Part Number
Part Number:
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.
CAGE Information
| Code | Company |
|---|---|
| 78567 | SPECO CORP |
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 |
|---|---|---|
| ALME | MATERIAL HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM |
| ABXV | BORE DIAMETER | 0.6310 INCHES MINIMUM AND 0.6320 INCHES MAXIMUM |
| ABPR | FIRST STEP DIAMETER | 1.3200 INCHES NOMINAL |
| FEAT | SPECIAL FEATURES | YSIX HOLES,0.313 IN. MIN AND 0.318 IN. MAX DIA BY 0.100 IN. DEEP ON FIRST STEP DIA EQUALLY SPACED ON 1.000 IN. DIA BOLT CIRCLE; ONE KEYWAY IN BORE 0.127 IN. MIN AND 0.130 IN. MAX W,0.065 IN. MIN AND 0.069 IN. MAX DEEP BY 0.300 IN. LG |
| BBRB | END DIAMETER | 0.7470 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM |
| APGF | DESIGN TYPE | SOLID |
| MATL | MATERIAL | STEEL,ASTM A322,OR ASTM A331,COMP 4340 |
| STYL | STYLE DESIGNATOR | SEAT |
| BZDH | DISTANCE FROM END TO FIRST STEP | 0.1600 INCHES NOMINAL |
| ABKW | OVERALL HEIGHT | 0.3000 INCHES NOMINAL |
| SURF | SURFACE TREATMENT | OXIDE,MIL-C-13924,CLASS 2 |