| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-442-0811 (004420811) |
| NCB Code | USA (00) |
| Manufacturer | Amphenol Corporation, Teledyne Industries Inc, Unison Industries Llc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.265 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM |
| ABKX | EXTERNAL STRAIGHT KEY LENGTH | 0.218 INCHES NOMINAL |
| ABLA | PEENING KEY LENGTH | 0.296 INCHES NOMINAL |
| ABLC | EXTERNAL STRAIGHT KEY WIDTH | 0.188 INCHES NOMINAL |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 0.828 INCHES NOMINAL |
| ABPX | MATERIAL THICKNESS | 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM |
| CSKN | EXTERNAL PREBENT KEY ANGLE | 30.0 DEGREES NOMINAL |
| MATT | MATERIAL | STEEL COMP 1010 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | KEY |
| Relevant Components for NSN - 5310-00-442-0811, 5310004420811 | ||||
| 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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