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 |
|---|---|---|
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL OR CADMIUM OVERALL |
| AAUB | HOLE DIAMETER | 3.625 INCHES NOMINAL |
| MATT | MATERIAL | NICKEL ALLOY OVERALL OR STEEL COMP 302 OVERALL OR STEEL COMP 4 OVERALL |
| FEAT | SPECIAL FEATURES | THREE KEYS 0.375 IN.W WITH 0.391 IN. DIA HOLE CENTRALLY LOCATED |
| ABLF | EXTERNAL PREBENT KEY WIDTH | 0.3125 INCHES NOMINAL |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 5.124 INCHES NOMINAL |
| ABKV | OUTSIDE DIAMETER | 4.188 INCHES NOMINAL |
| ABMQ | EXTERNAL KEY QUANTITY | 18 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-5059 COMP G COND A MIL SPEC 2ND MATERIAL RESPONSE OVERALL OR QQ-S-636 COND 4 FED SPEC 3RD MATERIAL RESPONSE OVERALL |