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U-Bolt Spec Table
U-Bolt Specifications — 9 sizes
SPS-KSA0117-V3032-5988
A U-shaped bolt for clamping and fixing pipes or round members.
Practical Notes
- Select U-bolt matching pipe OD. Mismatched curvature creates 2-point contact and deforms the pipe.
- Tighten both nuts alternately and evenly. One-side-first tightening twists the U-bolt and causes uneven clamping.
Selection Guide
Clamps round members — pipes, rods, cable trays. Curvature is standardized to pipe OD, so select by nominal pipe size. Over-tightening deforms pipes; torque control is necessary. Use hot-dip galvanized versions for outdoor environments.
U-BoltDimension Drawing
SPSU-Bolt
9 sizes| Nominal | Pipe OD | R | d1 | H | E |
|---|---|---|---|---|---|
| 15A | 21.7 | 12 | 10 | 47 | 30 |
| 20A | 27.2 | 15 | 10 | 53 | 30 |
| 25A | 34 | 18 | 10 | 60 | 30 |
| 32A | 42.7 | 23 | 10 | 68 | 30 |
| 40A | 48.6 | 26 | 10 | 74 | 30 |
| 50A | 60.5 | 32 | 10 | 86 | 30 |
| 65A | 76.3 | 40 | 12 | 108 | 35 |
| 80A | 89.1 | 46 | 12 | 120 | 35 |
| 100A | 114.3 | 59 | 16 | 141 | 50 |
Key Features
- U-shaped curve wraps around pipes/rods; curvature standardized per pipe OD
- Nuts on both threaded ends distribute clamping force evenly
- Hot-dip galvanized (HDG) option ensures corrosion resistance for outdoor/marine use
Key Applications
Pipe supports, automotive leaf spring mounting, handrail pipes, cable trays, marine piping
FAQ
How to select U-bolt size?
Select by pipe nominal bore. If insulated, choose size matching the insulated OD.