AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Nut Plain Hexagon |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-205-3921 (002053921) |
| NCB Code | USA (00) |
| Manufacturer | Federal Specifications, Military Standards Corp |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| FFN836 | federal specifications | nut plain hexagon | RFQ |
| MS51967-59 | military standards corp | nut plain hexagon | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| ACTA | NUT STYLE | HEXAGON |
| ADEA | NUT HEIGHT | 2.518 INCHES MINIMUM AND 2.638 INCHES MAXIMUM |
| ASDB | WIDTH ACROSS FLATS | 4.350 INCHES MINIMUM AND 4.500 INCHES MAXIMUM |
| BZRR | THREAD SERIES | UNC |
| CMLP | THREAD QUANTITY PER INCH | 40 |
| CQFM | HARDNESS RATING | 90.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| CQJX | NOMINAL THREAD SIZE | 3.000 INCHES |
| CRTM | BEARING SURFACE TYPE | CHAMFERED OR WASHER FACED |
| FEAT | SPECIAL FEATURES | CERTIFIED FREE FROM MERCURY CONTAMINATION |
| MATT | MATERIAL | STEEL OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND 4 STYLE AND B GRADE |
| ZZZX | DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY SPECIAL FEATURES |
| Relevant Components for NSN - 5310-00-205-3921, 5310002053921 | ||||
| 5305-00-151-0390 (5305001510390) | 5305-00-162-0212 (5305001620212) | 5330-01-021-6193 (5330010216193) | 5306-01-667-2305 (5306016672305) | |
| 5305-00-702-7578 (5305007027578) | 5306-01-467-0619 (5306014670619) | 5340-14-507-0973 (5340145070973) | 5330-01-545-5049 (5330015455049) | |
| 5331-01-433-9967 (5331014339967) | 5330-01-176-0563 (5330011760563) | 5330-20-001-0516 (5330200010516) | 5305-00-550-9932 (5305005509932) | |
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