| 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) | 01-129-3971 (011293971) |
| NCB Code | USA (01) |
| Manufacturer | Parker Hannifin Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| AATA | COUNTERSINK ANGLE IN DEG | 45.0 |
| AATE | CHAMFER ANGLE IN DEG | 15.0 |
| AAWY | COUNTERBORE DIAMETER | 0.4000 INCHES NOMINAL |
| ABKW | OVERALL HEIGHT | 0.3250 INCHES NOMINAL |
| ABPR | FIRST STEP DIAMETER | 0.4650 INCHES MINIMUM AND 0.4750 INCHES MAXIMUM |
| ABPS | FIRST STEP LENGTH | 0.1700 INCHES NOMINAL |
| ABPT | SECOND STEP DIAMETER | 0.6100 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 0.3120 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM |
| APGF | DESIGN TYPE | SOLID |
| AYRZ | COUNTERSINK DIAMETER | 0.4700 INCHES NOMINAL |
| BBRB | END DIAMETER | 0.4290 INCHES NOMINAL |
| BZDH | DISTANCE FROM END TO FIRST STEP | 0.0750 INCHES NOMINAL |
| BZDL | COUNTERBORE LENGTH | 0.2550 INCHES NOMINAL |
| FEAT | SPECIAL FEATURES | NOT CASEHARDENED |
| MATT | MATERIAL | STEEL COMP 303 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582,TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE |
| SFTT | SURFACE TREATMENT | PASSIVATE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | PS13001,MCDONNELL DOUGLAS CORP MFR REF SINGLE TREATMENT RESPONSE |
| Relevant Components for NSN - 5340-01-129-3971, 5340011293971 | ||||
| 5320-01-093-5687 (5320010935687) | 5340-00-286-8500 (5340002868500) | 5310-00-797-4430 (5310007974430) | 5331-01-548-6940 (5331015486940) | |
| 5340-01-389-2408 (5340013892408) | 5340-01-499-3481 (5340014993481) | 5310-01-418-9739 (5310014189739) | 5320-01-419-8697 (5320014198697) | |
| 5340-01-681-6722 (5340016816722) | 5340-01-620-4639 (5340016204639) | 5340-01-481-2087 (5340014812087) | 5331-01-097-0869 (5331010970869) | |
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