AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Screw Cap Hexagon Head |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-018-1639 (000181639) |
| NCB Code | USA (00) |
| Manufacturer | Navistar Intl Corp, Diamond Reo Trucks Inc, Mack Trucks Inc, Federal Specifications, General Motors Corp, Sasco Inc |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| 181639 | navistar intl corp | screw cap hexagon head | RFQ |
| 181639 | diamond reo trucks inc | screw cap hexagon head | RFQ |
| 1AX24 | mack trucks inc | screw cap hexagon head | RFQ |
| FFS85TYPE2STYLE10P | federal specifications | screw cap hexagon head | RFQ |
| 181369 | general motors corp | screw cap hexagon head | RFQ |
| 181639 | general motors corp | screw cap hexagon head | RFQ |
| 20620U | sasco inc | screw cap hexagon head | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 1.000 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 1.250 INCHES NOMINAL |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.234 INCHES NOMINAL |
| AATB | WIDTH BETWEEN FLATS | 0.562 INCHES NOMINAL |
| AHYM | NOMINAL THREAD DIAMETER | 0.375 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| CQBC | MINIMUM TENSILE STRENGTH | 120000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 23.0 ROCKWELL C MINIMUM OVERALL AND 30.0 ROCKWELL C MAXIMUM OVERALL |
| MATT | MATERIAL | STEEL OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND 10P STYLE AND 5 GRADE |
| Relevant Components for NSN - 5305-00-018-1639, 5305000181639 | ||||
| 5305-00-151-0390 (5305001510390) | 5305-00-162-0212 (5305001620212) | 5330-01-021-6193 (5330010216193) | 5306-01-667-2305 (5306016672305) | |
| 5305-00-702-7578 (5305007027578) | 5306-01-467-0619 (5306014670619) | 5340-14-507-0973 (5340145070973) | 5330-01-545-5049 (5330015455049) | |
| 5331-01-433-9967 (5331014339967) | 5330-01-176-0563 (5330011760563) | 5330-20-001-0516 (5330200010516) | 5305-00-550-9932 (5305005509932) | |
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