| Item Name | Screw Cap Socket Head |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-491-1379 (004911379) |
| NCB Code | USA (00) |
| Manufacturer | Boeing Company The |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.311 INCHES MINIMUM AND 0.437 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.578 INCHES MINIMUM AND 0.608 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| AASL | HEAD DIAMETER | 0.538 INCHES MINIMUM AND 0.548 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AHYM | NOMINAL THREAD DIAMETER | 0.312 INCHES |
| ASDB | WIDTH ACROSS FLATS | 0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| CQBC | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH |
| CRSQ | COUNTERSINK ANGLE | 99.5 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES GRIP |
| MATT | MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 1893 FSCM 88277 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 251 FSCM 88277 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5305-00-491-1379, 5305004911379 | ||||
| 5305-01-339-0166 (5305013390166) | 5365-01-662-5153 (5365016625153) | 5360-01-351-8647 (5360013518647) | 5305-00-452-2092 (5305004522092) | |
| 5320-01-350-0370 (5320013500370) | 5365-01-048-9619 (5365010489619) | 5330-01-329-6615 (5330013296615) | 5331-00-493-8173 (5331004938173) | |
| 5330-00-146-3153 (5330001463153) | 5305-00-052-8884 (5305000528884) | 5330-01-651-5544 (5330016515544) | 5310-00-444-5136 (5310004445136) | |
If You’re Ever Looking for NSN parts Or Have an Aircraft On Ground Situation, Don’t forget That We offer Competitive Pricing and Guaranteed On-Time Delivery.
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