Single putlog couplers • Double couplers • Swivel couplers • Sleeve couplers • Joint pins • Base plates • Girder clamps (Gravlock/SK) • Board retaining clamps • Roofing couplers (Wrigley/waffle) • rust resistance & long life • Compatible with 48.3mm scaffold tubes • Ideal for scaffolding frameworks, guard rails, staging, lighting rigs & temporary structures • New high-quality stock












At West Sussex Scaffolding, we supply a comprehensive range of high-quality scaffold fittings and clamps for safe, secure, and reliable connections with standard 48.3mm galvanised scaffolding tubes. Our selection includes essential components such as:
Established in 2012, we are a trusted UK-based scaffolding supplier with extensive hands-on industry experience. As active scaffolders serving domestic, commercial, construction, and industrial clients across West Sussex, Hampshire, Surrey, and nationwide, we understand the importance of durable, corrosion-resistant fittings. Most of our couplers and clamps feature zinc-plated finishes, offering excellent protection against rust and extending service life in demanding outdoor environments. Our products are sourced to support safe temporary works, in line with UK industry best practice and relevant aspects of BS 1139 and associated standards for scaffolding couplers and fittings.
Whether you’re a builder, contractor, or DIY user, our competitively priced scaffold fittings deliver the strength, reliability, and performance required for staging, guard rails, lighting rigs, or complete scaffolding structures. We offer nationwide delivery via professional carriers or collection by appointment from our West Sussex base, with typical lead times of 2–5 working days.
Browse our full range online, or for expert advice, bulk orders, or trade enquiries, contact our team on 0800 133 7934 or office@westsussexscaffolding.co.uk—we’re here to help ensure your project is built on solid foundations.
Fitting Type | Common Use | Key Feature |
Single Putlog Coupler | Right-angle connections for transoms/putlogs to ledgers | Wrapover design, non-load-bearing |
Double Coupler | 90° load-bearing joints for standards to ledgers, braces, and handrails | Heavy-duty full grip on both tubes |
Swivel Coupler | Diagonal or angled bracing in irregular setups | Full rotation for flexible angles |
Sleeve Coupler | End-to-end extension of tubes (vertical or horizontal) | Secure external join |
Joint Pin | Internal end-to-end tube connection | Expands inside tubes for a tight fit |
Base Plate | Distributing weight on the ground/floors for standards | 150x150mm square with spigot |
Girder Clamp (Gravlock/SK) | Attaching tubes to I-beams/girders (use in pairs) | High-strength for beam connections |
Board Retaining Clamp | Securing scaffold boards to prevent movement | Board clamp for platform safety |
Scaffold fittings or clamps are metal components that include clips, couplers, joiners, sleeves, brackets, and fittings used to connect scaffolding tubes to create working platforms and tubular structures. Below, we provide details of each type of scaffold fitting, including its uses and prices.
Most of the clamps and fittings we supply are zinc-plated to ensure longer life and prevent rusting and corrosion. Scaffold fittings are the foundation of any scaffolding framework, but they can also be used for staging, lighting rigs, guard rails, and much more.
Single coupler: Single wrapover fittings are used to connect tubes at a right angle. This fitting is a great way to connect transoms or putlogs to ledgers when erecting a scaffolding structure. Single couplers are not designed to be load-bearing.
Double couplers: Doubles are used to connect two scaffold poles at 90-degree angles. They are heavy-duty, load-bearing and are typically used for connecting uprights to ledgers, braces to ledgers and handrails to uprights.
Swivel couplers: Swivels are used to connect scaffold tubes at diagonal angles; they are used primarily to add diagonal braces to a scaffold’s framework. The name itself says it all: when two tubes are connected with this fitting, you can move or swivel them around to any angle.
Sleeve couplers: Sleeves are usually preferred for connecting the ends of two scaffolding tubes, extending them vertically or horizontally.
Joint pin: This fitting is also used to connect two tubes end-to-end. The joint pin is inserted into each end of both tubes, and the middle bolt is then secured and tightened, which in turn causes the two parts of the pin to expand and grip the insides of both tubes, providing a secure connection.
Base plates: Straightforward in design, they allow a tube to spread its weight when placed on the floor beneath it. Our base plates are 150mm by 150mm square and 5mm in thickness. The spigot is 50mm tall and is where the tube sits. It has a diameter of 34mm, which allows a 48.3mm tube to slide smoothly around it.
Putlog adapters: Putlog scaffold fittings are generally used by scaffolding erectors on brickwork scaffolds. It is attached to the end of a transom tube, allowing the adapter’s flat end to rest on the brickwork and provide extra support. It is a small but integral piece of scaffolding equipment.
Girder clamps: These scaffold fittings are used in pairs to attach a scaffold tube to an “I” beam girder. Girder clamps, also known as Gravlock couplers or SK fittings, are made from high-quality steel.
Scaffold board retaining clamps: A board retaining clip, also known as a board clamp, is used to secure scaffold boards to the structure’s tubes, preventing the board from moving.
Roofing coupler: Wrigley fittings are primarily used to secure corrugated metal roofing sheets (CI sheets) to the top of a temporary roof covering without requiring drilling into the sheet. They can also be known in the trade as roof couplers or waffle clamps.
Tredda plates: This durable plastic plate is typically used on pavements as a support for base plates to prevent damage to surfaces where a galvanised scaffold tube and steel base plate are situated. It allows the base plate to sit securely inside the plastic and is usually a high-visibility yellow colour.
| Fitting Type | Compatible Tube Diameter | Material/Finish | Primary Strength/Use Case | Notes from Industry Practice |
| Single Putlog Coupler | 48.3mm | Zinc-plated steel | Right-angle, non-load-bearing connections | Ideal for transoms/putlogs; avoid for main loads |
| Double Coupler | 48.3mm | Zinc-plated steel | 90° load-bearing joints | Heavy-duty; use for structural integrity |
| Swivel Coupler | 48.3mm | Zinc-plated steel | Any-angle bracing | Essential for diagonals/irregular setups |
| Sleeve Coupler | 48.3mm | Zinc-plated steel | End-to-end extension | Use for lengthening runs; internal grip |
| Joint Pin | 48.3mm | Zinc-plated steel | Internal tube joining | Compression only; not for tension |
| Base Plate | 48.3mm spigot | Zinc-plated steel | Ground/floor load distribution | 150x150mm; pair with sole plates on soft ground |
| Girder Clamp (Gravlock/SK) | 48.3mm to beam | High-strength steel, zinc-plated | Beam/I-girder attachment | Use in pairs; high shear strength |
| Board Retaining Clamp | 48.3mm | Zinc-plated steel | Securing scaffold boards | Prevents uplift/movement on platforms |
| Roofing Coupler (Wrigley) | 48.3mm | Zinc-plated steel | Fixing corrugated sheets | No-drill roof attachments |
Yes, all our fittings are designed for standard 48.3mm diameter scaffold tubes (common in UK tube-and-fitting systems). They’re zinc-plated for rust resistance and are suitable for frameworks, staging, lighting rigs, guardrails, and temporary structures.
Coupler Type | Angle Flexibility | Load-Bearing? | Typical Applications | Best For |
Single Putlog | Fixed 90° | No | Putlogs/transoms to ledgers | Lighter horizontal supports |
Double | Fixed 90° | Yes | Standards/ledgers, braces, handrails | Main structural joints |
Swivel | Any angle | Yes (angled) | Diagonal bracing, irregular setups | Flexible configurations |
Sleeve | Straight join | Yes | Extending tubes vertically/horizontally | Lengthening runs |
Our high-quality, brand-new fittings align with UK industry best practices for safe scaffolding (including relevant aspects of BS 1139 for tubes/fittings and EN 74 equivalents for couplers). We prioritise durable, corrosion-resistant designs based on our own scaffolding experience since 2012. Always follow proper assembly and inspection procedures, and comply with TG20:21 guidelines.
Factor | Why It Matters | Our Recommendation / Best Practice |
Load Type (Tension/Compression/Shear) | Prevents failure under different forces | Double/swivel for load-bearing; joint pins compression-only |
Angle Requirement | Ensures secure connections in complex setups | Swivel for diagonals; fixed (double/single) for 90° |
Corrosion Resistance | Extends life in outdoor/wet conditions | All our fittings are zinc-plated for rust protection |
Standards Alignment | Compliance with UK safety regs (e.g., TG20:21) | Designed to align with BS 1139/EN 74 principles; always inspect |
Mixed Use | Compatibility in combined setups | Yes, if secure—consult us for site-specific advice |
Inspection Frequency | Detects wear/damage early | Visual check before each use; full inspection per guidelines |
Forged fittings (heavier-duty, often drop-forged) offer superior strength for high-load applications, while pressed are lighter/cost-effective for general use. Our current range focuses on reliable zinc-plated options—contact us if you need specifics on forging type.
Yes, most are compatible in mixed setups (e.g., swivel for bracing + double for main joints), as long as connections are secure and follow design/load requirements.
Match the coupler to the joint type: Use double couplers for load-bearing 90° connections (e.g., standards to ledgers), swivel couplers for angled bracing, single putlog for lighter transom supports, and sleeve/joint pins for extensions. Consider load, angle, and environment—zinc plating helps in wet conditions.
Add items to your cart for a quick delivery quote (nationwide via carriers or collect from West Sussex). We offer discounts on bulk/trade orders. Call 0800 1337934 or email office@westsussexscaffolding.co.uk for personalised advice.