Black Oxide U-Bolts | McMaster-Carr

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System of Measurement

Height

Center-to-Center

Thread Size

Pipe Size

Inside Width

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Leg Diameter

Thread Length

Material

Mount Type

Weight Capacity

1,000 lb. to 1,999 lb.

2,000 lb. to 2,999 lb.

3,000 lb. to 3,999 lb.

4,000 lb. or greater

Number of Nuts Included

Nut Type

Hex

Nut Material

Steel

Includes Mounting Plate

Yes

Mounting Plate Finish

Black Oxide

Mounting Plate Material

Steel

Export Control Classification Number (ECCN)

EAR99

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

RoHS

Compliant

DFARS Specialty Metals

Exempt

REACH

Compliant

For Rigid Conduit Trade Size

142 Products

U-Bolts


	Black-Oxide 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.

	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







				1/4"-20 Threads

				0.5625"	14	1/4	1 1/4"	3/4"	425	13/16"	2	5	3201T28	00000	5	3201T927	00000


				0.75"	19	3/8	1 1/4"	5/8"	425	1"	2	5	3201T11	0000	5	3201T911	0000
				0.75"	19	3/8	2 1/4"	1 1/2"	425	1"	2	5	3201T31	0000	5	3201T911	0000
				1"	25	—	1 3/4"	1"	425	1 1/4"	2	5	3201T12	0000	5	3201T912	0000
				1.125"	29	3/4	2"	1"	425	1 3/8"	2	5	3201T13	0000	5	3201T913	0000
				1.25"	32	—	2 1/4"	1 1/4"	425	1 1/2"	2	5	3201T29	0000	5	3201T291	0000
				1.5"	38	1	2 3/4"	1 3/8"	425	1 3/4"	2	5	3201T14	0000	5	3201T914	0000
				1.75"	44	1 1/4	3"	1 3/8"	425	2"	2	5	3201T15	0000	5	3201T915	0000
				2"	51	1 1/2	3 1/4"	1 3/8"	425	2 1/4"	2	5	3201T16	0000	5	3201T916	0000




						5/16"-18 Threads

						1"	25	—	2 3/16"	1 3/8"	600	1 5/16"	2	5	3201T32	0000	5	3201T931	0000


						1.375"	35	1	2 3/16"	1"	600	1 11/16"	2	1	3201T17	0000	5	3201T917	0000
						1.5"	38	1	2 3/16"	1"	600	1 13/16"	2	1	3201T33	0000	5	3201T331	0000
						1.75"	44	1 1/4	2 11/16"	1 1/8"	600	2 1/16"	2	1	3201T34	0000	5	3201T933	0000
						2"	51	1 1/2	2 11/16"	1"	600	2 5/16"	2	1	3201T18	0000	5	3201T918	0000
						2.5"	64	2	3 3/16"	1"	600	2 13/16"	2	1	3201T19	0000	5	3201T919	0000
						3"	76	2 1/2	3 11/16"	1"	600	3 5/16"	2	1	3201T35	0000	5	3201T934	0000




								3/8"-16 Threads

								1"	25	—	2 1/4"	1 1/4"	1,075	1 3/8"	2	1	3201T36	0000	5	3201T935	0000


								1.25"	32	—	2 1/4"	1 1/4"	1,075	1 5/8"	2	1	3201T37	0000	5	3201T936	0000
								1.5"	38	1	2 1/2"	1 1/4"	1,075	1 7/8"	2	1	3201T21	0000	5	3201T921	0000
								1.75"	44	1 1/4	2 3/4"	1 1/8"	1,075	2 1/8"	2	1	3201T38	0000	5	3201T937	0000
								2"	51	1 1/2	2 5/8"	1 1/4"	1,075	2 3/8"	2	1	3201T22	0000	5	3201T922	0000
								2.5"	64	2	3 1/8"	1 1/4"	1,075	2 7/8"	2	1	3201T23	0000	5	3201T923	0000
								3"	76	2 1/2	3 5/8"	1 1/4"	1,075	3 3/8"	2	1	3201T39	0000	5	3201T938	0000
								3.5"	89	3	4 1/8"	1 1/4"	1,075	3 7/8"	2	1	3201T24	0000	5	3201T924	0000




										1/2"-13 Threads

										3"	76	2 1/2	4 1/2"	1 5/8"	2,000	3 1/2"	2	1	3201T41	0000	5	3201T939	0000


										3.5"	89	3	5"	1 1/2"	2,000	4"	2	1	3201T25	0000	1	3201T925	0000
										4"	102	3 1/2	5 1/2"	1 1/2"	2,000	4 1/2"	2	1	3201T42	0000	1	3201T941	0000
										4.5"	114	4	6"	1 1/2"	2,000	5"	2	1	3201T26	0000	1	3201T926	0000
										5.625"	143	5	7 1/4"	2"	2,000	6 1/8"	2	1	3201T43	0000	1	3201T431	0000
6.75"										171	6	8 3/8"	2"	2,000	7 1/4"	2	1	3201T27	0000	1	3201T271	0000
8.75"	222									8	10 3/8"	2"	2,000	9 1/4"	2	1	3201T44	00000	1	3201T441	0000




		5/8"-11 Threads

		6.75"	171							6	9 1/2"	3 3/4"	3,225	7 3/8"	2	1	3201T117	00000	1	3201T171	00000


		8.75"	222							8	11 1/8"	3 3/4"	3,225	9 3/8"	2	1	3201T118	00000	1	3201T181	00000




										3/4"-10 Threads

										10.875"	—	10	13 13/16"	4"	4,825	11 5/8"	2	1	3201T112	00000	1	3201T121	00000




				7/8"-9 Threads

				12.875"	327							12	16 1/16"	4 1/4"	6,725	13 3/4"	2	1	3201T113	00000	1	3201T131	00000


				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




												1"-8 Threads

												18.125"	460	18	21 11/16"	4 3/4"	8,850	19 1/8"	2	1	3201T116	000000	1	3201T161	00000

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.

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

	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
Black-Oxide Steel







				1/4"-20 Threads

				0.5625"	14	1/4	1 1/4"	3/4"	425	13/16"	1	Black-Oxide Steel	1 7/16"	3/4"	3/32"	2	3201T45	00000


				0.75"	19	3/8	1 1/4"	5/8"	425	1"	1	Black-Oxide Steel	1 5/8"	3/4"	3/32"	2	3201T46	0000
				0.75"	19	3/8	2 1/4"	1 1/2"	425	1"	1	Black-Oxide Steel	1 5/8"	3/4"	3/32"	2	3201T47	0000
				1"	25	—	1 3/4"	1"	425	1 1/4"	1	Black-Oxide Steel	1 7/8"	3/4"	3/32"	2	3201T48	0000
				1.125"	29	3/4	2"	1"	425	1 3/8"	1	Black-Oxide Steel	2"	3/4"	3/32"	2	3201T49	0000
				1.25"	32	—	2 1/4"	1 1/4"	425	1 1/2"	1	Black-Oxide Steel	2 1/8"	3/4"	3/32"	2	3201T51	0000
				1.5"	38	1	2 3/4"	1 3/8"	425	1 3/4"	1	Black-Oxide Steel	2 3/8"	3/4"	3/32"	2	3201T52	0000
				1.75"	44	1 1/4	3"	1 3/8"	425	2"	1	Black-Oxide Steel	2 5/8"	3/4"	3/32"	2	3201T53	0000
				2"	51	1 1/2	3 1/4"	1 3/8"	425	2 1/4"	1	Black-Oxide Steel	2 7/8"	3/4"	3/32"	2	3201T54	0000




						5/16"-18 Threads

						1"	25	—	2 3/16"	1 3/8"	600	1 5/16"	1	Black-Oxide Steel	2 1/16"	3/4"	3/32"	2	3201T55	0000


						1.375"	35	1	2 3/16"	1"	600	1 11/16"	1	Black-Oxide Steel	2 7/16"	3/4"	3/32"	2	3201T56	0000
						1.5"	38	1	2 3/16"	1"	600	1 13/16"	1	Black-Oxide Steel	2 9/16"	3/4"	3/32"	2	3201T57	0000
						1.75"	44	1 1/4	2 11/16"	1 1/8"	600	2 1/16"	1	Black-Oxide Steel	2 13/16"	3/4"	3/32"	2	3201T58	0000
						2"	51	1 1/2	2 11/16"	1"	600	2 5/16"	1	Black-Oxide Steel	3 1/16"	3/4"	3/32"	2	3201T59	0000
						2.5"	64	2	3 3/16"	1"	600	2 13/16"	1	Black-Oxide Steel	3 9/16"	3/4"	3/32"	2	3201T61	0000
						3"	76	2 1/2	3 11/16"	1"	600	3 5/16"	1	Black-Oxide Steel	4 1/16"	3/4"	3/32"	2	3201T62	0000




								3/8"-16 Threads

								1"	25	—	2 1/4"	1 1/4"	1,075	1 3/8"	1	Black-Oxide Steel	2 1/4"	1"	1/8"	2	3201T63	0000


								1.25"	32	—	2 1/4"	1 1/4"	1,075	1 5/8"	1	Black-Oxide Steel	2 1/2"	1"	1/8"	2	3201T64	0000
								1.5"	38	1	2 1/2"	1 1/4"	1,075	1 7/8"	1	Black-Oxide Steel	2 3/4"	1"	1/8"	2	3201T65	0000
								1.75"	44	1 1/4	2 3/4"	1 1/8"	1,075	2 1/8"	1	Black-Oxide Steel	3"	1"	1/8"	2	3201T66	0000
								2"	51	1 1/2	2 5/8"	1 1/4"	1,075	2 3/8"	1	Black-Oxide Steel	3 1/4"	1"	1/8"	2	3201T67	0000
								2.5"	64	2	3 1/8"	1 1/4"	1,075	2 7/8"	1	Black-Oxide Steel	3 3/4"	1"	1/8"	2	3201T68	0000
								3"	76	2 1/2	3 5/8"	1 1/4"	1,075	3 3/8"	1	Black-Oxide Steel	4 1/4"	1"	1/8"	2	3201T69	0000
								3.5"	89	3	4 1/8"	1 1/4"	1,075	3 7/8"	1	Black-Oxide Steel	4 3/4"	1"	1/8"	2	3201T71	0000




										1/2"-13 Threads

										3"	76	2 1/2	4 1/2"	1 5/8"	2,000	3 1/2"	1	Black-Oxide Steel	4 5/8"	1"	1/8"	2	3201T72	0000


										3.5"	89	3	5"	1 1/2"	2,000	4"	1	Black-Oxide Steel	5 1/8"	1"	1/8"	2	3201T73	0000
										4"	102	3 1/2	5 1/2"	1 1/2"	2,000	4 1/2"	1	Black-Oxide Steel	5 5/8"	1"	1/8"	2	3201T74	0000
										4.5"	114	4	6"	1 1/2"	2,000	5"	1	Black-Oxide Steel	6 1/8"	1"	1/8"	2	3201T75	0000

Square U-Bolts

Suspend and route flat-bottomed objects such as strut channel and small duct.

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

								Black-Oxide Steel
	Inside Wd.	Ht.	Thread Lg.	Wt. Cap., lb.	Ctr.-to-Ctr.	No. of Nuts Included	No. of Washers Included		Each
3/8"-16 Threads



		2"	2 5/8"	1 1/2"	1,075	2 3/8"	2	2	3060T134	00000


		2"	4 5/8"	3"	1,075	2 3/8"	2	2	3060T135	0000
		2"	6 5/8"	3 3/4"	1,075	2 3/8"	2	2	3060T136	0000
		3"	2 5/8"	1 1/2"	1,075	3 3/8"	2	2	3060T137	0000
		3"	4 5/8"	3"	1,075	3 3/8"	2	2	3060T138	0000
		3"	6 5/8"	3 3/4"	1,075	3 3/8"	2	2	3060T139	0000
		4"	2 5/8"	1 1/2"	1,075	4 3/8"	2	2	3060T141	0000
		4"	4 5/8"	3"	1,075	4 3/8"	2	2	3060T142	0000
		4"	6 5/8"	3 3/4"	1,075	4 3/8"	2	2	3060T143	0000
		5"	4 5/8"	1 1/2"	1,075	5 3/8"	2	2	3060T144	0000
		5"	6 5/8"	3"	1,075	5 3/8"	2	2	3060T145	0000


		5"	8 5/8"	3 3/4"	1,075	5 3/8"	2	2	3060T146	0000
		6"	4 5/8"	3"	1,075	6 3/8"	2	2	3060T147	0000
		6"	6 5/8"	3 3/4"	1,075	6 3/8"	2	2	3060T148	0000
		6"	8 5/8"	5 5/8"	1,075	6 3/8"	2	2	3060T149	0000
		7"	6 5/8"	3"	1,075	7 3/8"	2	2	3060T151	0000
		7"	8 5/8"	3 3/4"	1,075	7 3/8"	2	2	3060T152	0000
		7"	10 5/8"	5 5/8"	1,075	7 3/8"	2	2	3060T153	0000


		1/2"-13 Threads



				2"	2 5/8"	1 1/2"	2,000	2 1/2"	2	2	3060T157	0000


				2"	4 5/8"	3"	2,000	2 1/2"	2	2	3060T158	0000
				2"	6 5/8"	3 3/4"	2,000	2 1/2"	2	2	3060T159	00000
				3"	2 5/8"	1 1/2"	2,000	3 1/2"	2	2	3060T161	0000
				3"	4 5/8"	3"	2,000	3 1/2"	2	2	3060T162	00000
				3"	6 5/8"	3 3/4"	2,000	3 1/2"	2	2	3060T163	00000
				4"	2 5/8"	1 1/2"	2,000	4 1/2"	2	2	3060T164	0000
				4"	4 5/8"	3"	2,000	4 1/2"	2	2	3060T165	00000
				4"	6 5/8"	3 3/4"	2,000	4 1/2"	2	2	3060T166	00000
				5"	4 5/8"	1 1/2"	2,000	5 1/2"	2	2	3060T167	00000
				5"	6 5/8"	3"	2,000	5 1/2"	2	2	3060T168	00000


				5"	8 5/8"	3 3/4"	2,000	5 1/2"	2	2	3060T169	00000
				6"	4 5/8"	3"	2,000	6 1/2"	2	2	3060T171	00000
				6"	6 5/8"	3 3/4"	2,000	6 1/2"	2	2	3060T172	00000
				6"	8 5/8"	5 5/8"	2,000	6 1/2"	2	2	3060T173	00000
				7"	6 5/8"	3"	2,000	7 1/2"	2	2	3060T174	00000
				7"	8 5/8"	3 3/4"	2,000	7 1/2"	2	2	3060T175	00000
				7"	10 5/8"	5 5/8"	2,000	7 1/2"	2	2	3060T176	00000
				8"	4 5/8"	3"	2,000	8 1/2"	2	2	3060T177	00000
				8"	6 5/8"	3 3/4"	2,000	8 1/2"	2	2	3060T178	00000
				8"	8 5/8"	5 5/8"	2,000	8 1/2"	2	2	3060T179	00000

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.

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







			For 1/4"-20 Thread

			9/16"	1 7/16"	3/4"	3/32"	13/16"	5	3201T927	00000


			3/4"	1 5/8"	3/4"	3/32"	1"	5	3201T911	0000
			1"	1 7/8"	3/4"	3/32"	1 1/4"	5	3201T912	0000
			1 1/8"	2"	3/4"	3/32"	1 3/8"	5	3201T913	0000
			1 1/4"	2 1/8"	3/4"	3/32"	1 1/2"	5	3201T291	0000
			1 1/2"	2 3/8"	3/4"	3/32"	1 3/4"	5	3201T914	0000
			1 3/4"	2 5/8"	3/4"	3/32"	2"	5	3201T915	0000
			2"	2 7/8"	3/4"	3/32"	2 1/4"	5	3201T916	0000




					For 5/16"-18 Thread

					1"	2 1/16"	3/4"	3/32"	1 5/16"	5	3201T931	0000


					1 3/8"	2 7/16"	3/4"	3/32"	1 11/16"	5	3201T917	0000
					1 1/2"	2 9/16"	3/4"	3/32"	1 13/16"	5	3201T331	0000
					1 3/4"	2 13/16"	3/4"	3/32"	2 1/16"	5	3201T933	0000
					2"	3 1/16"	3/4"	3/32"	2 5/16"	5	3201T918	0000
					2 1/2"	3 9/16"	3/4"	3/32"	2 13/16"	5	3201T919	0000
					3"	4 1/16"	3/4"	3/32"	3 5/16"	5	3201T934	0000




							For 3/8"-16 Thread

							1"	2 1/4"	1"	1/8"	1 3/8"	5	3201T935	0000


							1 1/4"	2 1/2"	1"	1/8"	1 5/8"	5	3201T936	0000
							1 1/2"	2 3/4"	1"	1/8"	1 7/8"	5	3201T921	0000
							1 3/4"	3"	1"	1/8"	2 1/8"	5	3201T937	0000
							2"	3 1/4"	1"	1/8"	2 3/8"	5	3201T922	0000
							2 1/2"	3 3/4"	1"	1/8"	2 7/8"	5	3201T923	0000
							3"	4 1/4"	1"	1/8"	3 3/8"	5	3201T938	0000
							3 1/2"	4 3/4"	1"	1/8"	3 7/8"	5	3201T924	0000




									For 1/2"-13 Thread

									3"	4 5/8"	1"	1/8"	3 1/2"	5	3201T939	0000


									3 1/2"	5 1/8"	1"	1/8"	4"	1	3201T925	0000
									4"	5 5/8"	1"	1/8"	4 1/2"	1	3201T941	0000
									4 1/2"	6 1/8"	1"	1/8"	5"	1	3201T926	0000
									5 5/8"	7 3/4"	1"	1/8"	6 1/8"	1	3201T431	0000
									6 3/4"	8 3/8"	1"	1/8"	7 1/4"	1	3201T271	0000
8 3/4"									10 1/4"	1"	1/8"	9 1/4"	1	3201T441	0000




	For 5/8"-11 Thread

	6 3/4"	9 3/8"							1"	1/8"	7 3/8"	1	3201T171	00000


	8 3/4"	10 3/8"							1"	1/8"	9 3/8"	1	3201T181	00000




									For 3/4"-10 Thread

									10 7/8"	13 1/4"	1 5/8"	1/4"	11 5/8"	1	3201T121	00000




			For 7/8"-9 Thread

			12 7/8"	15 5/8"							2 1/2"	1/4"	13 1/4"	1	3201T131	00000


			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




											For 1"-8 Thread

											18 1/8"	21 1/4"	2 1/2"	1/4"	19 1/8"	1	3201T161	00000