National Stock Number (NSN) Output Data
NSN:
NIIN:
Item Name:
SEAT , HELICAL COMPRESSION SPRING
Definition:
A CIRCULAR ITEM, USUALLY HAVING A FLAT OR GROOVED FLANGE, BOSS(ES), AND/OR COUNTERBORE DESIGNED TO ACCOMMODATE THE END OF THE SPRING. IT IS USED TO POSITION THE SPRING, BUT DOES NOT ENCASE THE SPRING OR RESTRAIN LATERAL MOTION. IT MAY BE USED IN CONJUNCTION WITH A RETAINER, HELICAL COMPRESSION SPRING. EXCLUDES WASHER (1), (AS MODIFIED); SEAT, BALL SOCKET AND HOLDER, SPRING. SEE ALSO ROTOR, ENGINE POPPET VALVE.
Reference/Part Number
| Part Number | CAGE | Status | RNCC | RNVC | DAC | RNAAC | MSDS | SADC |
|---|---|---|---|---|---|---|---|---|
| 491998 | 77445 | A | 3 | 2 | X | XX |
CAGE Information
| Code | Company |
|---|---|
| 77445 | UNITED TECHNOLOGIES CORPORATION DBA |
Federal Supply Class
Title
HARDWARE, COMMERCIAL
Inclusions:
INCLUDES ACCESS COVERS; BUMPERS; CASTERS; CABINET AND DOOR HARDWARE; CLEVISES; HINGES; LATCHES; STRAPS AND STRAPPING; TURNBUCKLES; WEBBED STRAPS.
Exclusions:
EXCLUDES WEAPONS SYSTEM HARDWARE (FSC 5342).
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| BBRB | END DIAMETER | 0.3100 INCHES MINIMUM AND 0.3140 INCHES MAXIMUM |
| BZLN | SECOND COUNTERBORE DIAMETER | 0.7700 INCHES MINIMUM AND 0.7900 INCHES MAXIMUM |
| SURF | SURFACE TREATMENT | ANODIZED |
| ALME | MATERIAL HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM |
| MATL | MATERIAL | STEEL, AMS 5643 |
| ABKW | OVERALL HEIGHT | 0.5400 INCHES NOMINAL |
| BZDL | COUNTERBORE LENGTH | 0.2600 INCHES MINIMUM AND 0.2800 INCHES MAXIMUM |
| ABXV | BORE DIAMETER | 0.3100 INCHES MINIMUM AND 0.3140 INCHES MAXIMUM |
| ABPS | FIRST STEP LENGTH | 0.0900 INCHES NOMINAL |
| APGF | DESIGN TYPE | SOLID |
| ABPR | FIRST STEP DIAMETER | 0.9490 INCHES NOMINAL |
| STYL | STYLE DESIGNATOR | SEAT |
| ABPT | SECOND STEP DIAMETER | 1.2860 INCHES MINIMUM AND 1.2880 INCHES MAXIMUM |
| AAWY | COUNTERBORE DIAMETER | 0.4800 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM |
| BZDH | DISTANCE FROM END TO FIRST STEP | 0.3550 INCHES MINIMUM AND 0.3650 INCHES MAXIMUM |
| BZDM | SECOND COUNTERBORE LENGTH | 0.1050 INCHES MINIMUM AND 0.1150 INCHES MAXIMUM |
| ZZZV | FSC APPLICATION DATA | HOUSING ASSY,ENGINE ACFT,P/N 491980 |