300 Series 4-Arm Stainless Steel Spider Fitting for Point-Supported Glass Curtain Wall

300 Series 4-Arm Spider Fitting

The 300 Series 4-arm spider fitting is a heavy-duty precision-cast stainless steel connector developed for large-format glass panels and high-load point-supported curtain wall systems. Its robust central hub carries four arms that each engage a routel fitting, spreading fixing forces across the corners of oversized glass units.

The 300 Series is specified where panel sizes and wind loads exceed the capacity of standard series spiders, such as high-rise facades, grand entrances and wide-span atriums. It is ordered by facade contractors and curtain wall specialists who need a dependable heavy detail for landmark buildings, and mirror polished or satin brushed finishes keep the hardware visually consistent with the rest of the facade system.

Key Features

• Material: SS304 / SS316 stainless steel
• Finish: Mirror polished or satin brushed
• Design: 4-arm heavy-duty hub for high loads
• Quality: Material test certificates available on request

Specifications

• Series: 300 Series 4-arm configuration
• Design: Heavy-duty cast hub for high-load panels
• Connection: Threaded arms accepting routel fittings
• Material options: SS304 / SS316 stainless steel
• Surface finish: Mirror polished or satin brushed

Installation & Usage

The spider is fixed to the supporting back structure through its central connection, and each glass corner is engaged with a routel fitting threaded into the arm. Fasteners should be tightened to the design values in the project documentation, and gaskets checked for seating before final tightening. Protective film should remain on polished faces until handover, and the stainless surfaces cleaned after installation.

Quality Assurance

Every 300 Series spider is 100% inspected before shipment for casting integrity, dimensional accuracy and surface finish. Material test certificates are available on request to support structural design checks.

Applications

• Large-format point-supported curtain walls
• High-rise glass facades
• Glass atriums & skylights
• Grand entrance & lobby glazing

Customization & OEM

Custom sizes, finishes and OEM manufacturing are accepted, with flexible MOQ for wholesale orders. Send your drawings to our team to request a quote.