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Center-to-Center Center-to-Center |
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Mounting Plate Material Mounting Plate Material |
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Nut Material Nut Material |
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Includes Mounting Plate Includes Mounting Plate |
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Mount Type Mount Type |
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 | Threaded |
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Mounting Plate Length Mounting Plate Length |
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Mounting Plate Width Mounting Plate Width |
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Mounting Plate Thickness Mounting Plate Thickness |
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For Rigid Conduit Trade Size For Rigid Conduit Trade Size |
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Finish Finish |
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Selecting U-Bolts Using Pipe, Conduit, or Tubing Trade Size
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Clamping U-Bolts
With Steel and Stainless Steel Mounting Plate
With Plastic Mounting Plate
Also known as muffler clamps, these U-bolts have a rounded mounting plate that fully surrounds pipe, conduit, and tubing for a secure fit. Stronger than routing clamps and hangers, U-bolts support heavy pipe, tube, and conduit from ceilings, walls, and poles.
Zinc-plated steel U-bolts have good corrosion resistance in most environments. Chrome-plated steel U-bolts are more corrosion resistant than zinc-plated steel U-bolts. 304 stainless steel U-bolts have excellent corrosion resistance and good chemical resistance.
U-bolts with four nuts allow you to secure the U-bolt from the top and the bottom.
For technical drawings and 3-D models, click on a part number.
ID | Thread | Mounting Plate | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | Metric, mm | For Pipe Size | Ht. | Lg. | Pitch, mm | Ctr.-to-Ctr. | Material | Color | Lg. | Wd. | Thick. | No. of Nuts Included | Temp. Range, °F | Pkg. Qty. | Pkg. | |
Steel | ||||||||||||||||
1/4"-20 Thread Size  | ||||||||||||||||
| 9/16" | 14 | 1/4 | 1 7/16" | 3/4" | __ | 13/16" | Steel | __ | 1 9/16" | 7/16" | 11/32" | 2 | __ | 10 | 00000000 | 000000 |
| 11/16" | 17 | 3/8 | 1 7/16" | 3/4" | __ | 1" | Steel | __ | 1 9/16" | 7/16" | 9/32" | 2 | __ | 10 | 00000000 | 00000 |
| 7/8" | 22 | 1/2 | 1 7/16" | 3/4" | __ | 1 1/16" | Steel | __ | 1 9/16" | 3/8" | 3/16" | 2 | __ | 10 | 00000000 | 00000 |
| 1 1/8" | 29 | 3/4 | 1 1/2" | 3/4" | __ | 1 3/8" | Steel | __ | 1 13/16" | 7/16" | 3/16" | 2 | __ | 10 | 00000000 | 00000 |
5/16"-18 Thread Size | ||||||||||||||||
| 1 3/8" | 35 | __ | 2 1/16" | 1" | __ | 1 5/8" | Steel | __ | 2 5/16" | 9/16" | 9/32" | 2 | __ | 1 | 0000000 | 0000 |
| 1 7/16" | 37 | 1 | 2 1/8" | 1" | __ | 1 3/4" | Steel | __ | 2 1/2" | 9/16" | 9/32" | 2 | __ | 1 | 0000000 | 0000 |
| 1 5/8" | 41 | __ | 2 5/16" | 1" | __ | 1 7/8" | Steel | __ | 2 9/16" | 9/16" | 9/32" | 2 | __ | 1 | 0000000 | 0000 |
| 1 11/16" | 43 | __ | 2 1/2" | 1" | __ | 1 15/16" | Steel | __ | 2 3/4" | 9/16" | 11/32" | 2 | __ | 1 | 0000000 | 0000 |
| 1 3/4" | 44 | 1 1/4 | 2 9/16" | 1" | __ | 2 1/16" | Steel | __ | 2 15/16" | 5/8" | 5/16" | 2 | __ | 1 | 0000000 | 0000 |
| 1 15/16" | 49 | __ | 2 7/8" | 1" | __ | 2 3/16" | Steel | __ | 2 15/16" | 5/8" | 5/16" | 2 | __ | 1 | 0000000 | 0000 |
| 2" | 51 | 1 1/2 | 2 15/16" | 1" | __ | 2 5/16" | Steel | __ | 3" | 5/8" | 5/16" | 2 | __ | 1 | 0000000 | 0000 |
| 2 3/16" | 56 | __ | 3 1/16" | 1" | __ | 2 7/16" | Steel | __ | 3 3/16" | 5/8" | 9/32" | 2 | __ | 1 | 0000000 | 0000 |
| 2 1/4" | 57 | __ | 3 1/8" | 1" | __ | 2 9/16" | Steel | __ | 3 7/16" | 5/8" | 3/8" | 2 | __ | 1 | 0000000 | 0000 |
| 2 7/16" | 62 | 2 | 3 5/16" | 1" | __ | 2 11/16" | Steel | __ | 3 7/16" | 7/8" | 5/16" | 2 | __ | 1 | 0000000 | 0000 |
| 2 11/16" | 68 | __ | 3 9/16" | 1 1/4" | __ | 2 15/16" | Steel | __ | 3 11/16" | 7/8" | 5/16" | 2 | __ | 1 | 0000000 | 0000 |
3/8"-16 Thread Size | ||||||||||||||||
| 2 3/16" | 56 | __ | 3 11/16" | 1 1/2" | __ | 2 1/2" | Steel | __ | 3 1/8" | 5/8" | 23/32" | 2 | __ | 1 | 0000000 | 0000 |
| 2 7/16" | 62 | 2 | 3 13/16" | 1 1/2" | __ | 2 3/4" | Steel | __ | 3 3/8" | 5/8" | 23/32" | 2 | __ | 1 | 0000000 | 0000 |
| 2 11/16" | 68 | __ | 4 1/16" | 1 1/2" | __ | 3" | Steel | __ | 3 5/8" | 5/8" | 3/4" | 2 | __ | 1 | 0000000 | 0000 |
| 2 7/8" | 73 | 2 1/2 | 4 5/16" | 1 1/2" | __ | 3 1/4" | Steel | __ | 3 7/8" | 5/8" | 23/32" | 2 | __ | 1 | 0000000 | 0000 |
| 3 1/8" | 79 | __ | 4 9/16" | 1 1/2" | __ | 3 1/2" | Steel | __ | 4 1/8" | 5/8" | 11/16" | 2 | __ | 1 | 0000000 | 0000 |
| 3 7/16" | 87 | __ | 4 13/16" | 1 1/2" | __ | 3 3/4" | Steel | __ | 4 3/8" | 5/8" | 23/32" | 2 | __ | 1 | 0000000 | 0000 |
| 3 11/16" | 94 | 3 | 5 1/16" | 1 1/2" | __ | 4" | Steel | __ | 4 5/8" | 5/8" | 11/16" | 2 | __ | 1 | 0000000 | 0000 |
| 4 3/16" | 106 | 3 1/2 | 5 7/8" | 1 1/2" | __ | 4 1/2" | Steel | __ | 5 3/16" | 11/16" | 23/32" | 2 | __ | 1 | 0000000 | 0000 |
| 4 11/16" | 119 | 4 | 6 3/16" | 1 1/2" | __ | 5" | Steel | __ | 5 5/8" | 11/16" | 3/4" | 2 | __ | 1 | 0000000 | 0000 |
| 5 3/16" | 132 | 4 1/2 | 6 13/16" | 1 1/2" | __ | 5 1/2" | Steel | __ | 6 1/4" | 11/16" | 25/32" | 2 | __ | 1 | 0000000 | 0000 |
| 5 11/16" | 144 | 5 | 7 1/8" | 1 1/2" | __ | 6" | Steel | __ | 6 11/16" | 3/4" | 11/16" | 2 | __ | 1 | 0000000 | 0000 |
| 6 3/16" | 157 | __ | 7 1/2" | 1 1/2" | __ | 6 1/2" | Steel | __ | 7 3/16" | 3/4" | 13/16" | 2 | __ | 1 | 0000000 | 0000 |
| 7 3/16" | 183 | __ | 8 13/16" | 1 3/4" | __ | 7 1/2" | Steel | __ | 8 3/4" | 1" | 19/32" | 2 | __ | 1 | 00000000 | 00000 |
| 8 3/16" | 208 | __ | 9 11/16" | 1 3/4" | __ | 8 1/2" | Steel | __ | 9 3/4" | 1" | 19/32" | 2 | __ | 1 | 00000000 | 00000 |
Zinc-Plated Steel | ||||||||||||||||
1/4"-20 Thread Size | ||||||||||||||||
| 9/16" | 14 | 1/4 | 1 7/16" | 3/4" | __ | 13/16" | Zinc-Plated Steel | __ | 1 9/16" | 7/16" | 11/32" | 2 | __ | 10 | 00000000 | 00000 |
| 11/16" | 17 | 3/8 | 1 7/16" | 3/4" | __ | 1" | Zinc-Plated Steel | __ | 1 9/16" | 7/16" | 9/32" | 2 | __ | 10 | 00000000 | 00000 |
| 7/8" | 22 | 1/2 | 1 7/16" | 3/4" | __ | 1 1/16" | Zinc-Plated Steel | __ | 1 9/16" | 3/8" | 3/16" | 2 | __ | 10 | 00000000 | 00000 |
| 1 1/8" | 29 | 3/4 | 1 1/2" | 3/4" | __ | 1 3/8" | Zinc-Plated Steel | __ | 1 13/16" | 7/16" | 3/16" | 2 | __ | 10 | 00000000 | 00000 |
5/16"-18 Thread Size | ||||||||||||||||
| 1 3/8" | 35 | __ | 2 1/16" | 1" | __ | 1 5/8" | Zinc-Plated Steel | __ | 2 5/16" | 9/16" | 9/32" | 2 | __ | 1 | 0000000 | 0000 |
| 1 7/16" | 37 | 1 | 2 1/8" | 1" | __ | 1 3/4" | Zinc-Plated Steel | __ | 2 1/2" | 9/16" | 9/32" | 2 | __ | 1 | 0000000 | 0000 |
| 1 5/8" | 41 | __ | 2 5/16" | 1" | __ | 1 7/8" | Zinc-Plated Steel | __ | 2 9/16" | 9/16" | 9/32" | 2 | __ | 1 | 0000000 | 0000 |
| 1 11/16" | 43 | __ | 2 1/2" | 1" | __ | 1 15/16" | Zinc-Plated Steel | __ | 2 3/4" | 9/16" | 11/32" | 2 | __ | 1 | 0000000 | 0000 |
| 1 3/4" | 44 | 1 1/4 | 2 9/16" | 1" | __ | 2 1/16" | Zinc-Plated Steel | __ | 2 15/16" | 5/8" | 5/16" | 2 | __ | 1 | 0000000 | 0000 |
| 1 15/16" | 49 | __ | 2 7/8" | 1" | __ | 2 3/16" | Zinc-Plated Steel | __ | 2 15/16" | 5/8" | 5/16" | 2 | __ | 1 | 0000000 | 0000 |
| 2" | 51 | 1 1/2 | 2 15/16" | 1" | __ | 2 5/16" | Zinc-Plated Steel | __ | 3" | 5/8" | 5/16" | 2 | __ | 1 | 0000000 | 0000 |
| 2 3/16" | 56 | __ | 3 1/16" | 1" | __ | 2 7/16" | Zinc-Plated Steel | __ | 3 3/16" | 5/8" | 9/32" | 2 | __ | 1 | 0000000 | 0000 |
| 2 1/4" | 57 | __ | 3 1/8" | 1" | __ | 2 9/16" | Zinc-Plated Steel | __ | 3 7/16" | 5/8" | 3/8" | 2 | __ | 1 | 0000000 | 0000 |
| 2 7/16" | 62 | 2 | 3 5/16" | 1" | __ | 2 11/16" | Zinc-Plated Steel | __ | 3 7/16" | 7/8" | 5/16" | 2 | __ | 1 | 0000000 | 0000 |
| 2 11/16" | 68 | __ | 3 9/16" | 1 1/4" | __ | 2 15/16" | Zinc-Plated Steel | __ | 3 11/16" | 7/8" | 5/16" | 2 | __ | 1 | 0000000 | 0000 |
3/8"-16 Thread Size | ||||||||||||||||
| 2 3/16" | 56 | __ | 3 11/16" | 1 1/2" | __ | 2 1/2" | Zinc-Plated Steel | __ | 3 1/8" | 5/8" | 23/32" | 2 | __ | 1 | 0000000 | 0000 |
Square U-Bolts
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)