| Item Name | Screw Drive |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-850-5841 (008505841) |
| NCB Code | USA (00) |
| Manufacturer | Military Standards Corp, National Aerospace Standards Com |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| MS21318-37 | military standards corp | screw drive | 96906 | RFQ |
| MS21318-37 | national aerospace standards com | screw drive | 80205 | RFQ |
| NASM21318 | national aerospace standards com | screw drive | 80205 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASL | HEAD DIAMETER | 0.264 INCHES MINIMUM AND 0.285 INCHES MAXIMUM |
| AAVL | PILOT DIAMETER | 0.122 INCHES MINIMUM AND 0.126 INCHES MAXIMUM |
| AAVM | PILOT LENGTH | 0.062 INCHES NOMINAL |
| CBBL | FEATURES PROVIDED | CASEHARDENED |
| CRGF | NONMACHINE THREAD STYLE | DRIVE SCREW (TYPE U) |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,DRIVE,ROUND HEAD,TYPE U,STEEL,CARBON,CADMIUM PLATED |
| MATT | MATERIAL | STEEL OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| ZZZK | SPECIFICATION/STANDARD DATA | 80205-NAS-21318,25 NOV 1998 WHICH REPLACED MS21318,REV A0./13/65 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION |
| AASB | FASTENER LENGTH | 0.500 INCHES NOMINAL |
| AASK | HEAD STYLE | ROUND |
| AASU | HEAD HEIGHT | 0.099 INCHES MINIMUM AND 0.111 INCHES MAXIMUM |
| AGAV | END ITEM IDENTIFICATION | 5895-01-514-7015,COMMUNICATIONS INTERFACE SYSTEM (CIS) (V) 2 |
| CTYF | NONMACHINE NOMINAL THREAD DIAMETER | 0.152 INCHES |
| FEAT | SPECIAL FEATURES | SCREW IS NOT RECOMMENDED FOR USE IN MATERIAL THE THICKNESS OF WHICH IS LESS THAN ONE DIAMETER OF THE SCREW |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| Relevant Components for NSN - 5305-00-850-5841, 5305008505841 | ||||
| 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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