| Item Name | Nut Plain Castellated Hexagon |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-637-8819 (006378819) |
| NCB Code | USA (00) |
| Manufacturer | National Aerospace Standards Com, Sikorsky Aircraft Corporation, Automatic Screw Machine Products Inc, Aeronautical Standards Group, Military Specifications |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| AN320C20 | national aerospace standards com | nut plain castellated hexagon | 80205 | RFQ |
| AN320C20 | sikorsky aircraft corporation | nut plain castellated hexagon | 78286 | RFQ |
| AN320C20 | automatic screw machine products inc | nut plain castellated hexagon | 92595 | RFQ |
| AN320C20 | aeronautical standards group | nut plain castellated hexagon | 88044 | RFQ |
| MILN6034 | military specifications | nut plain castellated hexagon | 81349 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| ACTA | NUT STYLE | CASTELLATED,HEXAGON |
| ADEA | NUT HEIGHT | 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM |
| ASDB | WIDTH ACROSS FLATS | 1.852 INCHES MINIMUM AND 1.877 INCHES MAXIMUM |
| BZRR | THREAD SERIES | UNF |
| CMLP | THREAD QUANTITY PER INCH | 12 |
| CQJX | NOMINAL THREAD SIZE | 1.250 INCHES |
| CRSQ | COUNTERSINK ANGLE | 109.0 DEGREES MINIMUM NUT AND 111.0 DEGREES MAXIMUM NUT |
| CRTM | BEARING SURFACE TYPE | WASHER FACED |
| MATT | MATERIAL | STEEL CORROSION RESISTING OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| Components Related to NSN - 5310-00-637-8819, 5310006378819 | ||||
| 5340-01-169-2963 (5340011692963) | 5310-01-158-6265 (5310011586265) | 5315-01-608-8364 (5315016088364) | 5330-01-510-3005 (5330015103005) | |
| 5365-01-446-8973 (5365014468973) | 5340-01-487-3594 (5340014873594) | 5340-01-557-7739 (5340015577739) | 5331-00-625-8831 (5331006258831) | |
| 5306-01-648-2938 (5306016482938) | 5307-01-106-3946 (5307011063946) | 5305-00-050-9241 (5305000509241) | 5360-01-598-3689 (5360015983689) | |
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