ASME Y14.100 - Engineering Drawing Practices2017
This Standard establishes the essential requirements and reference documents applicable to the preparation and revision of manual or computer generated engineering drawings and associated lists unless tailored by a specialty Standard. It is essential that this Standard be used in close conjunction with ASME Y14.24, ASME Y14.34, ASME Y14.35M, and ASME Y14.41. Incorporates Y14.42 on Digital Approval Systems.
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A number of parts or combination thereof that are joined together to perform a specific function and subject to disassembly without degradation of any of the parts (e.g., power shovel-front, fan assembly, audio- frequency amplifier). NOTE: The distinction between an assembly and a subassembly is determined by individual application. An assembly in one instance may be a subassembly in another instance where it forms a portion of a higher assembly.
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Bulk Items
Those constituents of an assembly or part (such as oil, wax, solder, cement, ink, damping fluid, grease, flux, welding rod, twine, or chain) that satisfy one or more of the following criteria: the quantity required cannot readily be predetermined; the physical nature of the material is such that it is not adaptable to pictorial representation; the finished size is obtainable through use of such tools as shears, pliers, or knives, without further machining operation; and the final configuration is such that it can be described in writing without the necessity of pictorial representation.
A five-character code that provides a unique activity identifier used by the government for activity identification. This method of activity identification has also been widely adopted by industry.
Company Standard
A document produced by a company that establishes engineering and technical limitations and applications for items, materials, processes, methods, designs, and engineering practices unique to that particular company.
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Any reproduction or duplication, in any media, of an original.
Any feature, such as tolerance, finish, material composition, manufacturing, assembly, or inspection process or product that, if nonconforming or missing, could cause the failure or malfunction of the critical safety item.
Critical Safety Item
A part, assembly, installation, or production system with one or more critical safety characteristics that, if not conforming to the design data or quality requirements, would result in an unsafe condition.
Critical Safety Process
Any fabrication, manufacturing, assembly, installation, maintenance, repair, or other process or procedure that implements a safety design feature or satisfies system safety requirements.
Current Design Activity
The design activity currently responsible for the design of an item. This may be the original design activity or a design activity to which the design responsibility has been transferred.
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Design Activity
An organization that has, or has had, responsibility for the design of an item.
The application of a unique identifier that distinguishes an activity or organization from another activity or organization. Examples of activity identification include activity name, activity name and address, or CAGE code.
An engineering document or digital data file(s) that discloses (directly or by reference), by means of graphic or textual presentations, or by combinations of both, the physical or functional requirements of an item.
Drawing Format
The arrangement and organization of information within a drawing. This includes such features as the size and arrangement of blocks, notes, lists, and revision information and use of optional or supplemental blocks.
Drawing Graphic Sheet
The two-dimensional geometric elements and annotations that define an item and the product definition elements of the sheet format in accordance with ASME Y14.1 or ASME Y14.1M.
Duplicate Original
A replica of an engineering drawing created to serve as the official record of the item when the original has been lost.
Engineering Data
Engineering documents such as drawings, associated lists, accompanying documents, specifications, standards, or other information prepared or used by a design activity and relating to the design, manufacture, procurement, testing, or inspection of items.
Family of Products
All products of the same classification, design, construction, material, type, etc., produced with the same production facilities, processes, and quality of material, under the same management and quality controls, but having the acceptable variety of physical and functional characteristics defined and specified in the applicable engineering documentation.
Inseparable Assembly
One item, or two or more items joined together, that is not normally subject to disassembly without destruction or impairment of designed use (e.g., transistor, composition resistor, screw, transformer, and gear).
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Interchangeable Item
An item that possesses functional and physical characteristics equivalent in performance to another item of similar or identical purposes, and is capable of being exchanged for the other item without selection for fit or performance, and without alteration of the items themselves or of adjoining items, except for adjustment.
A nonspecific term used to denote any unit or product, including materials, parts, assemblies, equipment, accessories, and computer software.
Item Identification
The Part or Identifying Number (PIN) for a specific item along with the original Design Activity Identification (DAI).
Master Drawing
A document that shows the dimensional limits or grid locations applicable to any or all parts of a rigid or flexible printed board, including the arrangements of conductive and nonconductive patterns or elements, size, type, and location of holes; and any other information necessary to describe the product to be fabricated (see IPC T-150).
Nonpart Drawing
An engineering drawing that provides requirements, such as procedures or instructions, applicable to an item when it is not convenient to include this information on the applicable part drawing (e.g., a test requirements drawing or logic diagram).
Textual information that further delineates the requirements of the item represented.
The current design activitys drawing on which the official revision record is kept.
Original Design Activity
The design activity originally responsible for the design and identification of an item whose drawing number and design activity identification is shown in the title block of the drawings and associated documents.
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One item, or two or more items joined together, that is not normally subject to disassembly without destruction or impairment of designed use (e.g., transistor, composition resistor, screw, transformer, and gear).
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The identifier assigned by the original design activity or by the controlling nationally recognized standard that uniquely identifies, relative to that design activity, a specific item.
Product Definition Data, Technical Data, Item, Feature, Drawing, Item. IdentificationIncludes materials, parts, components, subassemblies, assemblies, and equipment. The term product shall also encompass a family of products.
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Referenced Documents
Design activity standards, drawings, specifications, or other documents referenced on drawings or lists.
A document that describes essential technical requirements for material and the criteria for determining whether those requirements are met.
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A document that establishes technical criteria, methods, processes, and practices.
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Standardization Document
A document developed for the purpose of standardizing items, materials, processes, or procedures.
Two or more parts that form a portion of an assembly or a unit replaceable as a whole but having a part or parts that are individually replaceable - e.g., gun mount stand, window sash, recoil mechanism, floating piston, telephone dial, Intermediate Frequency (IF) strip, terminal board with mounted parts.
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Symmetrically Opposite Part
Those parts that are mirror images of each other.
A composite of equipment, skills, and techniques capable of performing or supporting an operational role or both. A complete system includes all equipment, related facilities, material, software, services, and personnel required for its operation and support to the degree that it can be considered a self- sufficient unit in its intended operational environment.
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The process by which the requirements of specifications, standards, and related documents are modified to be suitable for a specific application or project (see EIA-632).
An assembly or any combination of parts, subassemblies, and assemblies mounted together normally capable of independent operation in a variety of situations (e.g., hydraulic jack, electric motor, electronic power supply, internal combustion engine, electric generator, radio receiver). NOTE: The size of an item is a consideration in some cases. An electric motor for a clock may be considered as a part because it is not normally subject to disassembly.