U-BOLTS
U-Bolts are U-shaped bolts with two threaded arms protruding from a curved base. Round U-Bolts are typically used for attaching pipe or steel round bar to wood or steel post. They are also used to hang wrought iron pipe in mechanical installations.
Long tangent U-Bolts are also available. Their long legs are perfect for mounting to thick flanges. Long tangent U-Bolts are basically the same thing as the standard round U-Bolt, except that they have longer legs and more thread.
GOVERNING STANDARDS
IFI-136 – Studs and Bent Bolts
ASME B18.15 – Forged Eyebolts
U-BOLT SPECIFICATIONS
| Thread Diameter | Width Between Legs | Inside Length | Thread Length | Pipe Size |
|---|---|---|---|---|
| 1/4-20 | 3/4 | 1 1/4 | 3/4 | 3/8 |
| 1/4-20 | 3/4 | 1 3/4 | 3/4 | 3/8 |
| 1/4-20 | 3/4 | 2 1/4 | 1 1/2 | 3/8 |
| 1/4-20 | 1 | 1 3/4 | 3/4 | 1/2 |
| 1/4-20 | 1 1/8 | 2 | 3/4 | 3/4 |
| 1/4-20 | 1 3/8 | 2 1/4 | 3/4 | 1 |
| 1/4-20 | 1 3/4 | 2 3/4 | 1 | 1 1/4 |
| 1/4-20 | 2 | 3 1/4 | 1 1/4 | 1 1/2 |
| 1/4-20 | 1 1/2 | 3 1/2 | 2 | 1 |
| 5/16-18 | 1 3/8 | 2 3/16 | 1 | 1 |
| 5/16-18 | 1 3/8 | 3 11/16 | 1 1/2 | 1 |
| 5/16-18 | 1 3/4 | 2 11/16 | 1 | 1 1/4 |
| 5/16-18 | 2 | 2 11/16 | 1 | 1 1/2 |
| 5/16-18 | 2 | 3 11/16 | 1 1/2 | 1 1/2 |
| 5/16-18 | 2 1/2 | 3 3/16 | 1 1/2 | 2 |
| 3/8-16 | 1 | 2 1/4 | 1 1/4 | 1/2 |
| 3/8-16 | 1 3/8 | 3 1/8 | 1 1/2 | 1 |
| 3/8-16 | 1 1/2 | 2 1/2 | 1 1/4 | 1 |
| 3/8-16 | 2 | 3 1/8 | 1 1/4 | 1 1/2 |
| 3/8-16 | 2 1/2 | 3 5/8 | 1 1/2 | 2 |
| 3/8-16 | 3 | 4 1/8 | 1 1/2 | 2 1/2 |
| 3/8-16 | 3 5/8 | 4 5/8 | 1 1/2 | 3 |
| 1/2-13 | 3 | 4 1/2 | 1 1/2 | 2 1/2 |
| 1/2-13 | 3.5 | 5 | 1 1/2 | 3 |
| 1/2-13 | 4 | 5 1/2 | 1 1/2 | 3 1/2 |
| 1/2-13 | 4.625 | 6 | 1 1/2 | 4 |
| 1/2-13 | 5.625 | 7 | 2 | 5 |
| 1/2-13 | 6.75 | 8 | 2 | 6 |
| 1/2-13 | 8.75 | 10 3/8 | 2 | 8 |
| 5/8-11 | 8.75 | 11 1/2 | 4 | 8 |