Part Number
Definition:
A WASHER OF ANY PERIPHERAL SHAPE HAVING A CENTRALLY LOCATED HOLE. BOTH BEARING SURFACES ARE PARALLEL AND FLAT, BUT ONE OR BOTH OF THE BEARING SURFACES MUST BE BROKEN BY A COUNTERBORE, COUNTERSINK, OR SIMILARLY SHAPED RECESS. THE THICKNESS MUST NOT EXCEED 25 PER CENT OF THE OUTSIDE DIAMETER OR THE LARGEST OUTSIDE DIMENSION. THE MAXIMUM LIMIT OF THE TOLERANCE OR RANGE APPLIED TO THE THICKNESS AND/OR LARGEST OUTSIDE DIMENSION MUST BE USED TO DETERMINE COMPLIANCE. EXCLUDES WASHER, CONCAVE, RETAINER, PACKING, AND THRUST TYPE WASHERS. SEE ALSO SPACER, SLEEVE; AND SPACER, STEPPED.
CAGE Information
| Code | Company |
|---|---|
| 78286 | SIKORSKY AIRCRAFT CORPORATION |
Federal Supply Class
Title
NUTS AND WASHERS
Inclusions:
INCLUDES LOCKNUTS; EYE NUTS; PLAIN NUTS; CASTELLATED NUTS; WING NUTS; PLATE NUTS; PUSH ON NUTS; CONCAVE AND CONVEX WASHERS; FLAT WASHERS; KEYED WASHERS; LOCK WASHERS; SHOULDERED WASHERS; SPLIT WASHERS.
Exclusions:
EXCLUDES BEARING THRUST WASHERS (FSC 3120); SHIMS (FSC 5365); RING SPACERS (FSC 5365); PLATE SPACERS (FSC 5365); LOCK RINGS (FSC 5365).
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| CRKG | BOTTOM RECESS ANGLE | 60.0 DEGREES NOMINAL |
| ABKV | OUTSIDE DIAMETER | 0.780 INCHES NOMINAL |
| MATT | MATERIAL | STEEL COMP 630 OVERALL |
| CSML | BOTTOM RECESS DIAMETER | 0.3146 INCHES MINIMUM AND 0.3246 INCHES MAXIMUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | SS8435,FSCM 78286 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| CRSD | TOP RECESS ANGLE | 60.0 DEGREES NOMINAL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5622 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| AAUB | HOLE DIAMETER | 0.280 INCHES MINIMUM AND 0.290 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM |
| STYL | STYLE DESIGNATOR | RECESSED BOTH SIDES |
| CQJW | TOP RECESS DIAMETER | 0.3146 INCHES MINIMUM AND 0.3246 INCHES MAXIMUM |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |