Strut Pipe & Conduit Clamps
A strut pipe clamp is a two-piece clamp that bolts into strut channel to support pipe, conduit, or tube along a run. Eugene Fastener & Supply stocks the complete line: universal clamps that fit both EMT and rigid, dedicated EMT clamps, rigid conduit clamps, OD clamps sized to the exact outside diameter, and copper-plated clamps for copper tube. Sizes run from 1/4" through 12", in electro-galvanized zinc, stainless, and aluminum.
These clamps fit Unistrut and other standard 1-5/8" strut systems, so a competitor part number almost always has an EFS equivalent. For vibration-isolating clamps, see our cushion clamps. Buy by the piece or the carton, with same-day shipping on orders placed before 2pm Pacific.
- STR4301
- STRUT PIPE CLAMPS - UNIVERSAL - 1/2" ZINC
- F
- 0
- Weight: 0.0800000
| Pipe Size: | 1/2 in1/2 in |
| Clamp Type: | Universal (EMT/Rigid)Universal (EMT/Rigid) |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4302
- STRUT PIPE CLAMPS - UNIVERSAL - 3/4" ZINC
- F
- 0
- Weight: 0.1000000
| Pipe Size: | 3/4 in3/4 in |
| Clamp Type: | Universal (EMT/Rigid)Universal (EMT/Rigid) |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4303
- STRUT PIPE CLAMPS - UNIVERSAL - 1" ZINC
- F
- 0
- Weight: 0.1200000
| Pipe Size: | 1 in1 in |
| Clamp Type: | Universal (EMT/Rigid)Universal (EMT/Rigid) |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4304
- STRUT PIPE CLAMPS - UNIVERSAL - 1-1/4" ZINC
- F
- 0
- Weight: 0.1500000
| Pipe Size: | 1-1/4 in1-1/4 in |
| Clamp Type: | Universal (EMT/Rigid)Universal (EMT/Rigid) |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4305
- STRUT PIPE CLAMPS - UNIVERSAL - 1-1/2" ZINC
- F
- 0
- Weight: 0.2600000
| Pipe Size: | 1-1/2 in1-1/2 in |
| Clamp Type: | Universal (EMT/Rigid)Universal (EMT/Rigid) |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4306
- STRUT PIPE CLAMPS - UNIVERSAL - 2" ZINC
- F
- 0
- Weight: 0.2900000
| Pipe Size: | 2 in2 in |
| Clamp Type: | Universal (EMT/Rigid)Universal (EMT/Rigid) |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4327S1
- STRUT PIPE CLAMPS - RIGID PIPE - 2" 304 STAINLESS
- F
- 0
- Weight: 0.2900000
| Pipe Size: | 2 in2 in |
| Clamp Type: | RigidRigid |
| Material / Finish: | 304 Stainless304 Stainless |
- STR4329
- STRUT PIPE CLAMPS - RIGID PIPE - 3" ZINC
- F
- 0
- Weight: 0.3700000
| Pipe Size: | 3 in3 in |
| Clamp Type: | RigidRigid |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4331
- STRUT PIPE CLAMPS - RIGID PIPE - 4" ZINC
- F
- 0
- Weight: 0.5800000
| Pipe Size: | 4 in4 in |
| Clamp Type: | RigidRigid |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4332
- STRUT PIPE CLAMPS - RIGID PIPE - 5" ZINC
- F
- 0
- Weight: 0.5800000
| Pipe Size: | 5 in5 in |
| Clamp Type: | RigidRigid |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4333S2
- STRUT PIPE CLAMPS - RIGID PIPE - 6" 316 STAINLESS
- F
- 0
- Weight: 0.8700000
| Pipe Size: | 6 in6 in |
| Clamp Type: | RigidRigid |
| Material / Finish: | 316 Stainless316 Stainless |
- STR4335S2
- STRUT PIPE CLAMPS - RIGID PIPE - 8" 316 STAINLESS
- F
- 0
- Weight: 1.1600000
| Pipe Size: | 8 in8 in |
| Clamp Type: | RigidRigid |
| Material / Finish: | 316 Stainless316 Stainless |
- STR4341
- STRUT CLAMP RIGID 3/8" PIPE ELECTRO GALV
- F
- 0
- Weight: 0.0800000
| Pipe Size: | 3/8 in3/8 in |
| Clamp Type: | RigidRigid |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4346
- STRUT CLAMP RIGID 1" PIPE ELECTRO GALV
- F
- 0
- Weight: 0.1700000
| Pipe Size: | 1 in1 in |
| Clamp Type: | RigidRigid |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4350
- STRUT CLAMP RIGID 1 1/2" PIPE ELECTRO GALV
- F
- 0
- Weight: 0.1450000
| Pipe Size: | 1-1/2 in1-1/2 in |
| Clamp Type: | RigidRigid |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4358
- STRUT CLAMP RIGID 2 1/2" PIPE ELECTRO GALV
- F
- 0
- Weight: 0.2000000
| Pipe Size: | 2-1/2 in2-1/2 in |
| Clamp Type: | RigidRigid |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4362
- STRUT CLAMP RIGID 3" PIPE ELECTRO GALV
- F
- 0
- Weight: 0.2350000
| Pipe Size: | 3 in3 in |
| Clamp Type: | RigidRigid |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4370
- STRUT CLAMP RIGID 4" PIPE ELECTRO GALV
- F
- 0
- Weight: 0.6700000
| Pipe Size: | 4 in4 in |
| Clamp Type: | RigidRigid |
| Material / Finish: | Zinc PlatedZinc Plated |
- STR4492
- STRUT PIPE CLAMPS - PIPE - 4" COPPER PLATED, COPPER TUBE CLAMPS
- F
- 0
- Weight: 0.6100000
| Pipe Size: | 4 in4 in |
| Clamp Type: | Copper TubeCopper Tube |
| Material / Finish: | Copper PlatedCopper Plated |
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Strut Pipe & Conduit Clamps — EMT, Rigid, OD & Copper
Need pipe or conduit clamps for a strut run, or matching a part number from another brand?
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What Is a Strut Pipe Clamp?
A strut pipe clamp is a two-part clamp that bolts into the channel of strut and wraps a pipe, conduit, or tube to hold it along a support run. One half seats in the strut with a channel nut; the other half closes over the pipe and bolts down. The right clamp is sized to the exact pipe so it holds securely without crushing or rattling.
Which Clamp Type Do I Need?
Pipe and conduit are measured differently, so the clamp type must match how your pipe is sized.
| Clamp Type | Use For | Sized By |
|---|---|---|
| Universal Clamp | EMT or rigid conduit (works for both) | Trade size. For the best fit, specify EMT or rigid. |
| EMT Clamp | EMT (thin-wall) conduit only | EMT trade size |
| Rigid Clamp | Rigid / IMC steel conduit and steel pipe | Rigid trade size |
| OD Clamp | Any pipe or tube by exact outside diameter | Measured outside diameter |
| Copper Tube Clamp | Copper tube (copper-plated to prevent galvanic corrosion) | Copper tube size |
Tip: a universal clamp fits both EMT and rigid, but for the tightest fit, order the clamp that matches your conduit type. When in doubt, measure the actual outside diameter and use an OD clamp.
Common Sizes
A selection of our most-ordered clamps, electro-galvanized. Click to buy; the full size range (1/4" to 12") is in the category.
| Size | Type | EFS SKU |
|---|---|---|
| 1/2" | EMT | STR4311 |
| 3/4" | Universal (EMT/rigid) | STR4302 |
| 1-1/2" | Universal (EMT/rigid) | STR4305 |
| 1/2" | Rigid | STR4322 |
| 3" | Rigid | STR4362 |
| 3/8" OD | OD clamp | STR4341 |
For vibration-prone or noise-sensitive runs, use a cushion clamp instead.
Brand Cross-Reference
Our pipe clamps cross-reference to the major strut brands (full chart on our strut cross-reference page):
| EFS SKU | Description | Unistrut | PowerStrut | B-Line | Superstrut |
|---|---|---|---|---|---|
| STR4302 | 3/4 universal clamp | P1212 | PS 1300 3/4 | B2209 | 703-3/4 E/G |
| STR4311 | 1/2 EMT clamp | P1426 | PS 1000 1/2 | B2001 | 700-1/2-STR-EG |
| STR4322 | 1/2 rigid clamp | P1111 | PS 1100 1/2 | B2008 | 702-1/2 EG |
| STR4341 | 3/8 OD clamp | P2025 | PS 1200 3/8 | B2024 | 701-3/8 EG |
Brand names are used for identification only. Eugene Fastener supplies equivalent parts and is not affiliated with these manufacturers.
Finishes
- Electro-galvanized zinc (standard): interior and dry runs.
- Stainless steel: wet, washdown, coastal, and corrosive environments.
- Aluminum: lighter weight, corrosion resistant.
- Copper-plated: for copper tube, to prevent galvanic corrosion.
Frequently Asked Questions
What is the difference between an EMT clamp and a rigid clamp?
EMT (thin-wall conduit) and rigid (heavy-wall conduit and steel pipe) have different outside diameters at the same trade size, so the clamps differ. An EMT clamp is sized to EMT; a rigid clamp is sized to rigid/IMC. A universal clamp is built to fit both, but for the tightest hold, use the clamp that matches your conduit type.
Can a universal strut clamp be used for both EMT and rigid?
Yes. The universal clamp is designed to fit both EMT and rigid conduit at a given trade size. It is the convenient single-SKU option. If you need the most precise fit, for example to prevent any movement, order the dedicated EMT or rigid clamp.
How do I size a strut pipe clamp?
Match the clamp to how your pipe is measured. For EMT and rigid conduit, use the trade size with the matching clamp type. For pipe or tube specified by outside diameter, measure the actual OD and use an OD clamp. For copper tube, use a copper tube clamp by copper size. When unsure, measure the outside diameter and order an OD clamp.
What is an OD clamp?
An OD clamp is sized to the exact measured outside diameter of a pipe or tube rather than a trade size. It is the right choice when your pipe is not standard conduit, or when you want to be certain of the fit. We stock OD clamps in fine increments from 1/4 inch up.
Do you have clamps for copper tube?
Yes. Copper tube clamps are copper-plated so the clamp and the copper tube will not set up galvanic corrosion where they touch. Order by copper tube size.
Do these clamps fit Unistrut?
Yes. Our pipe and conduit clamps cross-reference to Unistrut and other standard 1-5/8 inch strut systems. For example our 1/2 inch rigid clamp matches Unistrut P1111. See the cross-reference table above.
More Strut Accessories at Eugene Fastener: cushion clamps, beam clamps, channel nuts, strut channel, and the full strut & accessories category.
Family owned. Eugene, Oregon. Ships nationwide.
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