| Item Name | Washer Concave |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-881-1706 (008811706) |
| NCB Code | USA (00) |
| Manufacturer | Northrop Grumman Systems Corporation, Klx Inc, Alcoa Global Fasteners Inc, Klx Aerospace Solutions Ii Sas, Satair Usa Inc |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| 90N301-4W | northrop grumman systems corporation | washer concave | 76823 | RFQ |
| K19301-4 | klx inc | washer concave | fb009 | RFQ |
| K19301-4 | alcoa global fasteners inc | washer concave | 15653 | RFQ |
| K19301-4 | klx aerospace solutions ii sas | washer concave | f7652 | RFQ |
| K19301-4 | satair usa inc | washer concave | r1120 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.317 INCHES MINIMUM AND 0.347 INCHES MAXIMUM |
| ABGG | RADIUS | 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| ABKV | OUTSIDE DIAMETER | 0.475 INCHES MINIMUM AND 0.505 INCHES MAXIMUM |
| ABMD | RECESS DIAMETER | 0.411 INCHES NOMINAL |
| ABMH | RECESS DEPTH | 0.025 INCHES MINIMUM AND 0.055 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.080 INCHES MINIMUM AND 0.110 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | CONCAVE |
| Components Related to NSN - 5310-00-881-1706, 5310008811706 | ||||
| 5325-01-017-8809 (5325010178809) | 5330-01-278-3019 (5330012783019) | 5365-01-304-3832 (5365013043832) | 5305-15-060-1487 (5305150601487) | |
| 5305-01-361-3193 (5305013613193) | 5330-01-259-4088 (5330012594088) | 5340-01-672-8342 (5340016728342) | 5342-00-452-9798 (5342004529798) | |
| 5310-01-175-0629 (5310011750629) | 5330-01-120-4149 (5330011204149) | 5331-01-441-4577 (5331014414577) | 5330-01-425-8795 (5330014258795) | |
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