| Item Name | Washer Recessed |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-839-2020 (008392020) |
| NCB Code | USA (00) |
| Manufacturer | Avibank Mfg Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKV | OUTSIDE DIAMETER | 0.505 INCHES MINIMUM AND 0.523 INCHES MAXIMUM |
| ABKW | OVERALL HEIGHT | 0.216 INCHES MINIMUM AND 0.225 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.104 INCHES MINIMUM AND 0.108 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| MATT | MATERIAL | STEEL COMP 1330 OVERALL OR STEEL COMP 3130 OVERALL OR STEEL COMP 4130 OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STYL | STYLE DESIGNATOR | RECESSED |
| AAUB | HOLE DIAMETER | 0.253 INCHES MINIMUM AND 0.259 INCHES MAXIMUM |
| ABMH | RECESS DEPTH | 0.153 INCHES MINIMUM AND 0.162 INCHES MAXIMUM |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD 1ST MATERIAL RESPONSE OVERALL OR AISI ASSN STD 2ND MATERIAL RESPONSE OVERALL OR 66 FED STD 3RD MATERIAL RESPONSE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Relevant Components for NSN - 5310-00-839-2020, 5310008392020 | ||||
| 5315-01-392-6539 (5315013926539) | 5305-00-370-0922 (5305003700922) | 5330-00-108-1053 (5330001081053) | 5305-00-282-3260 (5305002823260) | |
| 5310-00-825-0783 (5310008250783) | 5365-01-200-6930 (5365012006930) | 5340-01-352-9365 (5340013529365) | 5330-01-231-5219 (5330012315219) | |
| 5331-01-452-9668 (5331014529668) | 5305-00-151-8683 (5305001518683) | 5320-00-323-6041 (5320003236041) | 5330-00-516-3829 (5330005163829) | |
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