SCA 140 Ø 40 H: 40 Fixed Connector ST 52

The SCA-140 Fixed Connector is a precision-engineered component designed for structural glass façade systems, also known as Spider Glazing Systems.
This model plays a vital role in securely connecting spider fittings to the main supporting steel structure (profile frame) through a welded installation interface.

Manufactured with high mechanical accuracy and exceptional surface integrity, the SCA-140 offers outstanding strength, perfect alignment stability, and long-term resistance to corrosion.
It combines robust ST52 carbon steel for the body with AISI 304 stainless steel accessories (bolt and washer), creating a product that meets both architectural aesthetics and engineering performance expectations.

Technical Specifications

Function and Application

The SCA-140 serves as the fixed anchoring connector between the steel substructure and the spider fitting that holds the glass panels.
It is a crucial intermediary component in curtain wall façade systems, ensuring accurate alignment, structural reliability, and mechanical load distribution between glass and metal.

Primary Applications

• Structural glass façade systems
• Spider glazing fittings
• Architectural curtain walls
• Commercial building entrances and skylights
• Office towers, malls, airports, and hotels
• Steel frame & stainless façade support systems

Installation

The rear side of the SCA-140 is designed for direct welding to a steel profile or beam.
After welding, the spider body is fastened to the connector using the included M14x25 hex head stainless steel bolt and washer.
This ensures a secure, vibration-free, and corrosion-resistant joint.

Design and Construction

The SCA-140 embodies a solid cylindrical geometry with a centered threaded bore (M14) on one side and a flat welding base on the other.
Each piece is CNC machined from a solid ST52 billet, guaranteeing dimensional precision and surface consistency across all production batches.

The machining process utilizes Solid Processing Technology, which eliminates internal stresses and microfractures that can occur in lower-grade cast parts.
This ensures long service life even under heavy façade loads, wind pressure, and temperature variations.

Core Design Highlights

• Cylindrical design with 40 mm diameter for universal compatibility
• M14 internal threading for spider body attachment
• Flat rear surface optimized for welding to mild or structural steel
• Precision-machined thread depth for firm grip without vibration
• Solid center for improved load-bearing and stability

Material Excellence

The materials selected for the SCA-140 are engineered to ensure strength, reliability, and environmental durability.

Body – ST52 Carbon Steel

ST52 is a high-tensile construction steel known for its ductility, machinability, and excellent welding properties.
It offers:

• High yield strength and load capacity
• Stability under stress and vibration
• Perfect weld bonding without cracking
• Long-term resistance to mechanical fatigue

Fasteners – AISI 304 Stainless Steel

The included M14x25 hex bolt and washer are made of AISI 304 stainless steel, offering:

• Corrosion and oxidation resistance
• High tensile strength
• Smooth assembly and disassembly
• Perfect aesthetic match with spider fittings

Together, these materials create a hybrid connector optimized for performance and aesthetics.

Performance Advantages

1. Extreme Durability: Solid ST52 body withstands high static and dynamic loads.
2. Corrosion Resistance: AISI 304 stainless fasteners maintain integrity in humid, coastal, or industrial environments.
3. Structural Reliability: Fixed-type weldable base eliminates play and misalignment under glass weight.
4. Precision Fit: M14 threading ensures tight contact with spider head bolts, maintaining façade geometry.
5. Quick Installation: Bolt and washer included, reducing site assembly time.
6. Low Maintenance: Designed for lifetime performance without re-adjustment.
7. Aesthetic Continuity: Mirror, brushed, or painted finishes harmonize with modern architecture.

Manufacturing Process

Each SCA-140 is CNC-machined and inspected in multiple stages:

1. Raw material cutting from certified ST52 billets.
2. Precision lathe machining for dimensional accuracy.
3. Internal thread cutting with tolerance class 6H.
4. Surface finishing (satin, mirror, or coated).
5. Quality control including hardness, dimensional, and thread tests.
6. Final packaging with assembly accessories.

The manufacturing facility adheres to ISO 9001 quality management standards and maintains full material traceability.

Compatibility

The SCA-140 connector is compatible with multiple spider routel series, such as:

• SRA / SRB (drilled glass applications)
• SRC (non-drilled systems)
• SRF / SRG (fixed spider arms)

Its M14 thread standard fits nearly all global spider connector systems, making it a universal choice for façade engineers and contractors.

Installation Guide (Step-by-Step)

1. Prepare the Steel Frame:
   Clean the weld area, removing rust, paint, or oil residue for proper bonding.
2. Positioning:
   Mark the exact location according to spider bracket geometry.
3. Welding:
   Weld the rear face of the connector to the steel frame.
   Allow cooling to avoid heat distortion.
4. Assembly:
   Attach the spider body to the SCA-140 using the supplied M14 bolt and washer.
5. Final Tightening:
   Apply recommended torque (40–45 Nm) for optimal preload.
6. Inspection:
   Check alignment, tightening, and surface integrity before glazing installation.

Architectural Benefits

• Invisible fixing mechanism after installation
• Clean, seamless transition between steel structure and glass spider
• Enables flexible façade designs with large-span glazing
• Reduces point stress on glass
• Maintains minimal visual clutter

Environmental & Maintenance Aspects

The hybrid steel-stainless structure ensures minimal maintenance needs:

• No galvanic corrosion between components
• Resistant to acid rain and UV exposure
• Long lifecycle exceeding 25 years under outdoor use
• Fully recyclable materials

Maintenance typically involves periodic visual inspection and torque check every 2–3 years

Packaging & Delivery

Each SCA-140 connector is individually packaged with:

• M14x25 bolt (304 stainless)
• M14 washer (304 stainless)
• Anti-corrosion protection oil
• Label with batch number and QC pass code

Custom branding, laser marking, or QR traceability can be added upon request for project-specific identification.

Use Cases & Reference Projects

• Commercial Towers: Istanbul, Dubai, Singapore high-rise façades
• Corporate HQ Buildings: Structural spider façade systems
• Showrooms and Airports: High-transparency glass walls
• Architectural Renovations: Glass replacement and retrofitting
• Industrial Steel-Glass Hybrid Structures

Why Choose SCA-140?

The SCA-140 Fixed Connector combines precision, reliability, and architectural beauty in one product.
It delivers unmatched stability for welded spider façade systems and simplifies installation for engineers and façade fabricators.

In short:

• Strength of Steel,
• Elegance of Stainless,
• Precision of CNC Machining.

Conclusion

Whether used in a modern glass tower or a minimal structural glazing project, the SCA-140 Fixed Connector ensures the perfect connection between engineering precision and architectural vision.
It is more than just a connector — it is the foundation of façade reliability.

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