Rubber-Coated U-Bolts | McMaster-Carr

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Rubber

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DFARS Specialty Metals

63 Products

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
1/4"-20 Threads



		0.9375"	24	1/2	3 1/4"	2 3/8"	1 3/16"	Rubber	2 3/4"	1"	1/8"	4	-65 to 250	30555T61	00000	30555T62	000000


		1.125"	29	3/4	3 1/8"	2 1/2"	1 3/8"	Rubber	2 3/4"	1"	1/8"	4	-65 to 250	30555T31	0000	30555T41	00000
		1.375"	35	1	3 3/8"	2 3/8"	1 5/8"	Rubber	3"	1"	1/8"	4	-65 to 250	30555T32	0000	30555T42	00000


		3/8"-16 Threads



				1.6875"	43	1 1/4	3 11/16"	2 1/2"	2 1/16"	Rubber	4 1/4"	1 1/4"	1/8"	4	-65 to 250	30555T23	0000	30555T53	00000


				2"	51	1 1/2	3 15/16"	2 1/2"	2 3/8"	Rubber	4 1/4"	1 1/4"	1/8"	4	-65 to 250	30555T33	0000	30555T43	00000
				2.4375"	62	2	4 7/16"	2 1/2"	2 13/16"	Rubber	4 1/4"	1 1/4"	1/8"	4	-65 to 250	30555T34	0000	30555T44	00000


				1/2"-13 Threads



						2.9375"	75	2 1/2	5 3/16"	3"	3 7/16"	Rubber	7 5/8"	2"	1/8"	4	-65 to 250	30555T35	00000	30555T45	00000


						3.5625"	90	3	5 3/4"	3"	4 1/16"	Rubber	7 1/4"	2"	1/8"	4	-65 to 250	30555T36	00000	30555T46	00000
						4.5625"	116	4	6 3/4"	3"	5 1/16"	Rubber	8 1/4"	2"	1/8"	4	-65 to 250	30555T37	00000	30555T47	00000
						5.625"	143	5	7 3/4"	3"	6 1/8"	Rubber	8"	2"	1/8"	4	-65 to 250	30555T24	00000	30555T54	00000


						5/8"-11 Threads



								6.75"	171	6	9 7/16"	3 3/4"	7 3/8"	Rubber	9 3/4"	2 1/4"	1/8"	4	-65 to 250	30555T38	00000	30555T48	00000


								8.75"	222	8	11 1/2"	3 3/4"	9 3/8"	Rubber	11 3/4"	2 1/4"	1/8"	4	-65 to 250	30555T39	00000	30555T49	00000


								3/4"-10 Threads



										10.875"	276	10	13 3/4"	4"	11 5/8"	Rubber	14 1/4"	2 1/2"	1/8"	4	-65 to 250	30555T21	00000	30555T51	000000


										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	00000	30555T52	000000


												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


												1"-8 Threads



18.125"	460													18	21 5/8"	4 1/4"	19 1/8"	Rubber	22 1/4"	2 3/4"	1/8"	4	-65 to 250	30555T67	000000	30555T68	000000


20.125"	511													20	23 5/8"	4 3/4"	21 1/8"	Rubber	21 1/8"	2 3/4"	1/8"	4	-65 to 250	30555T69	000000	———	0
24.125"	613													24	27 5/8"	4 3/4"	25 1/8"	Rubber	28 1/4"	2 3/4"	1/8"	4	-65 to 250	30555T72	000000	30555T73	000000
30.125"	765													30	33 5/8"	4 3/4"	31 1/8"	Rubber	34"	2 3/4"	1/8"	4	-65 to 250	30555T74	000000	———	0

Rubber-Cushioned Square U-Bolts

Reduce vibration and prevent metal-to-metal corrosion on flat-bottomed objects such as strut channel and small duct. Secure with hex nuts (sold separately).

Zinc-Plated Steel—Zinc-plated 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.

						Temp.		Zinc-Plated Steel		304 Stainless Steel
	Inside Wd.	Ht.	Thread Lg.	Wt. Cap.	Ctr.-to-Ctr.	Min.	Max., ° F		Each		Each
1/2"-13 Threads



		2"	2 5/8"	1"	Not Rated	2 1/2"	Not Rated	435	3060T11	000000	3060T24	000000


		2"	4 5/8"	2"	Not Rated	2 1/2"	Not Rated	435	3060T12	00000	3060T25	00000
		2"	6 5/8"	3"	Not Rated	2 1/2"	Not Rated	435	3060T13	00000	3060T26	00000
		4"	2 5/8"	1"	Not Rated	4 1/2"	Not Rated	435	3060T14	00000	3060T27	00000
		4"	4 5/8"	2"	Not Rated	4 1/2"	Not Rated	435	3060T15	00000	3060T28	00000
		4"	6 5/8"	3"	Not Rated	4 1/2"	Not Rated	435	3060T16	00000	3060T29	00000
		6"	4 5/8"	2"	Not Rated	6 1/2"	Not Rated	435	3060T17	00000	3060T31	00000
		6"	6 5/8"	3"	Not Rated	6 1/2"	Not Rated	435	3060T18	00000	3060T32	00000
		6"	8 5/8"	4"	Not Rated	6 1/2"	Not Rated	435	3060T19	00000	3060T38	00000
		8"	4 5/8"	2"	Not Rated	8 1/2"	Not Rated	435	3060T21	00000	3060T34	00000
		8"	6 5/8"	3"	Not Rated	8 1/2"	Not Rated	435	3060T22	00000	3060T35	00000


		8"	8 5/8"	4"	Not Rated	8 1/2"	Not Rated	435	3060T23	00000	3060T36	00000

Anti-Rattle Hitch Clamps

Stabilize your hitch for safe, quiet towing—these clamps strengthen the joint between the hitch insert and receiver to prevent rattling and swaying. Slide the U-bolt over the hitch insert and attach the mounting plate to the bottom using the included nuts. Tighten until the mounting plate presses firmly against the hitch insert and receiver.

For Hitch Receiver Size	Lg.	Wd.	Ht.	Inside Wd.	Material	Color	Mounting Hardware Included	Mount Type	Thread Lg.		Each
2 1/2" Square	4 1/2"	2 7/8"	5 3/16"	2 3/4"	Rubber-Coated Steel	Black	Yes	Threaded	2 1/16"	9385N102	000000