Midwest Fasteners 18-8 Stainless Steel Tube Insert Fitting

Midwest Fasteners 18-8 Stainless Steel Tube Insert Fitting

Midwest Fasteners' stainless steel tube insert fitting is built for plumbing and tubing connections where corrosion resistance and a reliable seat are required. Machined from stainless steel, this general fitting is available across a range of sizes — from .470 up to .559" x 3/4" 18-8 — giving installers a dependable connection point without the rust concerns of plain steel hardware. Sold as a standalone fitting, it's a practical stock item for plumbing shops, maintenance departments, and fabricators who need a consistent, corrosion-resistant insert on hand for tube and fitting repairs across multiple tubing diameters. Because the whole line is machined from the same stainless stock, crews can standardize on one fitting family instead of juggling mixed-material inserts from job to job.

Key Features

• Size Range: Available from .470 through .559" x 3/4" 18-8, sized for a secure, consistent fit inside compatible tubing runs.
• Material & Finish: Stainless steel construction with a natural, unplated finish resists corrosion and holds up in wet or washdown environments better than plain steel hardware.
• Type: Stainless steel general fitting designed as a tube insert for plumbing and tubing connections.
• Consistent Dimensions: Manufactured to precise sizes so each insert seats reliably run after run, which matters when matching inserts to existing tubing in the field.
• Grade: 18-8 stainless on the larger .559" x 3/4" size, a widely trusted corrosion-resistant stainless grade for plumbing hardware.
• Finish: Natural stainless steel finish — no plating required, reducing the risk of coating wear or flaking over time.
• Package: Each — sold as a standalone fitting.

Technical Specifications

• Product Type: Stainless Steel General Fitting
• Product Material: Stainless Steel
• Size Range: .470 through .559" x 3/4" 18-8

Typical Applications

• Plumbing tube and fitting repairs where a corrosion-resistant insert is needed.
• Maintenance shops stocking stainless hardware for washdown or wet-area equipment.
• Fabrication and tubing assembly work requiring a precise insert fit across multiple sizes.
• Replacement of worn or corroded plain-steel tube inserts with a stainless upgrade.
• General stockroom use where one corrosion-resistant insert line can cover several tubing diameters.

Why Midwest Fasteners?

Midwest Fasteners supplies this tube insert in genuine stainless steel across a range of sizes, so plumbing and maintenance crews can count on the same fit and corrosion resistance every time they reorder, regardless of which size the job calls for. The natural stainless finish means no plating to wear or flake, and the precise, repeatable machining keeps every insert seating the same way inside compatible tubing. It's a straightforward, no-nonsense fitting built for professionals who need the right size and material on the shelf, not marketing extras.