Free CAD Blocks and Symbols

Blocks and symbols to drop into your own drawings: signs, fixtures, annotation symbols and standard parts. Every file here is public domain: open it in your browser, then download it and use it for anything.

1335 drawings · DWG, DXF, PDF, SVG, DWF and more · public domain

440 drawings in Blocks & symbols · Clear all

  • A4 symbol: Caution: moving machinery (356 x 508 mm source)dxfOpen the drawing
    A4 symbol: Caution: moving machinery (356 x 508 mm source)

    A4 symbol: Caution: moving machinery (356 x 508 mm source). 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. Original editable CC0 vector drawing. Overall 210 x 297 x 0 mm. Nominal size: 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • A4 symbol: Caution: moving machinery (254 x 356 mm source)dxfOpen the drawing
    A4 symbol: Caution: moving machinery (254 x 356 mm source)

    A4 symbol: Caution: moving machinery (254 x 356 mm source). 210 x 297 mm A4 frame; 190.000 x 266.299 mm artwork; A3 at 1:1. Original editable CC0 vector drawing. Overall 210 x 297 x 0 mm. Nominal size: 210 x 297 mm A4 frame; 190.000 x 266.299 mm artwork; A3 at 1:1. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • A4 symbol: Caution: moving machinery (178 x 254 mm source)dxfOpen the drawing
    A4 symbol: Caution: moving machinery (178 x 254 mm source)

    A4 symbol: Caution: moving machinery (178 x 254 mm source). 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. Original editable CC0 vector drawing. Overall 210 x 297 x 0 mm. Nominal size: 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • A4 symbol: Caution: hot surface (356 x 508 mm source)dxfOpen the drawing
    A4 symbol: Caution: hot surface (356 x 508 mm source)

    A4 symbol: Caution: hot surface (356 x 508 mm source). 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. Original editable CC0 vector drawing. Overall 210 x 297 x 0 mm. Nominal size: 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • A4 symbol: Caution: hot surface (254 x 356 mm source)dxfOpen the drawing
    A4 symbol: Caution: hot surface (254 x 356 mm source)

    A4 symbol: Caution: hot surface (254 x 356 mm source). 210 x 297 mm A4 frame; 190.000 x 266.299 mm artwork; A3 at 1:1. Original editable CC0 vector drawing. Overall 210 x 297 x 0 mm. Nominal size: 210 x 297 mm A4 frame; 190.000 x 266.299 mm artwork; A3 at 1:1. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • A4 symbol: Caution: hot surface (178 x 254 mm source)dxfOpen the drawing
    A4 symbol: Caution: hot surface (178 x 254 mm source)

    A4 symbol: Caution: hot surface (178 x 254 mm source). 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. Original editable CC0 vector drawing. Overall 210 x 297 x 0 mm. Nominal size: 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • A4 symbol: Caution: high voltage (356 x 508 mm source)dxfOpen the drawing
    A4 symbol: Caution: high voltage (356 x 508 mm source)

    A4 symbol: Caution: high voltage (356 x 508 mm source). 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. Original editable CC0 vector drawing. Overall 210 x 297 x 0 mm. Nominal size: 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • A4 symbol: Caution: high voltage (254 x 356 mm source)dxfOpen the drawing
    A4 symbol: Caution: high voltage (254 x 356 mm source)

    A4 symbol: Caution: high voltage (254 x 356 mm source). 210 x 297 mm A4 frame; 190.000 x 266.299 mm artwork; A3 at 1:1. Original editable CC0 vector drawing. Overall 210 x 297 x 0 mm. Nominal size: 210 x 297 mm A4 frame; 190.000 x 266.299 mm artwork; A3 at 1:1. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • A4 symbol: Caution: high voltage (178 x 254 mm source)dxfOpen the drawing
    A4 symbol: Caution: high voltage (178 x 254 mm source)

    A4 symbol: Caution: high voltage (178 x 254 mm source). 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. Original editable CC0 vector drawing. Overall 210 x 297 x 0 mm. Nominal size: 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • A4 symbol: Caution: confined space (356 x 508 mm source)dxfOpen the drawing
    A4 symbol: Caution: confined space (356 x 508 mm source)

    A4 symbol: Caution: confined space (356 x 508 mm source). 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. Original editable CC0 vector drawing. Overall 210 x 297 x 0 mm. Nominal size: 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • A4 symbol: Caution: confined space (254 x 356 mm source)dxfOpen the drawing
    A4 symbol: Caution: confined space (254 x 356 mm source)

    A4 symbol: Caution: confined space (254 x 356 mm source). 210 x 297 mm A4 frame; 190.000 x 266.299 mm artwork; A3 at 1:1. Original editable CC0 vector drawing. Overall 210 x 297 x 0 mm. Nominal size: 210 x 297 mm A4 frame; 190.000 x 266.299 mm artwork; A3 at 1:1. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • A4 symbol: Caution: confined space (178 x 254 mm source)dxfOpen the drawing
    A4 symbol: Caution: confined space (178 x 254 mm source)

    A4 symbol: Caution: confined space (178 x 254 mm source). 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. Original editable CC0 vector drawing. Overall 210 x 297 x 0 mm. Nominal size: 210 x 297 mm A4 frame; 190.000 x 271.124 mm artwork; A3 at 1:1. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • Safety signage legend: notice, information and wayfindingdxfOpen the drawing
    Safety signage legend: notice, information and wayfinding

    Safety signage legend: notice, information and wayfinding. 1800 x 900 mm native index layout; A3 landscape at 1:5. Original editable CC0 vector drawing. Overall 1800 x 900 x 0 mm. Nominal size: 1800 x 900 mm native index layout; A3 landscape at 1:5. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • Safety signage legend: hazard, mandatory and prohibitiondxfOpen the drawing
    Safety signage legend: hazard, mandatory and prohibition

    Safety signage legend: hazard, mandatory and prohibition. 1800 x 900 mm native index layout; A3 landscape at 1:5. Original editable CC0 vector drawing. Overall 1800 x 900 x 0 mm. Nominal size: 1800 x 900 mm native index layout; A3 landscape at 1:5. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • Title block templates A3 sheet - CAD CollectiondxfOpen the drawing
    Title block templates A3 sheet - CAD Collection

    A3 sheet with 7 individually named original CAD blocks and real sizes; DXF retains each block's 1:1 millimetre geometry. Print PDF or SVG at 1:20. Overall 8 x 5.5 x 0 m. Nominal size: A3. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • Tabloid title block - CAD BlockdxfOpen the drawing
    Tabloid title block - CAD Block

    Original tabloid title block, 432 x 279 mm graphic envelope. DXF is 1:1 in millimetres with a clean insertion origin; named A3 PDF/SVG proof included. Overall 432 x 279 x 0 mm. Nominal size: 431.8 x 279.4 mm. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • Spot level marker - CAD BlockdxfOpen the drawing
    Spot level marker - CAD Block

    Original spot level marker, 870 x 340 mm graphic envelope. DXF is 1:1 in millimetres with a clean insertion origin; named A3 PDF/SVG proof included. Overall 870 x 340 x 0 mm. Nominal size: 870 x 340 mm. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • Single section mark - CAD BlockdxfOpen the drawing
    Single section mark - CAD Block

    Original single section mark, 2030 x 620 mm graphic envelope. DXF is 1:1 in millimetres with a clean insertion origin; named A3 PDF/SVG proof included. Overall 2 x 0.6 x 0 m. Nominal size: 2030 x 620 mm. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • Simple north arrow - CAD BlockdxfOpen the drawing
    Simple north arrow - CAD Block

    Original simple north arrow, 300 x 1350 mm graphic envelope. DXF is 1:1 in millimetres with a clean insertion origin; named A3 PDF/SVG proof included. Overall 300 x 1350 x 0 mm. Nominal size: 300 x 1350 mm. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • Revision triangle - CAD BlockdxfOpen the drawing
    Revision triangle - CAD Block

    Original revision triangle, 400 x 346 mm graphic envelope. DXF is 1:1 in millimetres with a clean insertion origin; named A3 PDF/SVG proof included. Overall 400 x 346 x 0 mm. Nominal size: 400 x 346 mm. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • Rectangular revision cloud - CAD BlockdxfOpen the drawing
    Rectangular revision cloud - CAD Block

    Original rectangular revision cloud, 1100 x 700 mm graphic envelope. DXF is 1:1 in millimetres with a clean insertion origin; named A3 PDF/SVG proof included. Overall 1100 x 700 x 0 mm. Nominal size: 1100 x 700 mm. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • Orientation scale annotation A3 sheet - CAD CollectiondxfOpen the drawing
    Orientation scale annotation A3 sheet - CAD Collection

    A3 legend with 28 annotation blocks, individual display scales and real sizes. The DXF collection keeps full-size millimetre geometry; PDF/SVG use the labelled scale for each item. Overall 300 x 207.8 x 0 m. Nominal size: A3. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • Open north arrow - CAD BlockdxfOpen the drawing
    Open north arrow - CAD Block

    Original open north arrow, 480 x 1250 mm graphic envelope. DXF is 1:1 in millimetres with a clean insertion origin; named A3 PDF/SVG proof included. Overall 480 x 1250 x 0 mm. Nominal size: 480 x 1250 mm. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

  • Offset section mark - CAD BlockdxfOpen the drawing
    Offset section mark - CAD Block

    Original offset section mark, 2030 x 620 mm graphic envelope. DXF is 1:1 in millimetres with a clean insertion origin; named A3 PDF/SVG proof included. Overall 2 x 0.6 x 0 m. Nominal size: 2030 x 620 mm. DXF drawing at 1:1 in millimeters with named layers; opens in AutoCAD, LibreCAD, Revit and the viewer. Export to DWG, PDF, SVG and other formats from the viewer. Drawn at nominal real-world dimensions for layout and documentation; verify against local codes and the actual product before construction. Original Innerscene model, released CC0.

Looking for 3D parts and models? Browse the 3D Parts Library (3576).

Request a Drawing

If the library doesn’t have what you need, tell us. Requests decide what we add next. Leave an email and we’ll send you one message when it’s added.

Share Your Drawings

Have blocks, details or plans worth reusing? Upload DWG, DXF or PDF files, or a zip of them, and describe each one. Everything is reviewed before it appears, released under CC0, and kept for 1 to 5 years depending on file size. You can also add a single file from the viewer’s Share dialog. See the library terms.

Contribute drawings

Parts here are contributed by their authors or come from public-domain collections. If you believe a file infringes your rights, use Report on its viewer page or see our copyright policy.