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| Item Name | Nut Self Locking Hexagon |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-660-1938 (006601938) |
| NCB Code | USA (00) |
| Manufacturer | Fitz Aerospace Llc, Harvard Industries Inc, Zf Industrieantriebe Witten Gmbh, Cnh Industrial America Llc |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| 21NU040 | fitz aerospace llc | nut self locking hexagon | RFQ |
| 21U040 | harvard industries inc | nut self locking hexagon | RFQ |
| 21NU-040 | zf industrieantriebe witten gmbh | nut self locking hexagon | RFQ |
| 52-46-63 | zf industrieantriebe witten gmbh | nut self locking hexagon | RFQ |
| 21NU040 | harvard industries inc | nut self locking hexagon | RFQ |
| 131-461 | cnh industrial america llc | nut self locking hexagon | RFQ |
| 29NU-040 | harvard industries inc | nut self locking hexagon | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| ACTA | NUT STYLE | HEXAGON |
| ADEA | NUT HEIGHT | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM |
| ASDB | WIDTH ACROSS FLATS | 0.489 INCHES MINIMUM AND 0.503 INCHES MAXIMUM |
| AZKQ | TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |
| BZRR | THREAD SERIES | UNC |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CQJX | NOMINAL THREAD SIZE | 0.250 INCHES |
| CRTM | BEARING SURFACE TYPE | CHAMFERED |
| MATT | MATERIAL | STEEL COMP 1212 NUT |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5010 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-M-20693 COMP A TYPE1 MIL SPEC 1ST MATERIAL RESPONSE LOCKING INSERT OR MIL-M-20693 COMP B TYPE4 AND 4A MIL SPEC 2ND MATERIAL RESPONSE LOCKING INSERT |
| SFTT | SURFACE TREATMENT | ZINC OVERALL EXCEPT INSERT |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-Z-325,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| Relevant Components for NSN - 5310-00-660-1938, 5310006601938 | ||||
| 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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