The Detector,leak,gas, cataloged under National Stock Number 6635-01-191-4927, is classified within Federal Supply Class 6635 (Physical Properties Testing and Inspection) of the Instruments and Laboratory Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6635-01-191-4927 |
| Item Name | Detector,leak,gas |
| FSC / FSG | 6635 / 66 — Physical Properties Testing and Inspection |
| Status | ACTIVE |
| General Characteristics Item Description | ORIFICE ELEMENT SEALED INTO 300 CC CYLINDRICAL METAL GAS RESERVOIR OF STAINLESS STEEL; O RING COMPRESSION FITTING CONNECTION; 1/2 IN. DIA,3 IN. LG TUBING FOR DOWNSTREAM CONNECTION; 14-3/8 IN. PORM 1/2 IN. O/A LG,9 IN. MIN AND 9-1/2 IN. MAX CYLINDER LG,2 IN. OD OF CYLINDER; 0.00001 ML PER SEC LEAK RATE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 0M-5SF6 | 5/9 Secondary reference Teledyne Instruments, Inc. Dba Teledyne Hastings Instruments Div Teledyne Hastings Instruments |
| 922-518 | 5/9 Secondary reference Vacuum Instrument Corporation Dba Vic Leak Detection |
| 922-518 | 3/9 Design control — primary reference Teledyne Instruments, Inc. Dba Teledyne Hastings Instruments Div Teledyne Hastings Instruments |
NSN 6635-01-191-4927 is a Detector,leak,gas, classified under FSC 6635, Physical Properties Testing and Inspection. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 2510-01-633-8046, 6150-01-645-8981. Verify interchangeability with system specifications before substitution.
Key specifications for 6635-01-191-4927: General Characteristics Item Description: ORIFICE ELEMENT SEALED INTO 300 CC CYLINDRICAL METAL GAS RESERVOIR OF STAINLESS STEEL; O RING COMPRESSION FITTING CONNECTION; 1/2 IN. DIA,3 IN. LG TUBING FOR DOWNSTREAM CONNECTION; 14-3/8 IN. PORM 1/2 IN. O/A LG,9 IN. MIN AND 9-1/2 IN. MAX CYLINDER LG,2 IN. OD OF CYLINDER; 0.00001 ML PER SEC LEAK RATE IN. 1 specification is documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.