Landhoow 25 Set EMT Pipe Universal Strut Clamps 304 Stainless Steel Strut Channel Accessory Conduit Clamp Rigid Pipe Clamp with Bolt and Nut, Silver

Why I reached for these clamps

I had two back-to-back jobs that called for fast, tidy, and corrosion-resistant strut work: a small shop upgrade where I ran 1/2-inch EMT for low-voltage and control wiring along standard 1-5/8-inch channel, and a temporary truss rig that needed clean cable management around lighting and a compact LED panel array. A 25-pack of stainless hardware makes sense for that kind of workload, so I put the Landhoow strut clamps in the cart and got to work.

What you get and first impressions

Out of the box, the Landhoow clamps are straightforward: stamped 304 stainless saddles paired with bolts and nuts, all in a consistent satin silver finish. Edges on my set were clean—no burrs or sharp corners that would scuff conduit or fingers. The clamp radius matched 1/2-inch EMT well; the arc sits evenly and doesn’t rock on the tube.

The included hardware mated cleanly. On my set, the nuts and bolts showed slightly more magnetic attraction than the clamp bodies, which is common with certain fastener alloys. Either way, threads were cut properly and started by hand without binding. I prefer a serrated flange nut for vibration-prone installs, but these standard hex nuts held torque fine with a dab of thread locker.

Installation: quick, predictable, and repeatable

The best thing about these clamps is how little thinking they demand on-site. For a typical run:

• Drop the bolt through the clamp and strut slot.
• Seat the conduit, pinch the saddle, and start the nut by hand.
• Square the conduit to your layout line and snug it.

With a 1/2-inch socket and a nut driver, I moved down a 20-foot section in minutes. The bolt length is appropriate for both deep and shallow strut; you’ve got enough thread to engage confidently without bottoming out. On the truss rig, I paired the clamps with short sections of strut and had no trouble aligning multiple parallel runs—no fiddly shimming, and the clamps didn’t distort when I gave them an extra quarter turn.

If you’re used to clamp styles that need a separate channel spring nut, note that this kit’s bolt-and-nut approach works fine as long as you can access the backside of the strut slot. On closed-in rack sections or tight ceilings, plan your sequence so you’re not wrestling a nut you can’t reach.

Fit and compatibility

These are the 1/2-inch size, and the fit on EMT is spot-on. The saddle centers the tube without leaving pinch marks. On 1/2-inch rigid (which runs a bit larger OD than EMT), I still got a secure bite without over-torquing. The clamps hold conduit to the strut rather than trying to reshape it, which is what you want.

A few notes from the field:

• Works with both shallow (13/16-inch) and deep (1-5/8-inch) strut.
• Plays nicely with slotted or solid channel; the slotted option gives you more placement flexibility.
• If you’re stacking multiple lines, the uniform clamp height helps keep parallel runs tidy without chasing a bow or twist.

Materials and corrosion resistance

Landhoow specifies 304 stainless, and the clamps behaved like it in practice. After a couple of weeks in a damp mechanical room, I spotted only faint tea staining on one fastener—nothing on the saddles themselves. For most indoor and light outdoor applications, that’s exactly what I expect from 304: solid resistance to humidity and incidental moisture.

A few realities worth keeping in mind:

• 304 can show slight magnetic response after forming; that doesn’t mean it’s not stainless.
• If you’re installing in a coastal, chlorinated, or chemically aggressive environment, 316 stainless is the safer bet.
• Mixed-metal systems invite galvanic issues. If your strut is zinc-plated steel and you’re in a persistent wet setting, a bit of dielectric paste under the saddle or using stainless channel helps.

Strength and holding power

Once torqued, these clamps don’t wander. I used a conservative “snug plus a quarter turn” and then checked a few with a small torque wrench in a test rig—about 60–70 in-lb landed me in the same feel zone. No deformation, no thread grit, and no tendency to walk when conduit expands and contracts with temperature. On the truss, with light vibration from moving fixtures, nothing backed off after a long evening. I still recommend a touch of medium-strength thread locker or a lock washer on runs subject to constant vibration.

Where these shine

• Mid-length EMT runs in mechanical spaces where stainless is a smart upgrade over zinc-plated hardware.
• Temporary or portable structures (truss, stagecraft) where repeat install/removal benefits from hardware that doesn’t corrode between events.
• Multi-circuit low-voltage layouts where you want clean parallel lines in strut without dealing with fussy, brand-specific clip systems.

Shortcomings and cautions

No product is perfect, and a few things are worth noting:

• Hardware consistency: My batch was good, but it’s common for budget stainless kits to mix alloys between clamps and fasteners. If you require full 304 for both, confirm with the seller or plan to substitute your own fasteners.
• No locking feature: The included nuts are plain. In vibration-heavy settings, add a stainless lock washer, nyloc, or thread locker.
• Access matters: Because you’re using a loose nut, installs against walls or inside congested racks can be slower than using spring nuts that snap into the channel. It’s a trade-off between universality and speed.

Practical tips from the install

• Start every nut by hand to avoid cross-threading; stainless galling is rare at these sizes but can happen if you drive fasteners dry at high speed.
• Use a tiny smear of anti-seize if you expect to remove and reuse the clamps regularly.
• Keep torque reasonable—over-tightening can flatten thin-wall EMT and won’t improve holding strength.
• For pristine finishes or sensitive cable jackets, slip a short strip of EPDM under the saddle to add isolation without changing clamp geometry.

Value and alternatives

In a 25-pack, the per-clamp cost is attractive, especially compared with branded strut hardware from electrical houses. If you’re outfitting an entire floor with mixed sizes, going with a full stainless ecosystem from a single manufacturer may simplify documentation. But for small to mid-scale projects or maintenance stock, this kit slots in nicely: consistent fit, savings in bulk, and corrosion resistance that beats plated steel options.

If you specifically need spring-nut convenience, consider pairing these with stainless channel nuts; you’ll gain speed in tight spaces at a slight cost bump. If you’re in harsh coastal service, step up to 316 stainless clamps even if that halves your quantity at the same price point.

The bottom line

The Landhoow strut clamps did what I needed them to do: they secured 1/2-inch conduit cleanly, tightened without drama, and shrugged off a damp environment. The stainless construction makes them a smarter long-term choice than plated steel, and the 25-pack delivers good value for anyone laying out multiple runs or stocking a service kit. I’d like to see a locking fastener option in the box, and installers who live on ladders in tight ceilings may prefer spring-nut systems, but those are situational preferences rather than deal-breakers.

Recommendation: I recommend these for electricians, facility techs, and builders who want a reliable, stainless clamp for standard strut work without paying a premium. They offer consistent fit, straightforward installation, and enough corrosion resistance for most indoor and light outdoor jobs. Just add your preferred locking method for vibration-heavy applications and confirm alloy requirements if your spec book is strict.