2020 aluminum extrusion, 6 mm slot (20-series) — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/2020-aluminum-extrusion/ (CC BY 4.0) Basis: Misumi 5 series, 6 mm slot, from Misumi's dimensioned drawing of this profile; every slot, lip, cavity, bore and outline number is the drawing's Catalog version: 2026-10-20 Overall (mm): width 20.0, height 20.0 - 2020 aluminum extrusion, 6 mm slot (20-series): 20 × 20 mm, 4 slots on a 20 mm pitch (Misumi 5 series, 6 mm slot). Source: Misumi's dimensioned drawing of this profile. Files: STEP and STL at 100, 150, 200, 300, 400, 1000 mm with square ends, and a DXF of the exact cross-section (mm), the master to extrude to any length. The section is centred on the origin and extruded along +Z from z = 0. - Slot: opening 6 mm, lip 2 mm thick at the opening, cavity 12 mm wide under the lips, 6 mm from the face to the cavity floor. Centre bore Ø4.2 mm per cell (the M5 tap drill). - Cavity side walls: the cavity is 12 mm wide under the lips, then follows the diagonal webs (1.5 mm thick, stated) down to the floor; the webs lie on the cell diagonals (45°), as drawn. The web thickness is stated on this series' 2060, 2080 and 4040 drawings. - Outer corners R1 (stated). - Wrapping it: to make a part that fits around the bar, subtract the 1000 mm file (or extrude the DXF) from your solid; the outline is the drawing's 20 × 20 mm with no allowance, so open the pocket by your process's socket fit (see Mating features). - Attachments: the 20-series (6 mm slot) T-nuts, end caps, feet, brackets, gussets, plates and slot covers are cut from these same numbers; the fit check (tools/asm_extrusion_fit.py) placed each one on this profile with zero overlap. feature size from outline 20 × 20 mm, R1 corners drawing slot pitch 20 mm drawing slot opening 6 mm drawing lip thickness at the opening 2 mm drawing cavity width under the lips 12 mm drawing face to cavity floor 6 mm drawing cavity depth under the lip (at the cavity wall) 4 mm drawing core between opposite floors 8 mm pitch − 2 × face-to-floor diagonal web 1.5 mm drawing centre bore Ø4.2 mm × 1 drawing cross-section area 183 mm² maker's page mass 0.5 kg/m maker's page Ix / Iy 0.742 × 10⁴ / 0.742 × 10⁴ mm⁴ maker's page area of this model's section 182.8 mm² computed from the DXF Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Misumi: 20x20 Aluminum Extrusion - 5 Series, Base 20: product page with the cross-section drawing and section properties — web — Misumi site terms [verify license at link] — https://us.misumi-ec.com/vona2/detail/110302683830/ - Misumi: 2020 dimensioned cross-section drawing — image — Misumi site terms [verify license at link] — https://us.misumi-ec.com/linked/item/10302683830/img/Picture2_new.jpg - Misumi: 40x40, 5 series drawing (states the 1.5 mm diagonal web and 2 mm face wall of this series) — image — Misumi site terms [verify license at link] — https://us.misumi-ec.com/linked/item/10302684530/img/Picture7_new.jpg Free files (CC BY 4.0, Xem Studio; STEP + STL, 6 parts): https://xemstudio.com/files/hardware/2020-aluminum-extrusion/index.json API: https://xemstudio.com/api/geometry?object=2020-aluminum-extrusion