Part Number
Definition:
A WASHER, ROUND IN SHAPE, HAVING A CENTRALLY LOCATED HOLE. ONE BEARING SURFACE IS FLAT, THE OTHER SURFACE IS IN THE FORM OF A RAISED SHOULDER (BOSS) HAVING A FLAT BEARING SURFACE. EITHER OR BOTH OF THE BEARING SURFACES MUST BE BROKEN BY A COUNTERBORE, COUNTERSINK, OR SIMILAR SHAPED RECESS. THE THICKNESS OF THE SHOULDER (BOSS) MUST NOT EXCEED 25 PERCENT OF THE SHOULDER (BOSS) DIAMETER. FOR ITEMS HAVING A SHOULDER (BOSS) OF GREATER THICKNESS, USE BEARING, SLEEVE; BUSHING, SLEEVE; OR SPACER, SLEEVE. EXCLUDES INSULATOR, WASHER AND THRUST TYPE WASHERS.
CAGE Information
| Code | Company |
|---|---|
| 84955 | KAMAN AEROSPACE CORPORATION DBA HELI |
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 |
|---|---|---|
| AAVH | SHOULDER DIAMETER | 0.450 INCHES NOMINAL |
| MATT | MATERIAL | STEEL COMP 4130 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| ABPX | MATERIAL THICKNESS | 0.062 INCHES NOMINAL |
| CSYM | SURFACE FINISH | 100.0 MICROINCHES BOTTOM |
| CSYM | SURFACE FINISH | 100.0 MICROINCHES OUTER |
| CSYM | SURFACE FINISH | 100.0 MICROINCHES COUNTERBORE FACE |
| CSYM | SURFACE FINISH | 100.0 MICROINCHES COUNTERBORE WALL |
| CSYM | SURFACE FINISH | 100.0 MICROINCHES INNER |
| STYL | STYLE DESIGNATOR | SHOULDERED AND RECESSED |
| AAUB | HOLE DIAMETER | 0.328 INCHES NOMINAL |
| CQFM | HARDNESS RATING | 92.3 ROCKWELL B MINIMUM AND 26.0 ROCKWELL C MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.820 INCHES NOMINAL |
| CSYM | SURFACE FINISH | 40.0 MICROINCHES TOP |
| ABMG | SHOULDER HEIGHT | 0.025 INCHES MINIMUM AND 0.035 INCHES MAXIMUM |
| CSYM | SURFACE FINISH | 100.0 MICROINCHES SHOULDER FACE |