| Item Name | Washer Concave |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-321-8612 (013218612) |
| NCB Code | USA (01) |
| Manufacturer | Alcoa Global Fasteners Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.592 INCHES MINIMUM AND 0.598 INCHES MAXIMUM |
| ABGG | RADIUS | 0.496 INCHES MINIMUM AND 0.501 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.863 INCHES MINIMUM AND 0.873 INCHES MAXIMUM |
| ABMH | RECESS DEPTH | 0.075 INCHES NOMINAL |
| ABPX | MATERIAL THICKNESS | 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM |
| MATT | MATERIAL | STEEL COMP 8740 OVERALL OR STEEL COMP E4340 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | CONCAVE |
| Relevant Components for NSN - 5310-01-321-8612, 5310013218612 | ||||
| 5320-01-093-5687 (5320010935687) | 5340-00-286-8500 (5340002868500) | 5310-00-797-4430 (5310007974430) | 5331-01-548-6940 (5331015486940) | |
| 5340-01-389-2408 (5340013892408) | 5340-01-499-3481 (5340014993481) | 5310-01-418-9739 (5310014189739) | 5320-01-419-8697 (5320014198697) | |
| 5340-01-681-6722 (5340016816722) | 5340-01-620-4639 (5340016204639) | 5340-01-481-2087 (5340014812087) | 5331-01-097-0869 (5331010970869) | |
If You’re Ever Looking for NSN parts Or Have an Aircraft On Ground Situation, Don’t forget That We offer Competitive Pricing and Guaranteed On-Time Delivery.
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