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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
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. Chrome-plated steel U-bolts are more corrosion resistant than zinc-plated steel U-bolts.
ID | Thread | Mounting Plate | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | Metric, mm | For Pipe Size  | Ht. | Lg. | Ctr.-to-Ctr. | Material | Lg. | Wd. | Thick. | No. of Nuts Included | Pkg. Qty. | Pkg. | |
Chrome-Plated Steel | |||||||||||||
5/16"-18 Thread Size | |||||||||||||
| 1 5/16" | 33 | __ | 2" | 1" | 1 5/8" | Chrome-Plated Steel | 2 5/16" | 9/16" | 1/4" | 2 | 1 | 0000000 | 00000 |
| 1 7/16" | 37 | 1 | 2 1/8" | 1" | 1 3/4" | Chrome-Plated Steel | 2 7/16" | 9/16" | 1/4" | 2 | 1 | 0000000 | 0000 |
| 1 9/16" | 40 | __ | 2 1/4" | 1" | 1 7/8" | Chrome-Plated Steel | 2 9/16" | 9/16" | 1/4" | 2 | 1 | 0000000 | 0000 |
| 1 5/8" | 41 | __ | 2 1/2" | 1" | 1 15/16" | Chrome-Plated Steel | 2 11/16" | 9/16" | 11/32" | 2 | 1 | 0000000 | 0000 |
| 1 3/4" | 44 | 1 1/4 | 2 9/16" | 1" | 2 1/16" | Chrome-Plated Steel | 2 7/8" | 9/16" | 5/16" | 2 | 1 | 0000000 | 0000 |
| 1 7/8" | 48 | __ | 2 7/8" | 1" | 2 3/16" | Chrome-Plated Steel | 2 7/8" | 9/16" | 5/16" | 2 | 1 | 0000000 | 0000 |
| 2" | 51 | 1 1/2 | 2 7/8" | 1" | 2 5/16" | Chrome-Plated Steel | 3" | 9/16" | 5/16" | 2 | 1 | 0000000 | 0000 |
| 2 1/8" | 54 | __ | 3 1/16" | 1" | 2 7/16" | Chrome-Plated Steel | 3 1/8" | 9/16" | 1/4" | 2 | 1 | 0000000 | 0000 |
| 2 1/4" | 57 | __ | 3 1/8" | 1" | 2 9/16" | Chrome-Plated Steel | 3 3/8" | 9/16" | 3/8" | 2 | 1 | 0000000 | 0000 |
| 2 3/8" | 60 | 2 | 3 5/16" | 1" | 2 11/16" | Chrome-Plated Steel | 3 3/8" | 9/16" | 5/16" | 2 | 1 | 0000000 | 0000 |
| 2 5/8" | 67 | __ | 3 9/16" | 1 1/4" | 2 15/16" | Chrome-Plated Steel | 3 5/8" | 9/16" | 5/16" | 2 | 1 | 0000000 | 0000 |
3/8"-16 Thread Size | |||||||||||||
| 2 1/8" | 54 | __ | 3 11/16" | 1 1/2" | 2 1/2" | Chrome-Plated Steel | 3 1/8" | 5/8" | 11/16" | 2 | 1 | 0000000 | 0000 |
| 2 3/8" | 60 | 2 | 3 13/16" | 1 1/2" | 2 3/4" | Chrome-Plated Steel | 3 3/8" | 5/8" | 11/16" | 2 | 1 | 0000000 | 0000 |
| 2 5/8" | 67 | __ | 4 1/16" | 1 1/2" | 3" | Chrome-Plated Steel | 3 5/8" | 9/16" | 23/32" | 2 | 1 | 0000000 | 0000 |
| 2 7/8" | 73 | 2 1/2 | 4 5/16" | 1 1/2" | 3 1/4" | Chrome-Plated Steel | 3 7/8" | 5/8" | 11/16" | 2 | 1 | 0000000 | 0000 |
| 3 1/8" | 79 | __ | 4 9/16" | 1 1/2" | 3 1/2" | Chrome-Plated Steel | 4 1/8" | 5/8" | 21/32" | 2 | 1 | 0000000 | 0000 |
| 3 3/8" | 86 | __ | 4 13/16" | 1 1/2" | 3 3/4" | Chrome-Plated Steel | 4 5/16" | 9/16" | 11/16" | 2 | 1 | 0000000 | 0000 |
| 3 5/8" | 92 | 3 | 5 1/16" | 1 1/2" | 4" | Chrome-Plated Steel | 4 5/8" | 9/16" | 11/16" | 2 | 1 | 0000000 | 0000 |
| 4 1/8" | 105 | 3 1/2 | 5 7/8" | 1 1/2" | 4 1/2" | Chrome-Plated Steel | 5 1/8" | 5/8" | 11/16" | 2 | 1 | 0000000 | 0000 |
| 4 5/8" | 117 | 4 | 6 3/16" | 1 1/2" | 5" | Chrome-Plated Steel | 5 5/8" | 5/8" | 23/32" | 2 | 1 | 0000000 | 0000 |
| 5 1/8" | 130 | __ | 6 13/16" | 1 1/2" | 5 1/2" | Chrome-Plated Steel | 6 3/16" | 11/16" | 25/32" | 2 | 1 | 0000000 | 00000 |
| 5 5/8" | 143 | 5 | 7 1/8" | 1 1/2" | 6" | Chrome-Plated Steel | 6 11/16" | 11/16" | 21/32" | 2 | 1 | 0000000 | 00000 |
| 6 1/8" | 156 | __ | 7 1/2" | 1 1/2" | 6 1/2" | Chrome-Plated Steel | 7 3/16" | 11/16" | 13/16" | 2 | 1 | 0000000 | 00000 |
| 7 1/8" | 181 | __ | 8 13/16" | 1 3/4" | 7 1/2" | Chrome-Plated Steel | 8 3/4" | 1" | 19/32" | 2 | 1 | 00000000 | 00000 |
| 8 1/8" | 206 | __ | 9 11/16" | 1 3/4" | 8 1/2" | Chrome-Plated Steel | 9 3/4" | 1" | 19/32" | 2 | 1 | 00000000 | 00000 |