Part Number
Part Number:
NSN:
NIIN:
Item Name:
WASHER , CONCAVE
Definition:
A WASHER WHICH IS ROUND WITH A CENTRALLY LOCATED HOLE. ONE BEARING SURFACE IS SMOOTH, FLAT, AND UNBROKEN, THE OTHER BEARING SURFACE IS SMOOTH, UNBROKEN, AND IS RECESSED TO FORM A CURVED OR SPHERICAL CONTOUR. SEE ALSO WASHER (1), CONVEX. EXCLUDES WASHER (1), RECESSED AND BEARING, WASHER, THRUST.
CAGE Information
| Code | Company |
|---|---|
| 15653 | ALCOA GLOBAL FASTENERS INC. |
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 |
|---|---|---|
| STYL | STYLE DESIGNATOR | CONCAVE |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| FEAT | SPECIAL FEATURES | LUBRICATE BPS NO.171 CETYL ALCOHOL DRY FILM REQUIRED ON SPHERICAL SEAT |
| CQBC | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| ABMH | RECESS DEPTH | 0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM |
| AAUB | HOLE DIAMETER | 0.348 INCHES MINIMUM AND 0.354 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.505 INCHES MINIMUM AND 0.515 INCHES MAXIMUM |
| MATT | MATERIAL | IRON ALLOY 660 OVERALL |
| ABPX | MATERIAL THICKNESS | 0.113 INCHES MINIMUM AND 0.123 INCHES MAXIMUM |
| ABGG | RADIUS | 0.305 INCHES MINIMUM AND 0.310 INCHES MAXIMUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |