LEFLCRE 50 Pcs 3/4 Inch Threaded Black Malleable Iron Pipe Fittings Set - 10 Each for Flanges, Elbows, Tees, Caps, and Plugs for DIY Industrial Vintage Style Furniture, Shelving, Home Decor

I’ve built more than my share of industrial-style shelves, racks, and small furniture, and I’ve learned that reliable fittings make or break the experience. This 3/4-inch fitting set from LEFLCRE aims to give DIYers a starter drawer full of the essentials. After a few weekends using it on a wall-shelf project, a standing coat rack, and a compact utility cart, I came away with a clear sense of where it shines—and where it asks for a little patience.

What you get and what you don’t

The assortment covers the core shapes most projects need: flanges, tees, elbows, caps, and couplings—10 of each. That’s enough for multiple small builds or one moderately complex piece, especially when you plan your joints efficiently. You’ll still need to supply your own pipe lengths and nipples; those are easy to find at any big box store in standard 3/4-inch NPT sizes.

Worth noting: there are no mounting screws for the flanges, and there are no decorative covers or set screws. This is a straightforward, utilitarian kit geared toward actual build parts rather than hardware extras.

Build quality and finish

The parts are malleable cast iron with a blackened finish. In hand, they feel substantial. Thread depth is appropriate for 3/4-inch NPT, and the wall thickness and casting feel on par with the fittings I buy individually at the plumbing aisle.

The finish reads as a dark gray/gunmetal rather than a deep, uniform black. If you’re trying to match jet-black hardware, you’ll likely want to finish these yourself. I had good results with this quick sequence:
- Degrease with mineral spirits or a citrus-based cleaner.
- Lightly scuff the exterior (not the threads) with a Scotch-Brite pad.
- Wipe down with isopropyl alcohol and let dry.
- Apply a matte clear coat or flat black enamel for a consistent color and light rust protection.

If you prefer the raw industrial look, a thin coat of paste wax or boiled linseed oil can enhance the gray tone and ward off flash rust indoors.

Threads and consistency

Out of the box, most threads were clean and seated smoothly onto standard 3/4-inch pipe. A handful of pieces had minor burrs or overspray at the thread start. That’s normal for budget-friendly sets, and easy to fix. I ran a small brass brush around the lead threads on a few parts and they spun on cleanly afterward.

Tees and elbows were consistent enough that I could mirror-build left and right sides of a shelf bracket without fighting alignment. Flanges were mostly flat; a couple had a slight wobble on a granite surface plate, but they pulled flush when anchored to studs.

Assembly experience

This is where the set is most satisfying. Having 10 of each fitting on hand turns design into a puzzle you can actually solve with parts in front of you, instead of multiple store runs. For my wall shelf, I used two flanges per upright, a couple of elbows to form a return, and tees for crossbars. For the cart frame, couplings made it easy to extend runs without overbuying long sections of pipe.

A few practical tips from the builds:
- Dry fit everything first. NPT threads are tapered; orientation can shift with the last half-turn. If you need precise angles, consider adding a short nipple and locking orientation with thread compound where appropriate.
- Use thread compound or PTFE tape only if you truly need a locked position or you’re carrying fluids. For furniture, I prefer a small dab of removable thread locker on just a couple of joints to stiffen the assembly without making disassembly miserable.
- Consider weight paths. For shelves, let the flanges take vertical loads into studs; let crossbars stabilize laterally. Don’t rely on an elbow as a primary load-bearing point without adequate support.

Performance in projects

• Wall shelf (36 inches wide): Two uprights into studs using four-hole flanges, a crossbar with a tee on each side, and elbows for a small return. The structure felt rigid with no sag, and the flanges sat flat once tightened.
• Standing coat rack: The heavier weight of 3/4-inch fittings gives the base nice stability. Caps finished the ends cleanly and kept things clothing-friendly. I’d pick 3/4-inch over 1/2-inch for free-standing pieces; the mass is an asset.
• Compact utility cart frame: Couplings simplified modular length changes while I dialed in dimensions. The frame survived being loaded with paint cans and a small compressor without any thread creep or loosening.

Durability and rust resistance

Indoors, the factory finish and light oil film are fine to start, but uncoated iron can develop light surface rust over time in humid rooms. A quick topcoat—clear matte or paint—pays off. In a bathroom or laundry room, I strongly recommend sealing. Outdoors, I’d use a primer rated for metal and a tough topcoat.

While these fittings can handle mechanical stress typical of furniture, I don’t treat kits like this as code-rated plumbing supplies. For decor builds, they’re great. For actual pressurized systems, use fittings explicitly listed and rated for that purpose.

Compatibility and sizing

These are standard 3/4-inch NPT fittings and worked with pipe and nipples from two different home centers without issue. The flanges use a common four-hole pattern; I paired them with #10 wood screws for studs and sleeve anchors for masonry. If you’re mounting to drywall alone, use appropriate toggles—but best practice is to hit studs, especially for shelf loads.

What could be better

• Color accuracy: If you expect literal black, you’ll be disappointed. The finish is a dark gray. It takes finish well, but the out-of-box color is not uniform jet black.
• Thread cleanup: A few pieces needed a quick brush to start smoothly. Not a dealbreaker, but it’s part of the experience with bulk kits.
• Flange flatness tolerance: Mostly good, but I’d love to see tighter control to eliminate the occasional wobble before fastening.

Value

Buying 50 individual fittings at a hardware store adds up quickly. The cost-per-fitting savings of a kit like this is meaningful, especially when you’re iterating on a design and need extras at hand. You’ll have leftovers after a typical shelf or rack build, but that’s the point—you’re stocking a reusable kit. If you plan two or more projects or expect to tweak designs, the set pays for itself compared to piecemeal buying.

Who it’s for

• DIYers building industrial-style furniture, shelving, and racks who want a ready supply of the common shapes.
• Small businesses staging retail displays or coffee bars on a budget, where repeatable builds matter.
• Makers who prefer 3/4-inch heft for stability and presence versus lighter 1/2-inch components.

If your priority is perfectly uniform black hardware with a flawless finish, you’ll either want to refinish these or step up to higher-priced decorative-grade fittings.

The bottom line

As a working assortment of 3/4-inch iron fittings, the LEFLCRE set does what I need it to do: the parts are sturdy, the threads are serviceable, and the variety lets me design without counting down to the last elbow. The finish isn’t showroom-black, but it’s consistent enough to build with, and it takes paint and clear coats well. After sealing, my projects look sharp and feel solid.

Recommendation: I recommend this set for DIY furniture and décor builds, prototyping, and small shop fixtures. It offers strong value, standard compatibility, and enough quantity to tackle multiple projects. Be prepared to do light cleanup on some threads and plan for your own finishing if a true black look is required. If you’re okay with that tradeoff, it’s a dependable, cost-effective way to keep your fittings drawer stocked.