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1530 T-slot extrusion, 1.5 × 3 in (15-series inch)
What are the exact dimensions of 1530 T-slot extrusion (1.5 × 3 in)? · Hardware · basis: 80/20 Inc. 15 series (1.5 in), from 80/20's page for this profile (size, slot count, series, area, weight) and the 1515, 1545, 3030 and 3060 drawings of the same series for the slot (the page shows no drawing); every slot, lip, cavity, bore and outline number is the drawing's
Exact dimensions. Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part. Mating features
- width
- 76.2 mm
- height
- 38.1 mm
Notes
- 1530 T-slot extrusion, 1.5 × 3 in (15-series inch): 1.5 × 3 in, 6 slots on a 1.500 in = 38.100 mm pitch (80/20 Inc. 15 series (1.5 in)). Source: 80/20's page for this profile (size, slot count, series, area, weight) and the 1515, 1545, 3030 and 3060 drawings of the same series for the slot (the page shows no drawing). Files: STEP and STL at 100, 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 0.320 in = 8.128 mm, lip 0.160 in = 4.064 mm thick at the opening under a 2° drop-lock slope (0.169 in = 4.281 mm at the cavity wall), cavity 0.810 in = 20.574 mm wide under the lips, 0.484 in = 12.294 mm from the face to the cavity floor. Centre bore Ø0.262 in = 6.655 mm per cell (the largest thread whose tap drill fits inside: 5/16-18, 6.53 mm).
- Cavity side walls: the cavity is 0.810 in = 20.574 mm wide under the lips, then follows the diagonal webs (0.160 in = 4.064 mm thick, stated) down to the floor; the webs lie on the cell diagonals (45°), as drawn. The web thickness is the one stated on the same-series drawings named above.
- The closed hollows between cells are not fully dimensioned on the drawing, so they are drawn filled: the outline, slots and bores are exact, the bar is heavier than the real one.
- The drawing does not dimension the outer corner radii, so the corners are square: a pocket cut from this file clears the real rounded corners. The small alignment grooves on the faces are not dimensioned and are left off (the faces are flat).
- 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 1.5 × 3 in with no allowance, so open the pocket by your process's socket fit (see Mating features).
- Attachments: the 1.5 in 15-series 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.
Sizes
| feature | size | from |
|---|---|---|
| outline | 1.5 × 3 in | drawing |
| slot pitch | 1.500 in = 38.100 mm | drawing |
| slot opening | 0.320 in = 8.128 mm | drawing |
| lip thickness at the opening | 0.160 in = 4.064 mm | drawing |
| lip underside slope (drop lock) | 2° | maker's page |
| cavity width under the lips | 0.810 in = 20.574 mm | drawing |
| face to cavity floor | 0.484 in = 12.294 mm | drawing |
| cavity depth under the lip (at the cavity wall) | 0.315 in = 8.012 mm | drawing |
| core between opposite floors | 0.532 in = 13.513 mm | pitch − 2 × face-to-floor (drawing: 0.531 in) |
| diagonal web | 0.160 in = 4.064 mm | drawing |
| centre bore | Ø0.262 in = 6.655 mm × 2 | drawing |
| cross-section area | 2.077 in² (1340 mm²) | maker's page |
| weight | 0.2025 lb/in (2.43 lb/ft; 3.62 kg/m) | maker's page (ft and kg/m converted) |
| Ix / Iy | 1.8042 / 0.4824 in⁴ | maker's page |
| area of this model's section | 1873.8 mm² (2.904 in²) | computed from the DXF |
Mating features
Drawn at the exact size. Open press, slide, run and socket features by your process's clearance; leave designed gaps and clamp fits as drawn.
| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| slot opening | 0.320 in (8.13) | T-nut tongue, slot-cover stem (1.5 in 15-series) | slide | all |
| slot cavity | 0.810 in (20.57) wide under the lips, face to floor 0.484 in (12.29), lip 0.160 in (4.06) | T-nut body (slide-in, drop-in) | slide | all |
| centre bore | Ø0.262 in (6.65) | 5/16-18 thread (tap drill 6.53); end-cap pin | designed | all |
| outline | 1.5 × 3 in, square corners | end-cap outline, foot socket, a pocket that wraps the bar | socket | all |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| 80/20 Inc. | 1530: 1.50 x 3.00 T-slotted profile, six open T-slots: product page with the cross-section drawing and section properties | web | 80/20 site terms verify |
| 80/20 Inc. | 1515 dimensioned cross-section drawing (same series slot) | image | 80/20 site terms verify |
| 80/20 Inc. | 1545 dimensioned cross-section drawing (same series slot) | image | 80/20 site terms verify |
| 80/20 Inc. | 3030 dimensioned cross-section drawing (same series slot) | image | 80/20 site terms verify |
| 80/20 Inc. | 3060 dimensioned cross-section drawing (same series slot) | image | 80/20 site terms verify |
Free files
★ Free files 2 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| 1530-100 | 1530 T-slot extrusion, 1.5 × 3 in (15-series inch): 1.5 × 3 in section, 100 mm long, square ends; DXF = the exact cross-section in mm | STEP · STL · DXF |
| 1530-1000 | 1530 T-slot extrusion, 1.5 × 3 in (15-series inch): 1.5 × 3 in section, 1000 mm long, square ends; DXF = the exact cross-section in mm | STEP · STL · DXF |
Plain text: sheet.txt · JSON: /api/geometry?object=1530-t-slot-extrusion-inch
How it fits
Parts that fit it
Slide-in T-nuts for 20, 30, 40, 45 mm and 1 in,…tongue in the opening, body in the cavity (slide)
Drop-in T-nuts for 20, 30, 40, 45 mm and 1 in,…drops through the opening, turns 90° in the cavity
L corner brackets for 20, 30, 40, 45 mm and 1 in,…legs flat on two profile faces at 90°
Inside corner gussets for 20, 30, 40, 45 mm and 1…legs on two profile faces in the inside corner
Snap-in slot covers for 20, 30, 40, 45 mm and 1…stem in the slot opening, barb behind the lips
Joining plates, 2 × 3 holes, for 20, 30, 40, 45…holes over the slot centrelines on the profile pitch
End caps for every T-slot profile hereend-cap-15in-2x1: pins in the centre bores (press)Alternatives
1515 T-slot extrusion, 1.5 × 1.5 insame 1.5 in 15-series slot, 1.5 × 1.5 in
1545 T-slot extrusion, 1.5 × 4.5 insame 1.5 in 15-series slot, 1.5 × 4.5 in
3030 T-slot extrusion, 3 × 3 insame 1.5 in 15-series slot, 3 × 3 inYou might also need
Questions
What is the slot size of 1530 extrusion?
Opening 0.320 in = 8.128 mm, lip 0.160 in = 4.064 mm, cavity 0.810 in = 20.574 mm wide under the lips and 0.484 in = 12.294 mm deep from the face to the floor, per 80/20 Inc. 15 series (1.5 in)'s drawing.
What T-nuts fit 1530 extrusion?
The 1.5 in 15-series nuts: slide-in (tnut-slide-15in-5-16-18, tnut-slide-15in-1-4-20) and drop-in versions, threaded 5/16-18, 1/4-20 as tap-drill holes, cut to this slot's exact space.
Can I subtract this file to make a part that fits the extrusion exactly?
Yes: the outline is exactly 1.5 × 3 in with square corners (the real bar's corners are rounded, so the pocket clears them); extrude the DXF or subtract the 1000 mm STEP, then open the pocket by your fit.
How heavy is 1530 extrusion?
0.2025 lb/in (2.43 lb/ft), 2.077 in² section, as 80/20 states. This model's section is larger because closed hollows / cavity details the drawing leaves undimensioned are drawn filled; use the stated weight, not the model's volume.
What in this model is not taken straight from the drawing?
The closed hollows between cells are not fully dimensioned on the drawing, so they are drawn filled: the outline, slots and bores are exact, the bar is heavier than the real one. The drawing does not dimension the outer corner radii, so the corners are square: a pocket cut from this file clears the real rounded corners. Face grooves are left off.