The Detection Kit,leak,microsonic, cataloged under National Stock Number 6635-01-253-4511, is classified within Federal Supply Class 6635 (Physical Properties Testing and Inspection) of the Instruments and Laboratory Equipment group. The manufacturer of record is Electronics for Industry Inc Dba Detection Instruments. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6635-01-253-4511 |
| Primary Part Number | W-7 |
| Item Name | Detection Kit,leak,microsonic |
| FSC / FSG | 6635 / 66 — Physical Properties Testing and Inspection |
| Manufacturer | Electronics for Industry Inc Dba Detection Instruments |
| Status | ACTIVE |
| General Characteristics Item Description | C/O PISTOL-TYPE DETECTOR W/MOTOR,INTERCHANGEABLE PLUG-IN MODULES FOR LEAK USAGE AND STETHOSCOPE USAGE,A TONE GENERATOR,HEADSET,AND A RUBBER FOCUSING EXTENSION; INCLUDES DURABLE CARRYING CASE; 9.0V BATTERY V |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| W-7 PRIMARY | Electronics for Industry Inc Dba Detection Instruments (USA) |
NSN 6635-01-253-4511 is a Detection Kit,leak,microsonic, manufactured by Electronics for Industry Inc Dba Detection Instruments, classified under FSC 6635, Physical Properties Testing and Inspection. Status: active.
NSN 6635-01-253-4511 has 1 manufacturer part number on file: W-7 (Electronics for Industry Inc Dba Detection Instruments).
1 possible match (shared part number, not a government interchangeability claim): 4020-01-500-7243. Verify interchangeability with system specifications before substitution.
Key specifications for W-7: General Characteristics Item Description: C/O PISTOL-TYPE DETECTOR W/MOTOR,INTERCHANGEABLE PLUG-IN MODULES FOR LEAK USAGE AND STETHOSCOPE USAGE,A TONE GENERATOR,HEADSET,AND A RUBBER FOCUSING EXTENSION; INCLUDES DURABLE CARRYING CASE; 9.0V BATTERY V. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.