Square U-Bolts | McMaster-Carr

	System of Measurement System of Measurement

Inch

	Inside Width Inside Width

2 1/8"

3 1/8"

	Height Height

	Thread Size Thread Size

3/8"-16

1/2"-13

	Material Material

Steel

Stainless Steel

	Finish Finish

Zinc Plated

Galvanized

Black Oxide

	Center-to-Center Center-to-Center

	Thread Length Thread Length

	Leg Diameter Leg Diameter

3/8"

1/2"

	Washer Material Washer Material

Steel

Stainless Steel

	Nut Material Nut Material

Steel

Stainless Steel

	Mount Type Mount Type

	Threaded

	Capacity Capacity

1,000 to 1,999 lbs.

2,000 to 2,999 lbs.

Not Rated

	Nut Style Nut Style

Hex Nut

	Includes Mounting Plate Includes Mounting Plate

	Number of Nuts Included Number of Nuts Included

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

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

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

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170 Products

Selecting U-Bolts Using Pipe, Conduit, or Tubing Trade Size

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

Black-oxide steel U-bolts have mild corrosion resistance

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

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

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

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

Black-Oxide Steel
Inside Wd.	Ht.	Thread Lg.	Capacity, lbs.	Ctr.-to-Ctr.	No. of Nuts Included	No. of Washers Included		Each
3/8"-16 Thread Size
2"	2 5/8"	1 1/2"	1,075	2 3/8"	2	2	00000000	00000
2"	4 5/8"	3"	1,075	2 3/8"	2	2	00000000	0000
2"	6 5/8"	3 3/4"	1,075	2 3/8"	2	2	00000000	0000
3"	2 5/8"	1 1/2"	1,075	3 3/8"	2	2	00000000	0000
3"	4 5/8"	3"	1,075	3 3/8"	2	2	00000000	0000
3"	6 5/8"	3 3/4"	1,075	3 3/8"	2	2	00000000	0000
4"	2 5/8"	1 1/2"	1,075	4 3/8"	2	2	00000000	0000
4"	4 5/8"	3"	1,075	4 3/8"	2	2	00000000	0000
4"	6 5/8"	3 3/4"	1,075	4 3/8"	2	2	00000000	0000
5"	4 5/8"	1 1/2"	1,075	5 3/8"	2	2	00000000	0000
5"	6 5/8"	3"	1,075	5 3/8"	2	2	00000000	0000
5"	8 5/8"	3 3/4"	1,075	5 3/8"	2	2	00000000	0000
6"	4 5/8"	3"	1,075	6 3/8"	2	2	00000000	0000
6"	6 5/8"	3 3/4"	1,075	6 3/8"	2	2	00000000	0000
6"	8 5/8"	5 5/8"	1,075	6 3/8"	2	2	00000000	0000
7"	6 5/8"	3"	1,075	7 3/8"	2	2	00000000	0000
7"	8 5/8"	3 3/4"	1,075	7 3/8"	2	2	00000000	0000
7"	10 5/8"	5 5/8"	1,075	7 3/8"	2	2	00000000	0000
1/2"-13 Thread Size
2"	2 5/8"	1 1/2"	2,000	2 1/2"	2	2	00000000	0000
2"	4 5/8"	3"	2,000	2 1/2"	2	2	00000000	0000
2"	6 5/8"	3 3/4"	2,000	2 1/2"	2	2	00000000	00000
3"	2 5/8"	1 1/2"	2,000	3 1/2"	2	2	00000000	0000
3"	4 5/8"	3"	2,000	3 1/2"	2	2	00000000	0000
3"	6 5/8"	3 3/4"	2,000	3 1/2"	2	2	00000000	00000
4"	2 5/8"	1 1/2"	2,000	4 1/2"	2	2	00000000	0000
4"	4 5/8"	3"	2,000	4 1/2"	2	2	00000000	00000
4"	6 5/8"	3 3/4"	2,000	4 1/2"	2	2	00000000	00000
5"	4 5/8"	1 1/2"	2,000	5 1/2"	2	2	00000000	00000
5"	6 5/8"	3"	2,000	5 1/2"	2	2	00000000	00000
5"	8 5/8"	3 3/4"	2,000	5 1/2"	2	2	00000000	00000
6"	4 5/8"	3"	2,000	6 1/2"	2	2	00000000	00000
6"	6 5/8"	3 3/4"	2,000	6 1/2"	2	2	00000000	00000
6"	8 5/8"	5 5/8"	2,000	6 1/2"	2	2	00000000	00000
7"	6 5/8"	3"	2,000	7 1/2"	2	2	00000000	00000
7"	8 5/8"	3 3/4"	2,000	7 1/2"	2	2	00000000	00000
7"	10 5/8"	5 5/8"	2,000	7 1/2"	2	2	00000000	00000
8"	4 5/8"	3"	2,000	8 1/2"	2	2	00000000	00000
8"	6 5/8"	3 3/4"	2,000	8 1/2"	2	2	00000000	00000
8"	8 5/8"	5 5/8"	2,000	8 1/2"	2	2	00000000	00000
Zinc-Plated Steel
3/8"-16 Thread Size
2"	2 5/8"	1 1/2"	1,075	2 3/8"	2	2	0000000	0000
2"	4 5/8"	3"	1,075	2 3/8"	2	2	0000000	0000
2"	6 5/8"	3 3/4"	1,075	2 3/8"	2	2	0000000	0000
2 1/8"	3"	1"	Not Rated	2 1/2"	2	2	00000000	0000
3"	2 5/8"	1 1/2"	1,075	3 3/8"	2	2	0000000	0000
3"	4 5/8"	3"	1,075	3 3/8"	2	2	0000000	0000
3"	6 5/8"	3 3/4"	1,075	3 3/8"	2	2	0000000	0000
3 1/8"	4"	1 1/2"	Not Rated	3 1/2"	2	2	00000000	0000
4"	2 5/8"	1 1/2"	1,075	4 3/8"	2	2	0000000	0000
4"	4 5/8"	3"	1,075	4 3/8"	2	2	0000000	0000
4"	6 5/8"	3 3/4"	1,075	4 3/8"	2	2	0000000	0000
5"	4 5/8"	1 1/2"	1,075	5 3/8"	2	2	0000000	0000
5"	6 5/8"	3"	1,075	5 3/8"	2	2	0000000	0000
5"	8 5/8"	3 3/4"	1,075	5 3/8"	2	2	0000000	0000
6"	4 5/8"	3"	1,075	6 3/8"	2	2	0000000	0000
6"	6 5/8"	3 3/4"	1,075	6 3/8"	2	2	0000000	0000
6"	8 5/8"	5 5/8"	1,075	6 3/8"	2	2	0000000	0000
7"	6 5/8"	3"	1,075	7 3/8"	2	2	0000000	0000
7"	8 5/8"	3 3/4"	1,075	7 3/8"	2	2	0000000	0000
7"	10 5/8"	5 5/8"	1,075	7 3/8"	2	2	0000000	0000
8"	4 5/8"	3"	1,075	8 3/8"	2	2	0000000	0000
8"	6 5/8"	3 3/4"	1,075	8 3/8"	2	2	0000000	0000
8"	8 5/8"	5 5/8"	1,075	8 3/8"	2	2	0000000	0000
1/2"-13 Thread Size
2"	2 5/8"	1 1/2"	2,000	2 1/2"	2	2	00000000	0000
2"	4 5/8"	3"	2,000	2 1/2"	2	2	00000000	0000
2"	6 5/8"	3 3/4"	2,000	2 1/2"	2	2	00000000	00000
2 1/8"	5 1/2"	2 1/2"	Not Rated	2 5/8"	2	2	00000000	0000
2 1/8"	7 1/2"	2 1/2"	Not Rated	2 5/8"	2	2	00000000	0000
3"	2 5/8"	1 1/2"	2,000	3 1/2"	2	2	00000000	0000
3"	4 5/8"	3"	2,000	3 1/2"	2	2	00000000	0000
3"	6 5/8"	3 3/4"	2,000	3 1/2"	2	2	00000000	00000
3 1/8"	5 1/2"	2 1/2"	Not Rated	3 5/8"	2	2	00000000	0000
4"	2 5/8"	1 1/2"	2,000	4 1/2"	2	2	00000000	0000
4"	4 5/8"	3"	2,000	4 1/2"	2	2	00000000	0000
4"	6 5/8"	3 3/4"	2,000	4 1/2"	2	2	00000000	00000
5"	4 5/8"	1 1/2"	2,000	5 1/2"	2	2	00000000	00000
5"	6 5/8"	3"	2,000	5 1/2"	2	2	00000000	00000
5"	8 5/8"	3 3/4"	2,000	5 1/2"	2	2	00000000	00000
6"	4 5/8"	3"	2,000	6 1/2"	2	2	00000000	00000
6"	6 5/8"	3 3/4"	2,000	6 1/2"	2	2	00000000	00000
6"	8 5/8"	5 5/8"	2,000	6 1/2"	2	2	00000000	00000
7"	6 5/8"	3"	2,000	7 1/2"	2	2	00000000	00000
7"	8 5/8"	3 3/4"	2,000	7 1/2"	2	2	00000000	00000