| Item Name | Washer Flat |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-031-8370 (010318370) |
| NCB Code | USA (01) |
| Manufacturer | Navair And Navsea Managed |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAGR | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| AAUB | HOLE DIAMETER | 0.564 INCHES MINIMUM AND 0.568 INCHES MAXIMUM |
| ABMW | PERIPHERAL SHAPE STYLE | ROUND |
| ABMX | CENTER HOLE SHAPE STYLE | ROUND |
| ABNM | THICKNESS | 0.187 INCHES NOMINAL |
| ADAV | OVERALL DIAMETER | 1.375 INCHES NOMINAL |
| CQFM | HARDNESS RATING | 27.0 ROCKWELL C MINIMUM OR 35.0 ROCKWELL C MAXIMUM |
| CQZT | OUTSIDE LEFT CORNER CHAMFER ANGLE | 45.0 DEGREES NOMINAL |
| CRFT | OUTSIDE RIGHT CORNER CHAMFER ANGLE | 45.0 DEGREES NOMINAL |
| CRJY | INSIDE LEFT CORNER CHAMFER ANGLE | 45.0 DEGREES NOMINAL |
| CRTL | CRITICALITY CODE JUSTIFICATION | ZZZW |
| CSZZ | INSIDE RIGHT CORNER CHAMFER ANGLE | 45.0 DEGREES NOMINAL |
| HUES | COLOR | BLACK OVERALL |
| MATT | MATERIAL | STEEL COMP 4140 OVERALL |
| SFTT | SURFACE TREATMENT | OXIDE FILM OVERALL |
| ZZZW | DEPARTURE FROM CITED DOCUMENT | AS DIFFERENTIATED BY SPECIAL QUALITY CONTROL TESTING FOR MK 48 TORPEDO |
| Relevant Components for NSN - 5310-01-031-8370, 5310010318370 | ||||
| 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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