| Item Name | Washer Flat |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-421-9920 (014219920) |
| NCB Code | USA (01) |
| Manufacturer | Syn Tech Systems Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABMW | Peripheral Shape Style | ROUND |
| MATT | Material | STEEL COMP E4340 OVERALL |
| ABMX | Center Hole Shape Style | ROUND |
| ABNM | Thickness | 0.125 INCHES NOMINAL |
| AAUB | Hole Diameter | 0.328 INCHES NOMINAL |
| ADAV | Overall Diameter | 1.000 INCHES NOMINAL |
| CQFM | Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| SFTT | Surface Treatment | ZINC OVERALL AND CHROMATE OVERALL |
| MDCL | Material Document And Classification | QQ-S-624 4340 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| STDC | Surface Treatment Document And Classification | ASTM B633 TYPE 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| AAGR | Cross-Sectional Shape Style | RECTANGULAR |
| MRC | Decoded Requirement | Clear Text Reply |
| Relevant Components for NSN - 5310-01-421-9920, 5310014219920 | ||||
| 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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