AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| 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 | ||||
| 5355-00-582-7370 (5355005827370) | 5340-01-492-4288 (5340014924288) | 5340-00-523-3711 (5340005233711) | 5330-01-275-9444 (5330012759444) | |
| 5340-01-238-2053 (5340012382053) | 5365-01-693-2245 (5365016932245) | 5331-01-258-8240 (5331012588240) | 5365-01-672-1629 (5365016721629) | |
| 5365-01-432-4280 (5365014324280) | 5365-01-654-1906 (5365016541906) | 5340-01-451-0804 (5340014510804) | 5340-01-489-6012 (5340014896012) | |
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