| Item Name | Arm Microphone |
| Federal Supply Group (FSG) | Electrical and Electronic Equipment Components |
| Federal Supply Class (FSC) | 5965 Headsets Handsets Microphones and Speakers |
| National Item Identification Number (NIIN) | 00-256-8407 (002568407) |
| NCB Code | USA (00) |
| Manufacturer | Audio Sears Corp, Department Of The Air Force, Roanwell Corporation, Mason Electric Company, Military Specifications, Military Standards Corp, Joint Electronics Type Designation System |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| 1147 | audio sears corp | arm microphone | 97101 | RFQ |
| 46D40393 | department of the air force | arm microphone | 80049 | RFQ |
| 9951A | roanwell corporation | arm microphone | 82872 | RFQ |
| CE266C | mason electric company | arm microphone | 81579 | RFQ |
| MIL-M-5793 | military specifications | arm microphone | 81349 | RFQ |
| MS25070 | military standards corp | arm microphone | 96906 | RFQ |
| MT-521A U | joint electronics type designation system | arm microphone | 80058 | RFQ |
| MT521AU | mason electric company | arm microphone | 81579 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABHP | OVERALL LENGTH | 9.000 INCHES NOMINAL |
| ABMK | OVERALL WIDTH | 1.250 INCHES NOMINAL |
| ADUM | OVERALL THICKNESS | 2.000 INCHES NOMINAL |
| AXGY | MOUNTING METHOD | W/SWIVEL SLIDE AND DETENT ACTION |
| BKSB | MICROPHONE ATTACHMENT METHOD | CLIP |
| FEAT | SPECIAL FEATURES | SHOCK RESISTANT |
| MATT | MATERIAL | STEEL |
| TEST | TEST DATA DOCUMENT | 81349-MIL-M-5793 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS,BROCHURES,ETC.,THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS,INDUSTRY DIRECTORIES,AND SIMILAR TRADE PUBLICATIONS,REFLECTIN |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | MT-521A/U TYPE |
| Components Related to NSN - 5965-00-256-8407, 5965002568407 | ||||
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| 5910-01-473-2951 (5910014732951) | 5910-01-337-0976 (5910013370976) | 5945-01-701-5176 (5945017015176) | 5962-01-293-2081 (5962012932081) | |
| 5995-01-500-4596 (5995015004596) | 5998-01-339-9359 (5998013399359) | 5935-00-005-2930 (5935000052930) | 5995-01-354-7490 (5995013547490) | |
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