Part Number
Definition:
A WASHER OF NONRESILIENT MATERIAL USUALLY HAVING TWO PARALLEL BEARING SURFACES. THE OUTSIDE AND/OR INSIDE EDGES HAVE ONE OR MORE PROTUBERANCES. THE ENDS AND/OR EDGES MAY BE PREBENT AT ANY ANGLE OR THE PROTUBERANCES MAY BE PREBENT AT ANY ANGLE TO THE BEARING SURFACES. THE KEYS OR LUGS MAY BE FITTED INTO KEYWAYS IN ADJACENT MATERIAL OR THEY MAY BE BENT OVER AFTER APPLICATION TO HOLD OR LOCK ONE OR MORE ITEMS IN PLACE. EXCLUDES THRUST TYPE WASHER.
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 |
|---|---|---|
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 5.500 INCHES NOMINAL |
| AATB | WIDTH BETWEEN FLATS | 3.877 INCHES MINIMUM AND 3.882 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL OVERALL AND NICKEL ALLOY OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE OVERALL AND QQ-N-281,CLASS A FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | KEY |
| ABKV | OUTSIDE DIAMETER | 4.625 INCHES MINIMUM AND 4.645 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.078 INCHES NOMINAL |
| AAUB | HOLE DIAMETER | 4.140 INCHES MINIMUM AND 4.150 INCHES MAXIMUM |
| ABMQ | EXTERNAL KEY QUANTITY | 19 |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| ABLC | EXTERNAL STRAIGHT KEY WIDTH | 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM |