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| 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 | ||||
| 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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