steel







																7/8"-9 Threads

																12.875"	327	12	16 1/16"	4 1/4"	6,725	13 3/4"	2	1	8896T142	000000	1	8896T42	000000


																14.125"	359	14	17 5/16"	4 1/4"	6,725	15"	2	1	8896T143	000000	1	8896T43	000000
16.125"																410	16	19 5/16"	4 1/4"	6,725	17"	2	1	8896T144	000000	1	8896T59	000000


316 Stainless Steel







																7/8"-9 Threads

																12.875"	327	12	16"	4 1/4"	7,500	13 3/4"	4	1	29605T16	000000	1	29605T36	000000


																14.125"	359	14	17 3/8"	4 1/4"	7,500	15"	4	1	29605T51	000000	1	29605T63	000000
																16.125"	410	16	19 3/8"	4 1/4"	7,500	17"	4	1	29605T52	000000	1	29605T64	000000

Roller Loop Pipe Hangers

Compensate for linear movement as pipes expand and contract. The roller turns to accommodate motion as pipes carry fluids and gases at fluctuating temperatures or pressures. Attach to the ceiling with a threaded rod and nut (sold separately) or other fastener.

	ID
	Inch	Metric, mm	For Pipe Size	For Thread Size	Wt. Cap., lb.	Mounting Hole Dia.	No. of Nuts Req.		Each
Steel



		10 3/4"	273	10	7/8"-9	960	15/16"	1	3084T39	0000000


		12 3/4"	324	12	7/8"-9	1,200	15/16"	1	3084T41	000000

U-Bolts with Mounting Plates

A mounting plate provides a more secure hold at the mounting surface. Stronger than routing clamps and hangers, U-bolts support heavy pipe, tube, and conduit from ceilings, walls, and poles.

Galvanized Steel—Galvanized steel U-bolts have better corrosion resistance than black-oxide and zinc-plated steel U-bolts.

	ID							Mounting Plate
	Inch	Metric, mm	For Pipe Size	Ht.	Thread Lg.	Wt. Cap., lb.	Ctr.-to-Ctr.	No. Included	Material	Lg.	Wd.	Thk.	No. of Nuts Included		Each
Galvanized Steel







				7/8"-9 Threads

				12.875"	327	12	16 1/16"	4 1/4"	6,725	13 3/4"	1	Galvanized Steel	15 5/8"	2 1/2"	1/4"	2	2936T233	000000


				14.125"	359	14	17 5/16"	4 1/4"	6,725	15"	1	Galvanized Steel	16 7/8"	2 1/2"	1/4"	2	2936T234	00000
				16.125"	410	16	19 5/16"	4 1/4"	6,725	17"	1	Galvanized Steel	18 7/8"	2 1/2"	1/4"	2	2936T235	00000

Pivoting Loop Pipe Hangers

Tilt

Secure pipe overhead and allow it to tilt or rotate as needed. These pipe hangers reduce stress on joints and keep pipe aligned, even when it shifts. Attach these hangers to beams or ceilings with threaded rod.

15° Tilt—Swing up and down to accommodate slight misalignments between the pipe and mounting surface caused by vibration, thermal expansion, or shifting loads. Also known as Clevis Hangers.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture, but won't stand up to chemicals.

Rubber-Coated Steel—Prevent wear from metal-to-metal contact and moisture.

304 Stainless Steel—Withstand mild chemicals and solvents and won't rust in wet environments.

316 Stainless Steel—Our most corrosion-resistant metal pipe hangers. These won’t degrade when exposed to harsh weather, salt water, and most chemicals.

	ID
	Inch	Metric, mm	For Pipe Size	For Thread Size	Wt. Cap., lb.	Mounting Hole Dia.		Each
15° Tilt







				Steel

				10 3/4"	273	10	7/8"-9	3,600	15/16"	3037T27	000000


				12 3/4"	324	12	7/8"-9	3,800	15/16"	3037T28	00000




						Zinc-Plated Steel

						10 3/4"	273	10	7/8"-9	3,600	7/8"	3037T75	00000


						12 3/4"	324	12	7/8"-9	3,800	7/8"	3037T76	00000




								Rubber-Coated Steel

								10 3/4"	273	10	7/8"-9	3,600	15/16"	3309T754	00000


								12 3/4"	324	12	7/8"-9	3,800	15/16"	3309T755	00000




										304 Stainless Steel

										10 3/4"	273	10	7/8"-9	3,600	15/16"	3309T654	000000


										12 3/4"	324	12	7/8"-9	3,800	15/16"	3309T655	000000




												316 Stainless Steel

												10 3/4"	273	10	7/8"-9	3,600	15/16"	3309T731	000000