| Item Name | Screw Cap Hexagon Head |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-331-8037 (003318037) |
| NCB Code | USA (00) |
| Manufacturer | Allis Chalmers Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| CQFM | Hardness Rating | 32.0 ROCKWELL C MINIMUM OVERALL AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| AHYM | Nominal Thread Diameter | 0.438 INCHES |
| MATT | Material | STEEL OVERALL |
| AATB | Width Between Flats | 0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| AASK | Head Style | HEXAGON |
| THSD | Thread Series Designator | UNF |
| AAJF | Thread Direction | RIGHT-HAND |
| CQBC | Minimum Tensile Strength | 150000 POUNDS PER SQUARE INCH |
| SFTT | Surface Treatment | CADMIUM OVERALL OR ZINC OVERALL |
| MRC | Decoded Requirement | Clear Text Reply |
| CMLP | Thread Quantity Per Inch | 20 |
| AAJD | Thread Class | 2A |
| AASB | Fastener Length | 2.500 INCHES NOMINAL |
| AASA | Thread Length | 1.125 INCHES MAXIMUM |
| ZZZT | Nondefinitive Spec/Std Data | 2 TYPE AND 10P STYLE AND 8 GRADE |
| AASU | Head Height | 0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM |
| Relevant Components for NSN - 5305-00-331-8037, 5305003318037 | ||||
| 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) | |
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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