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Best Aluminum Tubes for Light String Fixture (2026)

We prioritized 6063/6063-T52 extruded square aluminum tubing in common sizes and mill finishes, ranking options by dimensional suitability for light string fixtures and overall value

This roundup covers aluminum square tubing suited for DIY and commercial light string fixtures, focusing on fit for lamp holders, corrosion resistance, and ease of mounting. Selections prioritize common 6063/6063-T52 alloy profiles, mill finishes, and sizes that balance structural support with trim appearance

Top Picks

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    6063 aluminum tube - square, unpolished, 1.25" height, 0.125" wall, 24" length

    6063 aluminum tube - square, unpolished, 1.25" height, 0.125" wall, 24" length

    Online Metals • ★ 3.7/5 • Budget

    6063 aluminum tube with square cross-section, unpolished finish, extruded and T52 tempered. Delivers corrosion resistance and smooth surface with precise dimensions; suitable for lightweight structure projects. Customers note solid build quality and good value for money

    • 6063 alloy with corrosion resistance
    • square extruded cross-section
    • T52 temper for strength
    Check current price on Amazon →
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Buying Guide

Choose the right alloy

6063 and 6063-T52 alloys are commonly used for extruded square tubing and offer a good balance of strength, machinability, and surface finish for lighting fixtures

Match dimensions to fixture needs

Pick a tube cross-section and wall thickness that fits your socket/clip hardware and provides adequate stiffness—common options here include 3/4" to 1" square with ~1/8" walls

Consider finish and appearance

Mill-finish tubing requires little preparation for indoor fixtures but may need anodizing or painting for outdoor or decorative installations

Verify extrusion and tolerances

Extruded profiles like those listed typically follow ASTM B221; check tolerances if tight fits or end-to-end alignment are critical

Factor price vs. size

Budget options under $50 cover common short lengths; larger cross-sections or longer custom cuts will raise cost, so plan cuts to minimize waste