| Item Name | Washer Recessed |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-596-1766 (005961766) |
| NCB Code | USA (00) |
| Manufacturer | Dover Engineered Systems Inc, National Aerospace Standards, Abb Kent Taylor Inc, Pilatus Aircraft Ltd, Inspektorat Wsparcia Sil Zbrojnych |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| 21317 FIND 41 | dover engineered systems inc | washer recessed | RFQ |
| MS20002C4 | national aerospace standards | washer recessed | RFQ |
| BC22P301 | abb kent taylor inc | washer recessed | RFQ |
| 938.75.11.101 | pilatus aircraft ltd | washer recessed | RFQ |
| NAS143-4C | national aerospace standards | washer recessed | RFQ |
| 52103 FIND 52 | dover engineered systems inc | washer recessed | RFQ |
| 5310PL0724759 | inspektorat wsparcia sil zbrojnych | washer recessed | RFQ |
| 21835 FIND 52 | dover engineered systems inc | washer recessed | RFQ |
| 21808 FIND 27 | dover engineered systems inc | washer recessed | RFQ |
| 143-4C | national aerospace standards | washer recessed | RFQ |
| 21170-48 | dover engineered systems inc | washer recessed | RFQ |
| 21342 FIND 45 | dover engineered systems inc | washer recessed | RFQ |
| 21110 FIND 41 | dover engineered systems inc | washer recessed | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.252 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM |
| ABMD | RECESS DIAMETER | 0.334 INCHES MINIMUM AND 0.344 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.068 INCHES MINIMUM AND 0.088 INCHES MAXIMUM |
| CSTM | RECESS ANGLE | 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM |
| MATT | MATERIAL | STEEL COMP 1330 OVERALL OR STEEL COMP 4130 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | RECESSED |
| Relevant Components for NSN - 5310-00-596-1766, 5310005961766 | ||||
| 5305-00-000-0094 (5305000000094) | 5305-00-001-1366 (5305000011366) | 5305-00-001-1367 (5305000011367) | 5305-00-001-1568 (5305000011568) | |
| 5305-00-001-1569 (5305000011569) | 5305-00-001-1837 (5305000011837) | 5305-00-001-1918 (5305000011918) | 5305-00-001-1926 (5305000011926) | |
| 5305-00-001-1948 (5305000011948) | 5305-00-001-1963 (5305000011963) | 5305-00-001-2011 (5305000012011) | 5305-00-001-2012 (5305000012012) | |
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