Tube Extensions | McMaster-Carr

	Material Material

	Shape Shape


Round Tube	Rectangular Tube

	System of Measurement System of Measurement

Inch

Metric

	OD OD

	ID ID

	Wall Thickness Wall Thickness

	Length Length

	Rail Style Rail Style

Square

Round

	Bolt-Together Framing Component Bolt-Together Framing Component


Rail	Telescoping Rail Set

Connector	Bracket Fastener Set

Surface Bracket	Concrete Anchor

Corner Bracket	Mounting Foot

	Rail Width Rail Width

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Rail Height Rail Height

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Inside Width Inside Width

	Framing Type Framing Type

Weld Together

Bolt Together

	Button Diameter Button Diameter

	Button Style Button Style

Single

Double

	Temper Rating Temper Rating

1/2 Hard

3/4 Hard

Softened (Annealed)

	Finish Finish

Galvanized

Zinc Plated

Zinc Yellow-Chromate Plated

	Button Height Button Height

	Yield Strength Yield Strength

	Color Color

	Clear
	White

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256 Products

Structural Framing

Steel Bolt-Together Framing and Fittings

Rails are drilled with consistently spaced holes for multiple mounting options that do not require machining. Use this steel bolt-together framing to build guards, tables, and racks.

Telescoping Weld-Together Rails

Create posts of varying lengths.

Adjustable-Length Shipping Tubes

Square Adjustable-Length Shipping Tubes

These tubes are easier to label and stack than round tubes. To adjust the length, push the ends of the tube together or pull them apart.

Round Adjustable-Length Shipping Tubes

Adjust these tubes by twisting the two halves. A hexagonal end prevents rolling.

Pins for Telescoping Tubing

Button Pins for Telescoping Tubing

Spring force holds pieces of telescoping tubing together. Also known as snap buttons and tubing buttons.

Wire-Lock Pins for Telescoping Tubing

Sized to fit snugly around pipe and tube, these pins use spring force to keep the retainer closed.

Pins for Telescoping Tubing

Also known as gravity pins, these pins fit in holes on telescoping tubing to adjust the length.

Metal

Ultra-Formable 260 Brass Round Tubes

The most formable brass we offer, 260 offers better weldability than 300 series brass but it’s not as machinable. Sometimes called cartridge brass, it's commonly used for ammunition casings, radiator components, and decorative door hardware.

Ultra-Formable 260 Brass Rectangular Tubes

Weldable 122 Copper Tubes

The addition of phosphorus makes 122 copper easier to weld and braze than 110 copper. It has excellent resistance to corrosion caused by water, soil, and weather, making it the go-to material for plumbing and underground applications.

Marine-Grade Copper Nickel Tubes

Commonly used in water treatment plants, these tubes withstand salt water and can be used to make shims, ferrules, and washers.

Telescoping Corrosion-Resistant 3003 Aluminum Tubes

These tubes are sized so that each tube fits into the next larger size.

Temporary Partition Poles

Use these telescoping poles with tarps, drop cloths, and plastic sheeting up to 8 mils thick to create a sturdy, temporary wall and control dust and debris.

Sealant Dispensers

Extension Kits for Sausage-Pack Caulk Guns

Extensions for Caulk Cartridges

These flexible extensions add length and bend 180° to get into hard-to-reach areas.