- Guide hub
Scaffolding Coupler Types and Names: Chart of UK and US Names, Uses and EN 74 Classes
Scaffolding coupler types by name: double, swivel, parallel, sleeve, joint pin, putlog and beam clamp, with UK and US names, uses and EN 74-1 classes.
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Scaffold Beam Clamp (Girder Coupler): What EN 74-1 Covers and What to Ask
What a scaffold beam clamp or girder coupler is, why BS EN 74-1:2022+A1:2025 has no load table for it, and what to ask a supplier before ordering.
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Sleeve Coupler vs Joint Pin (Spigot): Which Standard Covers Which
How a sleeve coupler and a joint pin differ, what BS EN 74-1:2022+A1:2025 requires of the sleeve coupler, and which document covers the spigot pin.
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Double Coupler (Right-Angle Clamp): EN 74-1 Classes A/AA/B/BB and What They Require
What a double / right-angle coupler does, what BS EN 74-1:2022+A1:2025 Table 8 requires of classes A, AA, B and BB, and what to write on the order.
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Swivel Coupler (Swivel Clamp): Load Requirements, Weight and Swivel vs Double
Scaffold swivel coupler: what it does, BS EN 74-1:2022+A1:2025 Class A and B type-test values (not working loads), weight per piece, and swivel vs double.
Coupler Types
Swivel, double / right-angle, sleeve, putlog, beam clamps and accessory couplers — what each does and where it is used.