| Item Name | Screw Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-491-7537 (014917537) |
| NCB Code | USA (01) |
| Manufacturer | Military Standards Corp, National Aerospace Standards Com |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| MS51576-21 | military standards corp | screw shoulder | 96906 | RFQ |
| NASM51576-21 | national aerospace standards com | screw shoulder | 80205 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| STDC | Surface Treatment Document And Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| AASK | Head Style | FLAT CHAMFER |
| AHYM | Nominal Thread Diameter | 0.190 INCHES |
| MATT | Material | STEEL COMP 303 OVERALL |
| ASDB | Width Across Flats | 0.125 INCHES NOMINAL |
| AASA | Thread Length | 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM |
| AAJF | Thread Direction | RIGHT-HAND |
| AASB | Fastener Length | 0.719 INCHES MINIMUM AND 0.784 INCHES MAXIMUM |
| THSD | Thread Series Designator | UNC |
| SFTT | Surface Treatment | PASSIVATE OVERALL |
| AATX | Shoulder Length | 0.622 INCHES MINIMUM FIRST SHOULDER AND 0.628 INCHES MAXIMUM FIRST SHOULDER |
| AASL | Head Diameter | 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM |
| ABQZ | Internal Drive Style | HEXAGON |
| MRC | Decoded Requirement | Clear Text Reply |
| AAJD | Thread Class | 2A |
| MDCL | Material Document And Classification | ASTMA493 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| AATN | Shoulder Diameter | 0.2485 INCHES MINIMUM FIRST SHOULDER AND 0.2495 INCHES MAXIMUM FIRST SHOULDER |
| CWYB | Shoulder Shape | ROUND FIRST SHOULDER |
| AASU | Head Height | 0.156 INCHES MINIMUM AND 0.219 INCHES MAXIMUM |
| CMLP | Thread Quantity Per Inch | 32 |
| Relevant Components for NSN - 5305-01-491-7537, 5305014917537 | ||||
| 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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