| Item Name | Screw Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-182-9243 (001829243) |
| NCB Code | USA (00) |
| Manufacturer | Army United States Department Of The |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.205 INCHES MINIMUM AND 0.240 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AASL | HEAD DIAMETER | 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.214 INCHES MINIMUM FIRST SHOULDER AND 0.216 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.205 INCHES MINIMUM FIRST SHOULDER AND 0.210 INCHES MAXIMUM FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | SLOT |
| AHYM | NOMINAL THREAD DIAMETER | 0.190 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| CQFM | HARDNESS RATING | 38.0 ROCKWELL C MINIMUM OVERALL AND 42.0 ROCKWELL C MAXIMUM OVERALL |
| CRTL | CRITICALITY CODE JUSTIFICATION | AATN AND AATX |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | UNDERCUT 0.290 IN. MIN,0.305 IN. MAX FROM BEARING SURFACE OF HEAD |
| MATT | MATERIAL | STEEL COMP E4340 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| Relevant Components for NSN - 5305-00-182-9243, 5305001829243 | ||||
| 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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