Aluminum tee sizes (6063-T52, 6061-T6): 3/4 x 3/4 x 1/8, 1 x 1 x 1/8, 1-1/4 x 7/8, 2 x 3/4 with weights + 4 in STEP/STL — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/aluminum-tee-sizes-6063-6061/  (sheet CC BY 4.0)
Basis: Continental Steel architectural tee table (size and weight per foot, sharp corners), Alcobra, Metals4U and Online Metals sizes; weights recomputed from the drawn section; 2 profile files
Catalog version: 2026-10-20

Overall (mm): length 101.6
- Aluminum tee bar is mostly sold as 6063-T52 'architectural tee' in 1/8 in thickness and as 6061-T6 structural tee. Continental Steel lists four 6063-T52 items (3/4 x 3/4, 1 x 1, 1-1/4 x 7/8, 2 x 3/4, all 1/8 in thick, 16 ft stock) with an estimated weight per foot and states sharp inside and outside corners. Alcobra Metals lists 3/4 x 3/4 x 1/8 and 1 x 1 x 1/8 (6063-T52) and 1-1/2 x 1-1/2 x 1/8 (6063-T5); the 1 x 1 x 1/8 page names ASTM B221 and lengths of 12 to 94 in. Metals4U and Online Metals list 1 x 1 x 1/8, 1-1/2 x 1-1/8 and a 6061-T6 1-1/2 x 1-1/2 x 1/4. The two dimension sources agree on the sizes they share. The Aluminum Association also publishes structural tees (with stem radii and taper); no table of them was read, so those are not covered.
- Check: a tee of flange width W, height H and uniform thickness t has area W t + (H − t) t. Recomputed at 0.0975 lb/in³ (aluminum 2.70 g/cm³) the weights come within 1 % of Continental's printed weights for all four sizes, which confirms the flange and stem are the same thickness and the corners are sharp (no radius adds area).
- The sources print sizes as 'A x B x t' and the two numbers cannot be told apart by weight alone (a 2 x 3/4 and a 3/4 x 2 tee have the same area). Industrial Metal Supply's tee page defines W (width), H (height) and T (thickness) in a diagram but its sizes are in an image. So only the two square tees are drawn; the 1-1/4 x 7/8 and 2 x 3/4 sizes are numbers only.
- Files are 4 in (101.6 mm) long along X (Xem's choice), flange on top (y centred, z from H − t to H), stem centred below.
- Aluminum angle: aluminum-angle-stock-sizes-and-radii, aluminum-angles. Flat bar: aluminum-flat-bar-and-round-bar-sizes.

source / alloy  size as printed (in)  decimal (in)  mm  lb/ft as printed  lb/ft recomputed (derived)  profile file
Continental Steel 6063-T52  3/4 x 3/4 x 1/8  0.75 x 0.75 x 0.125  19.05 x 19.05 x 3.175  0.1998  0.2011  yes (square tee: orientation does not matter)
Continental Steel 6063-T52  1 x 1 x 1/8  1 x 1 x 0.125  25.40 x 25.40 x 3.175  0.2716  0.2742  yes (square tee: orientation does not matter)
Continental Steel 6063-T52  1-1/4 x 7/8 x 1/8  1.25 x 0.875 x 0.125  31.75 x 22.22 x 3.175  0.291  0.2925  no: the sources do not say which number is the flange width
Continental Steel 6063-T52  2 x 3/4 x 1/8  2 x 0.75 x 0.125  50.80 x 19.05 x 3.175  0.3822  0.3839  no: the sources do not say which number is the flange width
Alcobra 6063-T52  3/4 x 3/4 x 1/8  0.75 x 0.75 x 0.125  19.05 x 19.05 x 3.175  —  —  same size as Continental
Alcobra 6063-T52  1 x 1 x 1/8  1 x 1 x 0.125  25.4 x 25.4 x 3.175  —  —  same size as Continental; ASTM B221; lengths 12 to 94 in
Alcobra 6063-T5  1-1/2 x 1-1/2 x 1/8  1.5 x 1.5 x 0.125  38.1 x 38.1 x 3.175  —  —  no weight, no corner statement: no file
Metals4U 6063  1 x 1 x 1/8  1 x 1 x 0.125  25.4 x 25.4 x 3.175  —  —  title only
Online Metals (via Zoro) 6063-T52  1-1/2 x 1-1/2 x 1/8  1.5 x 1.5 x 0.125  38.1 x 38.1 x 3.175  —  —  title only
Online Metals (via Zoro) 6061-T6  1-1/2 x 1-1/2 x 1/4  1.5 x 1.5 x 0.25  38.1 x 38.1 x 6.35  —  —  title only (the page does not label the three numbers)

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Continental Steel: Aluminum architectural tees, series 6063: 4 items 6063-T52, size, estimated weight per foot, 16 ft stock, sharp inside and outside corners — web — Publisher's page; dimensions are facts — https://continentalsteel.com/viewitems/all-categories/aluminum-architectural-tees-series-6063
- Alcobra Metals: Aluminum tee, architectural: 3/4 x 3/4 x 1/8 and 1 x 1 x 1/8 (6063-T52), 1-1/2 x 1-1/2 x 1/8 (6063-T5) — web — Publisher's page; dimensions are facts — https://alcobrametals.com/aluminum/tee-architectural
- Alcobra Metals: 1 x 1 x 1/8 6063-T52 architectural tee: ASTM B221, lengths 12 to 94 in (no stem / flange breakdown, corners not stated) — web — Publisher's page; dimensions are facts — https://alcobrametals.com/product/1-x-1-x-1-8-6063t52-alum-arch-tee/
- Metals4U: Aluminum tee bar 1 x 1 x 1/8 (6063) — web — Publisher's page; dimensions are facts — https://www.metals4uonline.com/shop-by-metal-type/aluminum/aluminum-tee-bar/
- Zoro (Online Metals listings): Aluminum T-bar 1.5 x 1.5 x 0.25 (6061-T6 extruded) and 1.5 x 1.5 x 0.125 (6063-T52 extruded) as named in the listing titles — web — Publisher's page; dimensions are facts — https://www.zoro.com/onlinemetals-15-x-15-x-025-aluminum-t-bar-6061-t6-extruded-7018/i/G307079010/
- McMaster-Carr: 6061 / 6063 aluminum bars (rectangular, round, angle, channel and tee listed under aluminum bars and structural shapes) (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/products/aluminum-bars/material~aluminum-2/material~6061-aluminum/material~6063-aluminum/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 2 parts): https://xemstudio.com/files/hardware/aluminum-tee-sizes-6063-6061/index.json
API: https://xemstudio.com/api/geometry?object=aluminum-tee-sizes-6063-6061