Downloaded from https://www.everyspec.com MIL-STD-3001-4(AS) (2) If an identical part, appearing at several locations, is attached with different attaching parts, the part shall be indexed separately. (3) If more than one size or type of attaching part is used at different points on the part being attached, each size (with the pertinent attaching parts such as washer and nut) shall be given a separate index number so that the location of the different sizes and types may be readily identified in the illustration. 5.3.11.1.2 Part numbers.
All end items, repair parts and items of support equipment provisioned for the applicable maintenance level support of the article shall be listed by part number. Part numbers assigned to the parts listed shall appear as an entry under the heading "PART NUMBER." a. Parts not to be listed. The following parts shall not be listed: (1) Assembly detail parts that are permanently joined together. Parts that lose their identity by being welded or joined to other pieces as a permanent unit. This does not include riveted items provisioned for the applicable maintenance level of the manual. (2) Items made from bulk stock.
Items made from (raw) bulk stock such as lockwire, bonding braid, upholstery cloth, and friction tape. (3) Structural items. Except for structural repair IPBs, structural items such as stringers, stiffeners, skin, doublers, and gussets, which serve no purpose in description of parts relationship or specification of significant procured parts, except when required to maintain next higher assembly identity or to identify items having maintenance significance. (4) Detail parts for consumable items. Details of items SM&R coded for throwaway. (5) Substitute item.
A substitute item is an item which possesses such functional and physical characteristics as to be capable of being exchanged for another under specific conditions or for particular applications and without alteration of the item itself or those adjoining it. Degradation of equipment performance will result when substitute items are used. Substitute items shall not be listed, unless authorized by the requiring activity. b. Items without part numbers. (1) Equipment(s) that have not been assigned part numbers, shall have the type or model number placed in the "PART NUMBER" entry.
Either the type or model number shall be entered, for example, the one that corresponds to a national stock number (NSN) that has an assigned SM&R code. (2) If a vendor's part number is listed in the "PART NUMBER" entry, the type number, if applicable, shall be identified in the description. (3) Parts which have neither a part number nor a type and model number assigned shall have a dash (-) placed in the "PART NUMBER" entry. (4) Hardware procurable from normal commercial sources that does not have a part number assigned shall be identified by the abbreviation "COML" in the "PART NUMBER" entry.
Identifying information such as dimensions, material, and type shall be given after the description to enable replacement procurement from commercial sources. 19