| Item Name | Screw Cap Socket Head |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-542-8981 (015428981) |
| NCB Code | USA (01) |
| Manufacturer | National Aerospace Standards Com |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| NAS1351N5H28 | national aerospace standards com | screw cap socket head | 80205 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASK | Head Style | FLAT CHAMFER |
| ASXK | Hole Quantity | 6 |
| SFTT | Surface Treatment | PASSIVATE OVERALL |
| BQDM | Hole Type | DRILLED |
| CQBC | Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH |
| AASL | Head Diameter | 0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM |
| ABQZ | Internal Drive Style | HEXAGON |
| AASB | Fastener Length | 1.750 INCHES NOMINAL |
| THSD | Thread Series Designator | UNRF |
| AHYM | Nominal Thread Diameter | 0.312 INCHES |
| AAJF | Thread Direction | RIGHT-HAND |
| MATT | Material | IRON ALLOY 660 OVERALL |
| CMLP | Thread Quantity Per Inch | 24 |
| AAUB | Hole Diameter | 0.044 INCHES MINIMUM AND 0.050 INCHES MAXIMUM |
| AASA | Thread Length | 1.125 INCHES NOMINAL |
| ASDB | Width Across Flats | 0.250 INCHES MINIMUM AND 0.253 INCHES MAXIMUM |
| MRC | Decoded Requirement | Clear Text Reply |
| AASU | Head Height | 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
| AAJD | Thread Class | 3A |
| Relevant Components for NSN - 5305-01-542-8981, 5305015428981 | ||||
| 5320-01-093-5687 (5320010935687) | 5340-00-286-8500 (5340002868500) | 5310-00-797-4430 (5310007974430) | 5331-01-548-6940 (5331015486940) | |
| 5340-01-389-2408 (5340013892408) | 5340-01-499-3481 (5340014993481) | 5310-01-418-9739 (5310014189739) | 5320-01-419-8697 (5320014198697) | |
| 5340-01-681-6722 (5340016816722) | 5340-01-620-4639 (5340016204639) | 5340-01-481-2087 (5340014812087) | 5331-01-097-0869 (5331010970869) | |
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