Description
Mild Steel Hollow Section Flanges – Pack of 5
Secure your square hollow section posts with precision using our Mild Steel Hollow Section Flange Plates.
Engineered for durability and ease of installation, each flange plate in this pack is available in multiple SHS sizes.
General Specifications:
- Outer Dimensions (A): 100mm x 100mm [3.94” x 3.94”]
- Mounting Holes (C): 4x Ø10.2mm (Ø 13/32”)
- Distance of Holes to centre: (D) 15mm [0.59″]
- Material: Mild steel – suitable for welding, galvanizing, or painting
- Quantity: Pack of 4 flanges
Packet includes only the bottom Flange ready for welding!
Available Square Hollow Section Sizes and Corresponding Central Cut-Outs (B):
| Hollow Section Size | Central Cut-Out (mm) | Central Cut-Out (inches) |
|---|---|---|
| 30 x 30 | 31 x 31 | 1.22” x 1.22” |
| 40 x 40 | 41 x 41 | 1.61” x 1.61” |
| 50 x 50 | 51 x 51 | 2.01” x 2.01” |
Key Features:
- Clean, precise laser-cut openings for a snug fit
- Rounded corners for added safety and a professional look
- Pre-drilled for easy installation
- Ideal for fabrication, fencing, balustrades, and general structural applications
Applications:
Perfect for builders, welders, and DIY enthusiasts working with metal frameworks, railings, or base plates for posts.

