Scaffolding Couplers & Fittings

BS EN 74

Double Coupler

(Right-Angle Coupler) BS EN 74 -1:2005 Class B

Double Coupler forms the backbone of a scaffolding structure — securely joining two tubes at a right angle. Engineered for maximum grip and zero slip, it ensures rigid, load-bearing connections for ledgers and standards in heavy-duty scaffolds

  • Standard: Aramco / BS EN
  • BS EN 74-1: 2005 Class B
  • Aramco GI 8.001 §5.3 Adjustable Connection Points

Technical Specification

Material Drop Forged Carbon Steel (Grade S235)
Finish Hot-Dip Galvanized ≥ 85 µm (ISO 1461)
Tube Diameter 48.3 mm OD × 3.2 / 4.0 mm WT
Safe Working Load 6.25 kN (Slip Resistance)
Torque 54 ± 9 Nm (BS EN 74 Annex B)

Embossing Details

ALTRAD SPAR DC BS EN 74 B BATCH No. YEAR

Swivel Coupler

BS EN 74 -1:2005 Class B

The Swivel Coupler connects two tubes at any desired angle, providing unmatched flexibility for diagonal bracing and complex geometries. Ideal for industrial and refinery scaffolds requiring adaptable access systems.

  • Standard: Aramco / BS EN
  • BS EN 74-1: 2005 Class B
  • Aramco GI 8.001 §5.3 Adjustable Connection Points

Technical Specification

Material Drop Forged Steel
Finish Hot-Dip Galvanized ≥ 85 µm (ISO 1461)
Tube Diameter 48.3 mm OD
Safe Working Load 6.25 kN (Slip Resistance)
Torque 54 ± 9 Nm (BS EN 74 Annex B)

Embossing Details

ALTRAD SPAR DC BS EN 74 B BATCH No. YEAR

Single (BRC / Putlog) Coupler

BS EN 74−1:2005 Class A

Single Coupler is designed to fix transom putlogs to ledgers, providing reliable deck support for working platforms. Lightweight yet strong, it is perfect for façade and maintenance scaffolds.

  • Standard: Aramco / BS EN
  • BS EN 74-1: 2005 Class A
  • Aramco GI 8.001 §5.3 Platform Connections

Technical Specification

Material Pressed Steel
Finish Zinc-Plated ≥ 40 µm
Tube Diameter 48.3 mm OD
Safe Working Load 3.0 kN
Torque 45 ± 5 Nm

Embossing Details

ALTRAD SPAR BRC BS EN 74 A BATCH No. YEAR

Sleeve Coupler (Joint Coupler)

BS EN 74−1:2005 Class B

Sleeve Coupler connects tube ends inline for continuous structural runs, ensuring seamless load transfer and perfect alignment in horizontal or vertical configurations.

  • Standard: Aramco / BS EN
  • BS EN 74-1: 2005 Class B
  • Aramco GI 8.001 §5.3 Inline Tube Connections

Technical Specification

Material Forged Steel
Finish Hot-Dip Galvanized ≥ 85 µm
Tube Diameter 48.3 mm OD
Safe Working Load 5.0 kN
Slip Resistance ≥ 6.0 kN
Torque 54 ± 9 Nm

Embossing Details

ALTRAD SPAR SLV BS EN 74 B BATCH No. YEAR

Girder Coupler (Beam Clamp)

BS EN 74−1:2005 Class B

Girder Coupler secures scaffold tubes directly to steel beams, providing safe, stable attachment points for bridgework, tanks, and heavy-duty structures.

  • Standard: Aramco / BS EN
  • Aramco GI 8.001 §5.5 : 2005 Class B
  • Aramco GI 8.001 §5.3 Beam and Structural Connections

Technical Specification

Material Drop-Forged Steel + High-Tensile Bolts
Finish Hot-Dip Galvanized ≥ 85 µm
Tube Diameter 48.3 mm OD
Safe Working Load 10.0 kN
Torque 54 ± 9 Nm

Embossing Details

ALTRAD SPAR SLV BS EN 74 B BATCH No. YEAR

Joint Pin Internal Spigot

BS EN 74−1:2005 Class A

The Joint Pin joins vertical tubes internally, creating a clean, flush connection that maintains alignment and load continuity without the need for external fittings.

  • Standard: Aramco / BS EN
  • BS EN 74−1: 2005 Class A
  • Aramco GI 8.001 §5.6 Vertical Connection Integrity

Technical Specification

Material Machined Carbon Steel (C45)
Finish Hot-Dip Galvanized ≥ 85 µm
Tube Diameter 48.3 mm OD
Axial Load Capacity 45 kN
Slip Resistance ≥ 6.0 kN

Embossing Details

ALTRAD SPAR JP BS EN 74 A BATCH No. YEAR

Ladder Clamp

BS EN 74:2005 / BS EN 131 / OSHA 1926.1053

Ladder Clamp provides a secure, anti-slip connection between scaffold tubes and access ladders, ensuring safe vertical mobility for personnel at height.

  • Standard: Aramco / BS EN
  • BS EN 74: 2005 / BS EN 131 / OSHA 1926.1053
  • Aramco GI 8.001 §5.7 Access Control

Technical Specification

Material Pressed Steel / Drop-Forged Body
Finish Zinc-Plated ≥ 40 µm
Tube Diameter 48.3 mm OD
Lock Type Twin-Bolt Safety Latch
Torque 45 ± 5 Nm

Embossing Details

ALTRAD SPAR LC BS EN 74 BATCH No. YEAR

Toe Board Clamp

BS EN 74 / BS EN 12811

The Toe Board Clamp secures wooden or steel toe boards to scaffold decks, ensuring edge protection and fall-prevention compliance on working platforms.

  • Standard: Aramco / BS EN
  • BS EN 74 BS EN 12811
  • Aramco GI 8.001 §5.8 Edge Protection Systems

Technical Specification

Material Pressed Steel / Zinc-Plated
Tube Diameter 48.3 mm OD
Safe Load 1.5 kN
Torque 40 ± 5 Nm
Finish Zinc-Plated ≥ 40 µm

Embossing Details

ALTRAD SPAR TBC BS EN 74 BATCH No. YEAR

Quality Assurance & Compliance

All couplers are:

  • Proof load tested (≥ 6.25 kN – Class B)
  • Torque verified (54 ± 9 Nm)
  • Coating tested (ISO 1461 ≥ 85 µm)
  • Marked and traceable via the ALTRAD SPARERP System
  • Certified by TÃœV / SGS / Intertek
  • Each coupler is supplied with Material Test Certificates (MTC) and Load Test Reports, ensuring compliance with Aramco GI 8.001 and SABIC §9.4.