The Tester,microphone, cataloged under National Stock Number 6665-01-302-8347, is classified within Federal Supply Class 6665 (Hazard-detecting Instruments and Apparatus) of the Instruments and Laboratory Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6665-01-302-8347 |
| Item Name | Tester,microphone |
| FSC / FSG | 6665 / 66 — Hazard-detecting Instruments and Apparatus |
| Status | ACTIVE |
| General Characteristics Item Description | C/O ADAPTER,M642/7-1;JACK TELEPHONE,M641/8-1;PLUG TELEPHONE,M642/7-1;JACK TYPE U-179,MJ-103;1.000 FT O/A LG; 1.000 FT O/A WD;THE TESTER SHALL BE CAPABLE OF TESTING FUNCTIONABILITY OF MICROPHONES ASSEMBLED IN M24,M25,M41,M42,AND M43 GAS MASKS BY ACTIVATION WITHAN INTERGAL SOUND SOURCE AND DETECTINGAND DISPLAYING A MICROPHONE FT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| 136-30-180 | 7/2 Vendor item drawing reference U.S. Government activity |
| TDA-12 | 3/9 Design control — primary reference Air Techniques Intl |
NSN 6665-01-302-8347 is a Tester,microphone, classified under FSC 6665, Hazard-detecting Instruments and Apparatus. Status: active.
Key specifications for 6665-01-302-8347: General Characteristics Item Description: C/O ADAPTER,M642/7-1;JACK TELEPHONE,M641/8-1;PLUG TELEPHONE,M642/7-1;JACK TYPE U-179,MJ-103;1.000 FT O/A LG; 1.000 FT O/A WD;THE TESTER SHALL BE CAPABLE OF TESTING FUNCTIONABILITY OF MICROPHONES ASSEMBLED IN M24,M25,M41,M42,AND M43 GAS MASKS BY ACTIVATION WITHAN INTERGAL SOUND SOURCE AND DETECTINGAND DISPLAYING A MICROPHONE FT; End Item Identification: TESTER MICROPHONE. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.