What is a Putlog Coupler?
A Putlog Coupler, also known as a Single Coupler, Putlog Clamp, Pig Ear Coupler, Single Scaffold Clamp, or Ledger-to-Transom Coupler, is a non-load-bearing scaffolding fitting that securely connects a putlog or transom tube to a ledger tube at a right angle. It provides reliable support for scaffold boards, toe boards, working platforms, and temporary access platforms in tube-and-coupler scaffolding systems.
Unlike a Forged Right Angle Coupler, which transfers structural loads between scaffold tubes, a Putlog Coupler supports scaffold boards and platform components rather than carrying primary structural loads. Construction companies, infrastructure contractors, industrial maintenance teams, and scaffolding rental companies use Putlog Couplers extensively for safe and efficient scaffold platform assembly.
Also Known As
- Putlog Coupler
- Single Coupler
- Single Putlog Coupler
- Putlog Clamp
- Pig Ear Coupler
- Scaffold Single Clamp
- Ledger-to-Transom Coupler
- Transom Coupler
- Scaffold Board Support Coupler
Standard Single Coupler Sizes
The 48.3 mm × 48.3 mm Putlog Coupler is the most widely used size because it fits standard scaffold tubes used across India and international construction projects. AMCO Exports also manufactures additional sizes for industrial scaffolding, refineries, power plants, bridge construction, and custom applications.
| Tube Size | Imperial Equivalent | Common Applications | Availability |
|---|---|---|---|
| 48.3 × 48.3 mm | 1½” × 1½” | Standard Tube & Coupler Scaffolding | Standard |
| 48.3 × 42.3 mm | 1½” × 1¼” | Reducing Connections | On Request |
| 60.3 × 48.3 mm | 2″ × 1½” | Industrial Scaffolding | On Request |
| 60.3 × 60.3 mm | 2″ × 2″ | Heavy-Duty Projects | On Request |
Most Popular Size
The 48.3 mm × 48.3 mm Putlog Coupler remains the preferred choice for scaffold board support, working platforms, ledger-to-transom connections, and access scaffolding systems worldwide.
International Scaffold Coupler Sizes & Standards
AMCO Exports manufactures Putlog Couplers according to international scaffolding standards for customers across Europe, the Middle East, Asia, Africa, and other global markets.
| Tube Size | Markets | Standards |
|---|---|---|
| 48.3 × 48.3 mm | India, UK, Europe, Middle East, Africa | BS 1139, EN 74 |
| 48.6 × 48.6 mm | Japan, South Korea | JIS A 8951, KS |
| 42.7 × 42.7 mm | UK | EN 74 |
| 60.3 × 48.3 mm | Oil & Gas, Refineries | EN 74 |
| 60.3 × 60.3 mm | Infrastructure & Offshore | BS 1139, EN 74 |
| 76.1 × 76.1 mm | Bridge Construction | Project Specific |
| 89 × 89 mm | Petrochemical & Shipbuilding | Project Specific |
Note: The 48.3 mm × 48.3 mm Putlog Coupler is the global standard for tube-and-coupler scaffolding systems.
Applications of Single Scaffold Coupler
- Scaffold Board Support
- Working Platforms
- Ledger-to-Transom Connections
- Tube & Coupler Scaffolding
- Access Scaffolding
- Industrial Maintenance
- Bridge Construction
- Infrastructure Projects
- Refineries
- Power Plants
- Oil & Gas Projects
- Shipbuilding
- Commercial Building Construction
Why Choose AMCO Single Scaffold Couplers?
- 35+ Years of Manufacturing Experience
- Premium Drop Forged & Pressed Steel Construction
- BS 1139 & EN 74 Compliant Options
- Zinc Plated, Electro Galvanized & HDG Finishes
- Precision Half Tee Bolt & Accurate Threading
- Excellent Grip Strength & Long Service Life
- OEM Manufacturing & Private Labeling
- Export Quality Packaging
- Bulk Production Capacity
- Pan India Supply & Worldwide Export
Pan India Supply & Worldwide Export
AMCO Exports supplies Putlog Couplers to contractors, distributors, EPC companies, scaffolding rental businesses, and infrastructure projects throughout India and international markets.
Pan India: Mumbai, Delhi, Bengaluru, Chennai, Hyderabad, Kolkata, Pune, Ahmedabad, Surat, Jaipur, Noida, Gurugram, Ludhiana, Jalandhar, Chandigarh, Kochi, Nagpur, Lucknow, Indore and other major cities.
Export Markets: UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, Nepal, Bangladesh, Sri Lanka, Malaysia, Singapore, Indonesia, Vietnam, Kenya, Tanzania, South Africa, Nigeria and many other countries.
Related Scaffolding Products
- Forged Right Angle Coupler
- Swivel Coupler
- Sleeve Coupler
- Board Retaining Coupler
- Scaffolding Couplers & Clamps
- Types of Scaffolding Couplers
Frequently Asked Questions
What is a Putlog Coupler used for?
A Putlog Coupler connects putlogs or transoms to ledger tubes to support scaffold boards, working platforms, and temporary access structures.
Is a Putlog Coupler load-bearing?
No. A Single Coupler supports scaffold boards and platform components rather than carrying primary structural loads.
Which scaffold tube size does it fit?
The standard Putlog Coupler fits 48.3 mm OD scaffold tubes. Additional sizes are available on request.
What are the other names for a Putlog Coupler?
It is also known as a Single Coupler, Putlog Clamp, Pig Ear Coupler, Scaffold Single Clamp, Ledger-to-Transom Coupler, and Transom Coupler.
Which standards do your Putlog Couplers comply with?
AMCO Exports manufactures Putlog Couplers according to BS 1139, EN 74, IS 2750, IS 4190, and customer-specific project requirements.
Do you supply OEM and export orders?
Yes. We provide OEM manufacturing, private labeling, export-grade packaging, and bulk supply for customers worldwide.
Contact AMCO Exports
📞 Call / WhatsApp: +91 98888 82322
📧 Email: amcosales1@gmail.com
🌐 Website: www.amcoexports.com
- ✔ MOQ & Bulk Pricing Available
- ✔ Same-Day or 24–48 Hour Dispatch
- ✔ OEM Manufacturing & Private Labeling
- ✔ Worldwide Export Support



