| Item Name | Screw Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-902-8284 (009028284) |
| NCB Code | USA (00) |
| Manufacturer | National Aerospace Standards Com |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| NAS1247-23 | national aerospace standards com | screw shoulder | 80205 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASK | Head Style | FLAT COUNTERSUNK |
| CQFM | Hardness Rating | 36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| THSD | Thread Series Designator | UNF |
| ABQZ | Internal Drive Style | HIGH-TORQUE |
| CWYB | Shoulder Shape | ROUND FIRST SHOULDER |
| AHYM | Nominal Thread Diameter | 0.438 INCHES |
| AASB | Fastener Length | 1.875 INCHES MINIMUM AND 1.922 INCHES MAXIMUM |
| MRC | Decoded Requirement | Clear Text Reply |
| AASA | Thread Length | 0.327 INCHES MINIMUM AND 0.494 INCHES MAXIMUM |
| AATX | Shoulder Length | 1.218 INCHES MINIMUM FIRST SHOULDER AND 1.241 INCHES MAXIMUM FIRST SHOULDER |
| AASL | Head Diameter | 0.881 INCHES MINIMUM AND 0.888 INCHES MAXIMUM |
| CQBC | Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH |
| CMLP | Thread Quantity Per Inch | 20 |
| AAJD | Thread Class | 3A |
| CRSQ | Countersink Angle | 100.0 DEGREES NOMINAL |
| Relevant Components for NSN - 5305-00-902-8284, 5305009028284 | ||||
| 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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