Part Number
Definition:
AN ITEM OF ANY PERIPHERAL SHAPE USUALLY HAVING ONE FLAT OR SPHERICAL SURFACE AND A CENTRALLY LOCATED HOLE. IT IS DESIGNED FOR APPLICATIONS INVOLVING MOVING (KINETIC) LOADS. EXCEPT FOR ITEMS FABRICATED FROM BEARING QUALITY SYNTHETIC (PLASTIC) OR COMPOSED OF MULTILAYER MATERIAL, ONE BEARING SURFACE MUST EITHER HAVE A SPECIFIC SURFACE FINISH DESIGNATION OF 32 MICROINCH (0.8 MICROMETRE) OR LESS, ARITHMETICAL AVERAGE (AA) (ARITHMETIC MEAN DEVIATION) OR ONE OF THE FOLLOWING CONDITIONS: BE LAPPED OR GROUND; HAVE VISIBLE OR DETECTABLE MEANS OF LUBRICATION; GROOVES, INDENTATIONS; OR SELF-LUBRICATION. THE THICKNESS MUST NOT EXCEED 25 PERCENT OF THE OUTSIDE DIAMETER OF THE SHORTEST DISTANCE BETWEEN PERIPHERAL FLATS (WHEN THICKNESS AND/OR OUTSIDE DIAMETER IS DESIGNATED AS A TOLERANCE DIMENSION, THE MAXIMUM DIMENSION WILL BE USED TO DETERMINE COMPLIANCE). EXCLUDES STRAIGHT, TUBULAR (WITHOUT FLANGE) ITEMS HAVING A BEARING SURFACE(S) PARALLEL TO THE AXIS OF THE BORE ONLY. SEE ALSO WASHER, FLAT AND SPACER, SLEEVE.
CAGE Information
| Code | Company |
|---|---|
| 78286 | SIKORSKY AIRCRAFT CORPORATION |
Federal Supply Class
Title
BEARINGS, PLAIN, UNMOUNTED
Inclusions:
INCLUDES SLEEVE BEARINGS; SPLIT BEARINGS; WASHER TYPE BEARINGS; JEWEL BEARINGS.
Exclusions:
EXCLUDES ANTIFRICTION BEARINGS (FSC 3110); MOUNTED BEARINGS (FSC 3130).
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| MATT | MATERIAL | COPPER ALLOY INTERMEDIATE LAYER AND PLASTIC INTERMEDIATE LAYER AND LEAD ALLOY INTERMEDIATE LAYER |
| MATT | MATERIAL | COPPER ALLOY INTERMEDIATE LAYER AND PLASTIC INTERMEDIATE LAYER AND LEAD ALLOY INTERMEDIATE LAYER |
| MATT | MATERIAL | STEEL OUTER LAYER |
| CSYM | SURFACE FINISH | 90.0 MICROINCHES RIGHT SIDE |
| AAZK | WIDTH ACROSS FLATS | 4.7500 INCHES NOMINAL |
| ADUM | OVERALL THICKNESS | 0.0430 INCHES MINIMUM AND 0.0450 INCHES MAXIMUM |
| AAGR | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| CSYM | SURFACE FINISH | 90.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY |
| ABMX | CENTER HOLE SHAPE STYLE | ROUND |
| CSYM | SURFACE FINISH | 90.0 MICROINCHES LARGEST OUTSIDE DIAMETER |
| MATT | MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE INNER LAYER |
| ABKV | OUTSIDE DIAMETER | 5.0000 INCHES NOMINAL |
| STYL | STYLE DESIGNATOR | ROUND W/TWO FLATS |
| CSYM | SURFACE FINISH | 90.0 MICROINCHES LEFT SIDE |
| BZLX | CORNER SHAPE | SQUARE ALL CORNERS |
| ABMZ | DIAMETER | 3.4900 INCHES NOMINAL |