Fixed 90° drop-forged coupler for joining vertical standards to horizontal ledgers.
The right angle coupler (also called a 90° coupler or double coupler) is the workhorse fitting of every tube-and-coupler scaffold. Two bolted jaws are forged at a fixed right angle so that a vertical standard and a horizontal ledger lock together rigidly — carrying vertical loads in shear and resisting the frame’s outward push.
The coupler body is die-forged from carbon steel, giving a continuous grain flow that resists fatigue far better than welded or cast fittings.
Permanent right-angle jaws hold standards and ledgers square, keeping the scaffold frame true and simplifying erection.
M12 T-bolts with hex or wing nuts give fast, repeatable tightening with a standard podger spanner.
Choose hot-dip galvanizing for long outdoor service life, or painted finish for rental fleets where colour coding matters.
Manufactured to EN 74 / BS 1139 interface dimensions for 48.3 × 3.2 mm scaffold tube; other sizes to drawing.
Dimensions follow EN 74 / BS 1139 series. Custom sizes produced to drawing.
| Process | Drop-forged or pressed sheet steel (two versions available) |
|---|---|
| Product Type | Right angle coupler / 90° double coupler (fixed) |
| Manufacturing Process | Drop forged (heavy duty) / pressed steel available |
| Material | Q235 carbon steel / 45# steel |
| Compatible Tube | 48.3 × 3.2 mm scaffold tube (EN 74 Class A) |
| Fastener | M12 T-bolt with hex nut or wing nut |
| Surface Finish | Hot-dip galvanized 45–70 μm / electro-galvanized / painted |
| Unit Weight | Approx. 1.10 kg (forged), 0.85 kg (pressed) |
| Standard Reference | EN 74-1 / BS 1139-2.2 / GB 15831 |
500 pcs
25 pcs per carton, or 50 pcs per woven bag, on steel pallets
15–25 days after deposit and sample approval
Download full specification sheet (PDF) · Includes dimensions, materials, coating options and packing data.
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