3 Title Blocks and Part Lists

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• Describe drawing sheet sizes and formats• Identify marginal information and zoning methods

for drawing sheets• Identify the elements of the title block as defined

by industry standards• Explain the techniques for identifying parts of an

assembly drawing as represented in a basic parts list

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Sheet Size and Format

• Engineering system– A 8.5″ x 11″– B 11″ x 17″

• Architectural system– A 9″ x 12″– B 12″ x 18″

• Metric system– A4– A3

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Sheet Size and Format

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Typical Border and Title Blocks

• Items to note:– Title blocks– Borders and zones– Revision history– Optional number block– Revision status of sheets– Application block– Tolerance and projection

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Typical Border and Title Blocks

• (1) Title block for A, B, and C size• (2) Title block for D, E, and F size• (3) Revision history block• (4) Optional margin drawing number block• (5) Revision status of sheets block• (6) Optional application block• (7) Tolerance and projection block• (8) Rounded corners optional on all sheets

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Typical Border and Title Blocks

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Basic Title Block Content

• Most common elements:– Company name– Drawing number– Title or part name– Number of sheets– Paper size– Weight– Scale– CAGE code

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Basic Title Block Content

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Basic Title Block Content

• Drawn and approved area:– Project number– Drawn by– Checked by– Approved by– Issue date

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Intermediate Title Block Content

• Tolerances and material information:– Material specification– Finish area– General tolerances

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Application Block

• Application block options:– Next assembly used on– Final assembly used on– Multiple “dash” numbers, if more than one part is

represented on the drawing

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Revision History Block

• Revision history block options:– Revision letter (status)– Date of revision– Revision record number (ECO number)– Initials for approval, etc.

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Part Lists

• Part list options:– Part ID letter (mark)– Quantity– Part number– Part description

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What Do You See?

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• What is the standard size for a C-size sheet and in what mode or format is it?

The sheet is 17 22 in landscape mode (orientation)

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• What is the purpose of zoning?

It provides a means of locating details of parts or revision notes, similar to the zones on a road map

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• Identify four components of this title block

Tolerance block, approval block, name/address, drawing number, drawing title, sheet area, size area, weight area, scale area, parts list

Permission granted to reproduce for educational use only.

• What are balloons on a drawing?

Balloons are used as a means of identifying parts on the drawing and correlating the part to the parts list