Part Number
Definition:
A THIN FLAT METAL OR PLASTIC ITEM OF VARIOUS PERIPHERAL SHAPES HAVING A SOLID OR LAMINATED CROSS-SECTION. IT IS DESIGNED TO MAINTAIN A PREDETERMINED DISTANCE BETWEEN TWO SURFACES. FOR ROUND ITEMS WITHOUT A HOLE AND HAVING A SOLID RECTANGULAR CROSS-SECTION USE DISK, SOLID, PLAIN. ITEMS WITH EITHER (1) A SOLID (NOT LAMINATED) CROSS-SECTION, OR (2) A NON-SEPARABLE LAMINATED CROSS-SECTION WITH ONE HOLE CENTRALLY LOCATED, MUST HAVE A THICKNESS LESS THAN 0.006 INCH (0.152 MM) FOR ITEMS LESS THAN 1/4 INCH (6.35 MM) OUTSIDE DIAMETER OR SHORTEST DISTANCE ACROSS PERIPHERAL FLATS, AND LESS THAN 0.016 INCH (0.406 MM) FOR ITEMS 1/4 INCH (6.35 MM) OR MORE OUTSIDE DIAMETER, OR SHORTEST DISTANCE ACROSS PERIPHERAL FLATS. FOR ITEMS WITH THICKNESS GREATER THAN THOSE INDICATED ABOVE, SEE SPACER, PLATE; WASHER, FLAT AND SPACER, RING. WHEN THICKNESS AND/OR OUTSIDE DIAMETER OR SHORTEST DISTANCE ACROSS PERIPHERAL FLATS IS DESIGNATED AS A TOLERANCE DIMENSION, THE MAXIMUM DIMENSION WILL BE USED TO DETERMINE COMPLIANCE. SEE ALSO SHIM STOCK, LAMINATED; SHIM STOCK ASSORTMENT, GASKET; AND BEARING, WASHER, THRUST.
CAGE Information
| Code | Company |
|---|---|
| 18876 | U S ARMY AVIATION AND MISSILE COMMAN |
Federal Supply Class
Title
BUSHINGS, RINGS, SHIMS, AND SPAC
Inclusions:
INCLUDES EXTERNALLY THREADED RINGS; KEYED AND SERRATED LOCK RINGS; DEE RINGS; INSTRUMENT RETAINING RINGS; SHIM SETS AND ASSORTMENTS; PLATE SPACERS; RING SPACERS; SLEEVE SPACERS; STEPPED SPACERS; SPACER SETS AND ASSORTMENTS; SLEEVE BUSHINGS; MACHINE THREADED BUSHINGS; MACHINE THREADED PLUGS.
Exclusions:
EXCLUDES SLEEVE BEARINGS (FSC 3120); PIPE THREADED PLUGS (FSC 4730); PISTON RINGS (FSC 2520, 2805, 2810, 2815, 2825, 2990, 3040, 4310, AND 4820); RETAINING RINGS (FSC 5325); SHIM STOCK (FSC 9515).
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.177 INCHES MINIMUM AND 0.180 INCHES MAXIMUM |
| ADUE | APERTURE WIDTH | 0.414 INCHES MINIMUM AND 0.418 INCHES MAXIMUM |
| CQCF | CONSTRUCTION | ONE-PIECE |
| ADUZ | CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH | 1.214 INCHES MINIMUM AND 1.222 INCHES MAXIMUM |
| ABMK | OVERALL WIDTH | 1.625 INCHES NOMINAL |
| ADUP | OUTSIDE CORNER BEVEL LENGTH ALONG WIDTH | 0.062 INCHES NOMINAL |
| CTSC | OUTSIDE EDGE TO INSIDE EDGE SMALLEST DISTANCE ALONG LENGTH | 1.207 INCHES NOMINAL |
| MATT | MATERIAL | COPPER ALLOY |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-5541,TYPE 1,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE |
| ADUQ | OUTSIDE CORNER BEVEL LENGTH ALONG LENGTH | 0.062 INCHES NOMINAL |
| CTRH | OUTSIDE EDGE TO INSIDE EDGE SMALLEST DISTANCE ALONG WIDTH | 0.707 INCHES NOMINAL |
| ADUY | CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH | 1.276 INCHES MINIMUM AND 1.284 INCHES MAXIMUM |
| ABHP | OVERALL LENGTH | 1.625 INCHES NOMINAL |
| STYL | STYLE DESIGNATOR | NON-CIRCULAR W/BOLT HOLES |
| AECS | BOLT HOLE QUANTITY | 4 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE |
| ADUF | APERTURE LENGTH | 0.914 INCHES MINIMUM AND 0.918 INCHES MAXIMUM |
| ADVD | OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG WIDTH | 0.403 INCHES NOMINAL |
| SFTT | SURFACE TREATMENT | CHROMATE |
| ADVE | OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH | 0.341 INCHES NOMINAL |