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Selecting U-Bolts Using Pipe, Conduit, or Tubing Trade Size
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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 U-bolts have good corrosion resistance in most environments. 304 stainless steel U-bolts have excellent corrosion resistance and good chemical resistance.
ID | Mounting Plate | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | Metric, mm | For Pipe Size  | Ht. | Thread Lg. | Ctr.-to-Ctr. | Material | Lg. | Wd. | Thick. | No.of Nuts Included | Temp. Range, °F | Each | |
Galvanized Steel | |||||||||||||
1/4"-20 Thread Size | |||||||||||||
| 15/16" | 24 | 1/2 | 3 1/4" | 2 3/8" | 1 3/16" | Rubber | 2 3/4" | 1" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
| 1 1/8" | 29 | 3/4 | 3 1/8" | 2 1/2" | 1 3/8" | Rubber | 2 3/4" | 1" | 1/8" | 4 | -65° to 250° | 00000000 | 0000 |
| 1 3/8" | 35 | 1 | 3 3/8" | 2 3/8" | 1 5/8" | Rubber | 3" | 1" | 1/8" | 4 | -65° to 250° | 00000000 | 0000 |
3/8"-16 Thread Size | |||||||||||||
| 1 11/16" | 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° | 00000000 | 0000 |
| 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° | 00000000 | 0000 |
| 2 7/16" | 62 | 2 | 4 7/16" | 2 1/2" | 2 13/16" | Rubber | 4 1/4" | 1 1/4" | 1/8" | 4 | -65° to 250° | 00000000 | 0000 |
1/2"-13 Thread Size | |||||||||||||
| 2 15/16" | 75 | 2 1/2 | 5 3/16" | 3" | 3 7/16" | Rubber | 7 5/8" | 2" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
| 3 9/16" | 90 | 3 | 5 3/4" | 3" | 4 1/16" | Rubber | 7 1/4" | 2" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
| 4 9/16" | 116 | 4 | 6 3/4" | 3" | 5 1/16" | Rubber | 8 1/4" | 2" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
| 5 5/8" | 143 | 5 | 7 3/4" | 3" | 6 1/8" | Rubber | 8" | 2" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
5/8"-11 Thread Size | |||||||||||||
| 6 3/4" | 171 | 6 | 9 7/16" | 3 3/4" | 7 3/8" | Rubber | 9 3/4" | 2 1/4" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
| 8 3/4" | 222 | 8 | 11 1/2" | 3 3/4" | 9 3/8" | Rubber | 11 3/4" | 2 1/4" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
3/4"-10 Thread Size | |||||||||||||
| 10 7/8" | 276 | 10 | 13 3/4" | 4" | 11 5/8" | Rubber | 14 1/4" | 2 1/2" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
7/8"-9 Thread Size | |||||||||||||
| 12 7/8" | 327 | 12 | 16" | 4 1/4" | 13 3/4" | Rubber | 16 1/2" | 2 3/4" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
| 14 1/8" | 359 | 14 | 17 1/4" | 3" | 15" | Rubber | 20" | 2 3/4" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
| 16 1/8" | 410 | 16 | 19 1/4" | 4 1/4" | 17" | Rubber | 22" | 2 3/4" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
1"-8 Thread Size | |||||||||||||
| 18 1/8" | 460 | 18 | 21 5/8" | 4 1/4" | 19 1/8" | Rubber | 22 1/4" | 2 3/4" | 1/8" | 4 | -65° to 250° | 00000000 | 000000 |
| 20 1/8" | 511 | 20 | 23 5/8" | 4 3/4" | 21 1/8" | Rubber | 21 1/8" | 2 3/4" | 1/8" | 4 | -65° to 250° | 00000000 | 000000 |
| 24 1/8" | 613 | 24 | 27 5/8" | 4 3/4" | 25 1/8" | Rubber | 28 1/4" | 2 3/4" | 1/8" | 4 | -65° to 250° | 00000000 | 000000 |
| 30 1/8" | 765 | 30 | 33 5/8" | 4 3/4" | 31 1/8" | Rubber | 34" | 2 3/4" | 1/8" | 4 | -65° to 250° | 00000000 | 000000 |
304 Stainless Steel | |||||||||||||
1/4"-20 Thread Size | |||||||||||||
| 15/16" | 24 | 1/2 | 3 1/4" | 2 3/8" | 1 3/16" | Rubber | 2 3/4" | 1" | 1/8" | 4 | -65° to 250° | 00000000 | 0000 |
| 1 1/8" | 29 | 3/4 | 3 1/8" | 2 1/2" | 1 3/8" | Rubber | 2 3/4" | 1" | 1/8" | 4 | -65° to 250° | 00000000 | 0000 |
| 1 3/8" | 35 | 1 | 3 3/8" | 2 3/8" | 1 5/8" | Rubber | 3" | 1" | 1/8" | 4 | -65° to 250° | 00000000 | 0000 |
3/8"-16 Thread Size | |||||||||||||
| 1 11/16" | 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° | 00000000 | 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° | 00000000 | 00000 |
| 2 7/16" | 62 | 2 | 4 7/16" | 2 1/2" | 2 13/16" | Rubber | 4 1/4" | 1 1/4" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
1/2"-13 Thread Size | |||||||||||||
| 2 15/16" | 75 | 2 1/2 | 5 3/16" | 3" | 3 7/16" | Rubber | 7 5/8" | 2" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
| 3 9/16" | 90 | 3 | 5 3/4" | 3" | 4 1/16" | Rubber | 7 1/4" | 2" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
| 4 9/16" | 116 | 4 | 6 3/4" | 3" | 5 1/16" | Rubber | 8 1/4" | 2" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
| 5 5/8" | 143 | 5 | 7 3/4" | 3" | 6 1/8" | Rubber | 8" | 2" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
5/8"-11 Thread Size | |||||||||||||
| 6 3/4" | 171 | 6 | 9 7/16" | 3 3/4" | 7 3/8" | Rubber | 9 3/4" | 2 1/4" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
| 8 3/4" | 222 | 8 | 11 1/2" | 3 3/4" | 9 3/8" | Rubber | 11 3/4" | 2 1/4" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
3/4"-10 Thread Size | |||||||||||||
| 10 7/8" | 276 | 10 | 13 3/4" | 4" | 11 5/8" | Rubber | 14 1/4" | 2 1/2" | 1/8" | 4 | -65° to 250° | 00000000 | 00000 |
7/8"-9 Thread Size | |||||||||||||
| 12 7/8" | 327 | 12 | 16" | 4 1/4" | 13 3/4" | Rubber | 16 1/2" | 2 3/4" | 1/8" | 4 | -65° to 250° | 00000000 | 000000 |
| 14 1/8" | 359 | 14 | 17 1/4" | 3" | 15" | Rubber | 20" | 2 3/4" | 1/8" | 4 | -65° to 250° | 00000000 | 000000 |
| 16 1/8" | 410 | 16 | 19 1/4" | 4 1/4" | 17" | Rubber | 22" | 2 3/4" | 1/8" | 4 | -65° to 250° | 00000000 | 000000 |
1"-8 Thread Size | |||||||||||||
| 18 1/8" | 460 | 18 | 21 5/8" | 4 1/4" | 19 1/8" | Rubber | 22 1/4" | 2 3/4" | 1/8" | 4 | -65° to 250° | 00000000 | 000000 |
| 24 1/8" | 613 | 24 | 27 5/8" | 4 3/4" | 25 1/8" | Rubber | 28 1/4" | 2 3/4" | 1/8" | 4 | -65° to 250° | 00000000 | 000000 |
Nonconductive U-Bolts
These fiberglass-reinforced polyurethane U-bolts won't conduct electricity or cause metal-to-metal corrosion. They are abrasion, chemical, and UV resistant. Use them to support pipe, tube, and conduit from ceilings, walls, and poles.
ID | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | Metric, mm | For Pipe Size | Ht. | Thread Lg. | Capacity, lbs. | Color | Ctr.-to-Ctr. | No. of Nuts Included | Temp. Range, ° F | Each | |
Polyurethane Rubber | |||||||||||
3/8"-16 Thread Size | |||||||||||
| 15/16" | 24 | 1/2 | 2 1/16" | 1 1/4" | 75 | Gray | 1 5/16" | 2 | -40° to 150° | 00000000 | 000000 |
| 1 1/8" | 29 | 3/4 | 2 1/4" | 1 1/4" | 75 | Gray | 1 1/2" | 2 | -40° to 150° | 00000000 | 00000 |
| 1 3/8" | 35 | 1 | 2 1/2" | 1 1/4" | 75 | Gray | 1 3/4" | 2 | -40° to 150° | 00000000 | 00000 |
| 1 11/16" | 43 | 1 1/4 | 2 13/16" | 1 1/4" | 75 | Gray | 2 1/16" | 2 | -40° to 150° | 00000000 | 00000 |
| 2" | 51 | 1 1/2 | 3 1/8" | 1 1/4" | 75 | Gray | 2 3/8" | 2 | -40° to 150° | 00000000 | 00000 |
1/2"-13 Thread Size | |||||||||||
| 2 7/16" | 62 | 2 | 3 11/16" | 1 1/2" | 150 | Gray | 2 15/16" | 2 | -40° to 150° | 00000000 | 00000 |
| 2 15/16" | 75 | 2 1/2 | 4 3/16" | 1 1/2" | 150 | Gray | 3 7/16" | 2 | -40° to 150° | 00000000 | 00000 |
| 3 9/16" | 90 | 3 | 4 13/16" | 1 1/2" | 150 | Gray | 4 1/16" | 2 | -40° to 150° | 00000000 | 00000 |
| 4 1/16" | 103 | 3 1/2 | 5 3/8" | 1 1/2" | 150 | Gray | 4 9/16" | 2 | -40° to 150° | 00000000 | 00000 |
| 4 9/16" | 116 | 4 | 5 7/8" | 1 1/2" | 150 | Gray | 5 1/16" | 2 | -40° to 150° | 00000000 | 00000 |
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 U-bolts have good corrosion resistance in most environments.304 stainless steel U-bolts have excellent corrosion resistance and good chemical resistance.
Zinc-Plated Steel | 304 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Inside Wd. | Ht. | Thread Lg. | Capacity | Ctr.-to-Ctr. | Temp. Range, °F | Each | Each | ||
1/2"-13 Thread Size | |||||||||
| 2" | 2 5/8" | 1" | Not Rated | 2 1/2" | Not Rated to 435° | 0000000 | 000000 | 0000000 | 000000 |
| 2" | 4 5/8" | 2" | Not Rated | 2 1/2" | Not Rated to 435° | 0000000 | 00000 | 0000000 | 00000 |
| 2" | 6 5/8" | 3" | Not Rated | 2 1/2" | Not Rated to 435° | 0000000 | 00000 | 0000000 | 00000 |
| 4" | 2 5/8" | 1" | Not Rated | 4 1/2" | Not Rated to 435° | 0000000 | 00000 | 0000000 | 00000 |
| 4" | 4 5/8" | 2" | Not Rated | 4 1/2" | Not Rated to 435° | 0000000 | 00000 | 0000000 | 00000 |
| 4" | 6 5/8" | 3" | Not Rated | 4 1/2" | Not Rated to 435° | 0000000 | 00000 | 0000000 | 00000 |
| 6" | 4 5/8" | 2" | Not Rated | 6 1/2" | Not Rated to 435° | 0000000 | 00000 | 0000000 | 00000 |
| 6" | 6 5/8" | 3" | Not Rated | 6 1/2" | Not Rated to 435° | 0000000 | 00000 | 0000000 | 00000 |
| 6" | 8 5/8" | 4" | Not Rated | 6 1/2" | Not Rated to 435° | 0000000 | 00000 | 0000000 | 00000 |
| 8" | 4 5/8" | 2" | Not Rated | 8 1/2" | Not Rated to 435° | 0000000 | 00000 | 0000000 | 00000 |
| 8" | 6 5/8" | 3" | Not Rated | 8 1/2" | Not Rated to 435° | 0000000 | 00000 | 0000000 | 00000 |
| 8" | 8 5/8" | 4" | Not Rated | 8 1/2" | Not Rated to 435° | 0000000 | 00000 | 0000000 | 00000 |