K&S Metals 3904 Round Aluminium Tube 5mm x 1m 0.45mm Wall 5pcs KS3904

K&S Metals 3904 Round Aluminium Tubes are precision-sized hollow metal tubes for RC model building, scale detailing, scratch-building and hobby fabrication. Made from lightweight, corrosion-resistant aluminium alloy, each tube measures 5mm in outside diameter with a 0.45mm wall thickness and a length of 1 metre. Supplied as a bag of five tubes, this versatile material is ideal for constructing custom model frameworks, supports, sleeves and other non-load-rated hobby components.

Features

• Lightweight Aluminium Construction: Easy-to-work material suited to model building, RC customisation and craft projects.
• 5mm Outside Diameter: Consistent round profile for projects requiring small-diameter hollow tubing.
• 0.45mm Wall Thickness: Thin-walled design balances low weight with practical rigidity for hobby applications.
• One-Metre Lengths: Long stock provides flexibility to cut multiple custom-sized components.
• Five Tubes per Bag: Contains five individual one-metre tubes, providing a total of five metres of material.
• 3003-H14 Aluminium Alloy: General-purpose aluminium with useful forming characteristics and corrosion resistance.
• Mill Finish: Natural unfinished aluminium surface suitable for further preparation, painting or finishing.
• Customisable Material: Can be cut, drilled and shaped with suitable metalworking tools.
• Versatile Model Applications: Useful for scale framework, architectural models, RC detailing, lightweight supports and custom fabrication.
• Hollow Round Profile: Allows use as a sleeve or guide where internal clearance and application requirements permit.

Specifications

• Brand: K&S Precision Metals
• Manufacturer Part Number: 3904
• SKU: KS3904
• Barcode: 614121039049
• Product Type: Round Aluminium Tube
• Material: Aluminium
• Alloy: 3003-H14
• Shape: Round Hollow Tube
• Outside Diameter: 5mm
• Wall Thickness: 0.45mm
• Inside Diameter: Approximately 4.1mm (0.162 Inches)
• Length per Tube: 1,000mm (1 Metre)
• Finish: Natural Mill Finish
• Quantity: 5 Tubes per Bag
• Total Material Length: 5 Metres
• Application: Hobby Fabrication, RC Model Building, Scale Detailing and General Craft Projects

Includes

• 5 x K&S Metals 3904 Round Aluminium Tubes, 5mm Outside Diameter x 0.45mm Wall x 1 Metre Long

FAQ

How many aluminium tubes are included in K&S 3904? The manufacturer-specified pack contains five individual tubes, each measuring one metre long. This provides a total of five metres of aluminium tubing.

What is the internal diameter of the 5mm tube? With a 5mm outside diameter and 0.45mm wall thickness, the nominal internal diameter is approximately 4.1mm. K&S publishes an internal diameter of 0.162 inches.

Can this aluminium tubing be cut to size? Yes. Suitable tube cutters, fine-tooth saws and other metalworking tools can be used to cut the tubing. Remove sharp edges and burrs before assembly.

Is K&S 3904 suitable for RC model building? Yes. It can be used for custom scale details, lightweight framework and other hobby fabrication projects. It is general-purpose tubing, so its suitability for a particular structural or moving component must be assessed separately.

Can the tubing be painted or glued? Yes. Aluminium can be painted with a suitable metal primer or bonded using an adhesive appropriate for the materials and loads involved. Clean and prepare the surface before finishing.

Important Notes

• Each tube measures one metre long. Confirm available storage space and delivery requirements for long material.
• Manufacturer packaging specifies five tubes per bag. Verify the retail quantity before dispatch.
• Measurements are nominal. Check actual dimensions and tolerances before precision fitting.
• This is general-purpose hobby tubing and is not supplied with a structural load rating.
• Use appropriate eye protection when cutting, drilling or working with metal.
• Cut ends may be sharp and should be deburred before handling or installation.
• Tools, adhesives, paint and models shown in promotional examples are not included.