• 304 stainless steel threaded weldable square plate for structural joining and heavy-duty fixing
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304 Stainless Steel Threaded Weldable Plates - Square

304 Stainless Steel Threaded Weldable Plates - Square

Upgrade your structural builds with our 304 Stainless Steel Threaded Weldable Plates – Square, premium weld-on base plates designed to create strong, corrosion-resistant threaded fixing points in square tube and box section frameworks. Perfect for heavy-duty fabrication, workshop projects, machinery assemblies, and adjustable support systems, these plates make installation fast, secure, and dependable.

Key Features & Benefits

Premium 304 Stainless Steel Construction: Made from high-quality 304 stainless steel — known for excellent corrosion resistance, strength, and durability — these plates are ideal for both indoor and outdoor environments, including wet, marine, or hygienic applications.

Threaded Weldable Design: Each square plate features a precision-cut threaded hole that can be welded directly into square steel tube or box section, providing a robust anchoring point for fasteners.

Versatile Thread Options: Available in a range of metric thread sizes (M8–M20) and plate dimensions (e.g., 25 × 25 mm, 30 × 30 mm, 40 × 40 mm, 50 × 50 mm), so you can choose the right plate for your tube size and hardware needs.

Heavy-Duty 3 mm Thickness: Designed with robust material thickness for excellent load distribution once welded in place, making them ideal for adjustable feet, levelling supports, castors, bolts and other fixings.

Easy Welding & Integration: These plates can be quickly welded into tube ends or frames, helping you create sturdy fixing points without complex machining or tapping operations.

Applications

Welding into square tube or box section to create fixed threaded anchor points

Installing adjustable levelling feet on equipment bases and frames

Adding door or panel mounting points in workstations and industrial equipment

Securing castors, bolts, studs and structural fixings in custom builds

Suitable for fabrication, automation, manufacturing, retail, and architectural projects where strong, rust-resistant threaded fixings are required

Why Choose These Weldable Plates?

Our square 304 stainless steel threaded weldable plates combine strength, corrosion resistance, and ease of installation — turning hollow box sections into durable threaded mounting points without the need for drilling, tapping, or external inserts. Whether you’re a professional fabricator or a DIY maker building industrial structures, these plates deliver a lasting, reliable solution for heavy-duty fixings.

How to Request a Quote
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View full details
SKU Thread Size Tube Size (mm)
WELDS/25/08 M8 25 x 25
WELDS/30/08 M8 30 x 30
WELDS/40/08 M8 40 x 40
WELDS/25/10 M10 25 x 25
WELDS/30/10 M10 30 x 30
WELDS/40/10 M10 40 x 40
WELDS/25/12 M12 25 x 25
WELDS/30/12 M12 30 x 30
WELDS/40/12 M12 40 x 40
WELDS/50/12 M12 50 x 50
WELDS/40/16 M16 40 x 40
WELDS/50/16 M16 50 x 50
WELDS/40/20 M20 40 x 40
WELDS/50/20 M20 50 x 50

Why shop with us?

  • Best priced trade discounts

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    We offer fast next-day delivery on all in-stock products from our warehouse in the UK. We never charge for minimum orders nor do we have minimum order quantities, so whether it’s a packet of fasteners or bulk quantities you can depend on our speedy next-day delivery to your address.

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Frequently Asked Questions

What makes 304 stainless steel ideal for use in weldable plates?
304 stainless steel is known for its excellent corrosion resistance, strength, and durability, making it perfect for outdoor, marine, and hygienic environments where rust resistance is essential.
How easy is it to weld these threaded plates into square tubing?
These plates are designed for easy welding, allowing you to quickly create secure fixing points in square tube or box sections without complex machining, ensuring a reliable and durable bond.
What are the available sizes and thread options for these welded plates?
Our 304 stainless steel threaded weldable plates come in various sizes, including 25x25 mm, 30x30 mm, 40x40 mm, and 50x50 mm, with metric thread options ranging from M8 to M20 to suit different application requirements.
Can these plates support heavy-duty loads once welded in place?
Yes, with a robust 3 mm thickness design, these plates offer excellent load distribution, making them suitable for heavy-duty applications like fixing castors, levelling supports, or machinery components.
In what types of projects are these welded plates most commonly used?
These plates are ideal for creating fixed threaded anchor points, installing adjustable levelling feet, mounting panels, securing castors and bolts, and are suitable for fabrication, manufacturing, automation, retail, and architectural projects where durable, rust-resistant fixings are needed.