| Item Name | Screw Assembled Washer |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-042-4209 (000424209) |
| NCB Code | USA (00) |
| Manufacturer | Rumco Inc, General Motors Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.733 INCHES MINIMUM AND 0.844 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.844 INCHES MINIMUM AND 0.875 INCHES MAXIMUM |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| AAVW | WASHER QUANTITY | 1 |
| ABQZ | INTERNAL DRIVE STYLE | SLOT |
| AHYM | NOMINAL THREAD DIAMETER | 0.312 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 18 |
| CQFM | HARDNESS RATING | 30.0 ROCKWELL C MINIMUM FASTENER AND 40.0 ROCKWELL C MAXIMUM FASTENER |
| CQFM | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM PRIMARY WASHER AND 50.0 ROCKWELL C MAXIMUM PRIMARY WASHER |
| CSPG | PRIMARY WASHER OUTSIDE DIAMETER | 0.567 INCHES MINIMUM AND 0.590 INCHES MAXIMUM |
| CTHW | PRIMARY WASHER STYLE | FLAT EXTERNAL TEETH |
| CTJJ | PRIMARY WASHER MATERIAL THICKNESS | 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM |
| FEAT | SPECIAL FEATURES | W/HEADER POINT |
| MATT | MATERIAL | STEEL COMP 1020 OVERALL OR STEEL COMP 1050 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL OR ZINC OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| Relevant Components for NSN - 5305-00-042-4209, 5305000424209 | ||||
| 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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