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Source Control Drawings

Source Control Drawings

Source Control Drawings

MadMango (Mechanical) 25 Mar 03 16:32
Source Control Drawings are mainly used for single source items. You should consider making a Vendor Item Control Drawing instead, where you can have multiple sources.

You should list the Supplier information (name, address, part number) of the part you are sourcing, including Quality Requirements, Performance Data, interchangability of the part.

You need "Source Control Drawing" printed on the drawing, .25" tall.

You need 2 general notes:
1- Only the item described on this drawing when procured from the vendor listed hereon is approved by (your company) for use in the application specified heropn. A substitute item shall not be used without prior approval by (your company).

2- Identification of the approved source hereon is not to be construed as a guarantee of present or continued availability as a source of supply for the items described onthe drawing.

Try to get a hold of ASME Y14.24M for further information.

Moonraker72 Input:
This information is misleading. See ASME Y14.24 Drawing Types.
Before you quote the spec, READ the spec.

The Spec is very clear on this.
Sourec Control Drawings are only used for Vendor Items IF THERE IS A SPECIFIC QUALIFICATION TEST required.
If there is No Specific Qualification Test, then it is a VENDOR ITEM DRAWING.
Any number of vendors can provide thier component for a Source Control Drawing if they have their Vendor Item Product TESTED AND APPROVED. If approved, the vendor is added to the vendor table just like any Vendor Item Drawing.

So many people think that they can just say "Source Control Drawing" and it locks them in as the only vendor. This is NOT what ASME Y14.24 says.
ASMY Y14.24:
8.2 Vendor Item Control Drawing (Fig. 181
NOTE: A vendor item control drawing was formerly called a specification control drawing or vendor item drawing.
8.2.1 Description. A vendor item control drawing provides an engineering description and acceptance, criteria for commercial items or vendor-developed items that are procurable from a specialized segment of industry.

8.3 Source Control Drawing (Fig. 19)
8.3.1 Description. A source control drawing provides an engineering description, qualification requirements, and acceptance criteria for commercial items or vendor-developed items procurable from a specialized segment of industry, that provide the performance, installation, interchangeability, or other characteristics required for critical applications. The drawing provides a list of approved sources of supply and the vendor’s item identification for the item(s) that have been qualified and approved for use in the critical application(s).

RE: Source Control Drawings

One last quote form ASMEY14.24 A source control drawing shall not be used to delineate
(a) an item which does not require qualification in advance of a procurement action. If qualification is not required, the item is normally a candidate for vendor item control drawing coverage.
(b) an altered item, selected item, or item delineated by a nationally recognized standard unless, in the latter case, qualification for the specific application(s) is required.

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