| Item Name | Screw Machine |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-386-5249 (013865249) |
| NCB Code | USA (01) |
| Manufacturer | Defense Logistics Agency |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASA | THREAD LENGTH | 0.500 INCHES MAXIMUM |
| AASL | HEAD DIAMETER | 0.218 INCHES MINIMUM AND 0.226 INCHES MAXIMUM |
| CYAW | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE |
| THSD | THREAD SERIES DESIGNATOR | UNRF |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASB | FASTENER LENGTH | 0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| AAJD | THREAD CLASS | 3A |
| AATB | WIDTH BETWEEN FLATS | 0.1094 INCHES MINIMUM AND 0.1111 INCHES MAXIMUM |
| CYBE | SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 2 FED SPEC ALL TREATMENT RESPONSES |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AASU | HEAD HEIGHT | 0.134 INCHES MINIMUM AND 0.138 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.138 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 40 |
| CRTL | CRITICALITY CODE JUSTIFICATION | FEAT |
| CYAU | SCREW MATERIAL | STEEL UNS K03104 |
| CYBA | SCREW SURFACE TREATMENT | CADMIUM AND CHROMATE |
| FEAT | SPECIAL FEATURES | THIS ITEM IS FLIGHT SAFETY CRITICAL. THREAD IS SAFETY CRITICAL,UNIFIED FORM SPECIAL PER FED-STD-H28/2,DIMENSIONS PER DRAWING 02269. APPLY ONE COAT OF MIL-P-23377,TY 1,CL 1 OR 3 AND TWO TOP COATS OF MIL-C-46168,COLOR CODE 33538 PER FED |
| Relevant Components for NSN - 5305-01-386-5249, 5305013865249 | ||||
| 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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