| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-638-6005 (006386005) |
| NCB Code | USA (00) |
| Manufacturer | Safran Power Usa Llc, Lucas Aerospace Ltd |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.500 INCHES NOMINAL |
| ABKX | EXTERNAL STRAIGHT KEY LENGTH | 0.172 INCHES NOMINAL |
| ABLC | EXTERNAL STRAIGHT KEY WIDTH | 0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 0.8437 INCHES NOMINAL |
| ABPX | MATERIAL THICKNESS | 0.0279 INCHES MINIMUM AND 0.0379 INCHES MAXIMUM |
| CSFW | ANGLE BETWEEN EXTERNAL KEYS | 150.0 DEGREES NOMINAL |
| FEAT | SPECIAL FEATURES | OUTSIDE DIA HAS FLAT SIDE OPPISITE ANGLE |
| MATT | MATERIAL | STEEL COMP 1010 OR STEEL COMP 1020 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD ALL MATERIAL RESPONSES OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OR ZINC OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 1,CLASS 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TYPE 1,CLASS 1 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | KEY |
| Relevant Components for NSN - 5310-00-638-6005, 5310006386005 | ||||
| 5320-01-318-6843 (5320013186843) | 5340-01-557-4760 (5340015574760) | 5340-00-336-3776 (5340003363776) | 5340-01-560-8528 (5340015608528) | |
| 5330-01-684-2979 (5330016842979) | 5310-01-185-8686 (5310011858686) | 5360-00-394-4491 (5360003944491) | 5320-01-267-6376 (5320012676376) | |
| 5315-00-432-8021 (5315004328021) | 5315-01-271-9296 (5315012719296) | 5340-01-353-1927 (5340013531927) | 5320-01-413-1816 (5320014131816) | |
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