AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Screw Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-550-1577 (005501577) |
| NCB Code | USA (00) |
| Manufacturer | Boeing Company The, Satair Usa Inc, Sps Technologies Inc, Lisi Aerospace Canada Corp, Alcoa Global Fasteners Inc, Alcoa Fastening Systems Ltd, Reid Products Inc, Huck International Inc, Hi Shear Corporation |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| ST3M454-4DL25 | boeing company the | screw close tolerance | RFQ |
| HT4025L4D25 | satair usa inc | screw close tolerance | RFQ |
| HT4025L4D25 | sps technologies inc | screw close tolerance | RFQ |
| HT4025L4D25 | lisi aerospace canada corp | screw close tolerance | RFQ |
| HT4025L4D25 | alcoa global fasteners inc | screw close tolerance | RFQ |
| HT4025L4D25 | alcoa fastening systems ltd | screw close tolerance | RFQ |
| 11905-4DL25 | reid products inc | screw close tolerance | RFQ |
| HT4025L4D25 | huck international inc | screw close tolerance | RFQ |
| HT4025L4D25 | hi shear corporation | screw close tolerance | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.469 INCHES NOMINAL |
| AASB | FASTENER LENGTH | 2.031 INCHES NOMINAL |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| AASL | HEAD DIAMETER | 0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM |
| AAUR | GRIP DIAMETER | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM FIRST HOLE AND 0.081 INCHES MAXIMUM FIRST HOLE |
| ABQZ | INTERNAL DRIVE STYLE | HIGH-TORQUE |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| ANEE | GRIP LENGTH | 1.562 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CRSQ | COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.895 INCHES MINIMUM FIRST HOLE AND 1.935 INCHES MAXIMUM FIRST HOLE |
| MATT | MATERIAL | STEEL CORROSION RESISTING OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| Relevant Components for NSN - 5305-00-550-1577, 5305005501577 | ||||
| 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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