| Item Name | Bolt Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 01-322-7318 (013227318) |
| NCB Code | USA (01) |
| Manufacturer | Inspektorat Wsparcia Sil Zbrojnych, Society Of Automotive Engineers Inc, Sae International, Military Standards Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.626 INCHES NOMINAL |
| AASB | FASTENER LENGTH | 1.188 INCHES NOMINAL |
| AASK | HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| AASU | HEAD HEIGHT | 0.330 INCHES NOMINAL |
| AATB | WIDTH BETWEEN FLATS | 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| AATC | EXTENDED WASHER DIAMETER | 0.438 INCHES NOMINAL |
| AATD | EXTENDED WASHER THICKNESS | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM |
| AAUR | GRIP DIAMETER | 0.2494 INCHES MINIMUM AND 0.2499 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| ANEE | GRIP LENGTH | 0.562 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES GRIP |
| MATT | MATERIAL | IRON ALLOY 660 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| Relevant Components for NSN - 5306-01-322-7318, 5306013227318 | ||||
| 5306-00-697-8525 (5306006978525) | 5325-00-985-6639 (5325009856639) | 5315-01-538-5036 (5315015385036) | 5330-01-500-4347 (5330015004347) | |
| 5320-00-435-9211 (5320004359211) | 5306-01-210-0742 (5306012100742) | 5306-01-241-6269 (5306012416269) | 5305-00-137-3117 (5305001373117) | |
| 5340-14-386-1394 (5340143861394) | 5330-00-907-1043 (5330009071043) | 5310-01-513-7467 (5310015137467) | 5360-01-045-7961 (5360010457961) | |
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