| Item Name | Seat Helical Compression Spring |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5340 Hardware Commercial |
| National Item Identification Number (NIIN) | 01-132-8990 (011328990) |
| NCB Code | USA (01) |
| Manufacturer | Hamilton Sundstrand Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| AATA | COUNTERSINK ANGLE IN DEG | 30.0 |
| AAWY | COUNTERBORE DIAMETER | 0.4380 INCHES MINIMUM AND 0.4540 INCHES MAXIMUM |
| ABKW | OVERALL HEIGHT | 0.7400 INCHES MINIMUM AND 0.7600 INCHES MAXIMUM |
| ABPR | FIRST STEP DIAMETER | 0.7950 INCHES MINIMUM AND 0.8050 INCHES MAXIMUM |
| ABXV | BORE DIAMETER | 0.4380 INCHES MINIMUM AND 0.4400 INCHES MAXIMUM |
| ALME | MATERIAL HARDNESS RATING | 32.0 ROCKWELL C NOMINAL |
| APGF | DESIGN TYPE | SPLIT |
| AYRZ | COUNTERSINK DIAMETER | 0.5570 INCHES MINIMUM AND 0.5670 INCHES MAXIMUM |
| BBRB | END DIAMETER | 0.7950 INCHES MINIMUM AND 0.8050 INCHES MAXIMUM |
| BZDH | DISTANCE FROM END TO FIRST STEP | 0.6510 INCHES MINIMUM AND 0.6610 INCHES MAXIMUM |
| BZDL | COUNTERBORE LENGTH | 0.0890 INCHES MINIMUM AND 0.0990 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL,ASTM A108 |
| STYL | STYLE DESIGNATOR | SEAT |
| Components Related to NSN - 5340-01-132-8990, 5340011328990 | ||||
| 5330-00-154-7423 (5330001547423) | 5365-01-326-1135 (5365013261135) | 5306-01-053-6961 (5306010536961) | 5310-00-523-2141 (5310005232141) | |
| 5325-01-240-1213 (5325012401213) | 5360-01-089-4004 (5360010894004) | 5330-01-089-6878 (5330010896878) | 5330-01-125-9042 (5330011259042) | |
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