NSN 5310-00-639-1820
Part Details | RECESSED WASHER
5310-00-639-1820 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.
Alternate Parts: 351789, 351789, 5310-00-639-1820, 00-639-1820, 5310006391820, 006391820
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 01, 1963 | 00-639-1820 | 15933 ( WASHER, RECESSED ) |
REFERENCE DRAWINGS & PICTURES
SPRING TENSION
Cross Reference | NSN 5310-00-639-1820
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 351789 | 98897 | LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN AERONAUTICS |
| 351789 | 63630 | SEANAIR MACHINE CO. INC. |
Technical Data | NSN 5310-00-639-1820
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | 5 SPRING TENSION |
| HOLE DIAMETER | 0.920 INCHES MINIMUM AND 0.930 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 1.470 INCHES MINIMUM AND 1.530 INCHES MAXIMUM |
| RECESS DIAMETER | 1.060 INCHES MINIMUM AND 1.070 INCHES MAXIMUM |
| MATERIAL THICKNESS | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| RECESS ANGLE | 90.0 DEGREES NOMINAL |