The Detector,leak,ultrasonic, cataloged under National Stock Number 6635-01-294-5040, is classified within Federal Supply Class 6635 (Physical Properties Testing and Inspection) of the Instruments and Laboratory Equipment group. The manufacturer of record is Hartford Steam Boiler Inspection and Insurance Co. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6635-01-294-5040 |
| Primary Part Number | 999-0267 |
| Item Name | Detector,leak,ultrasonic |
| FSC / FSG | 6635 / 66 — Physical Properties Testing and Inspection |
| Manufacturer | Hartford Steam Boiler Inspection and Insurance Co |
| Status | ACTIVE |
| General Characteristics Item Description | SOLID STATE; BATTERY OPERATED; OUTPUT METER W/ZERO ADJUSTMENT AND GLASSCOVER; TWO PROBES C/O MICROPHONE & A PREAMPLIFIER AND SHIELDED AGAINST RF INTERFERENCE,ONE PROBE CONTAINS A STAINLESS STEEL STYLUS 5.000 IN. L; POWER SWITCH; HEADPHONE W/IMPEDANCE OF 600 PORM 50 OHMS; CONTROL KNOB; SIGNAL-TO-NOISE RATIO 45.0 DB IN |
| 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 |
|---|---|
| 999-0267 PRIMARY | Hartford Steam Boiler Inspection and Insurance Co (USA) |
| Reference | Meaning |
|---|---|
| 999-0267 | 5/9 Secondary reference Hartford Steam Boiler Inspection Technologies |
NSN 6635-01-294-5040 is a Detector,leak,ultrasonic, manufactured by Hartford Steam Boiler Inspection and Insurance Co, classified under FSC 6635, Physical Properties Testing and Inspection. Status: active.
NSN 6635-01-294-5040 has 1 manufacturer part number on file: 999-0267 (Hartford Steam Boiler Inspection and Insurance Co).
Key specifications for 999-0267: General Characteristics Item Description: SOLID STATE; BATTERY OPERATED; OUTPUT METER W/ZERO ADJUSTMENT AND GLASSCOVER; TWO PROBES C/O MICROPHONE & A PREAMPLIFIER AND SHIELDED AGAINST RF INTERFERENCE,ONE PROBE CONTAINS A STAINLESS STEEL STYLUS 5.000 IN. L; POWER SWITCH; HEADPHONE W/IMPEDANCE OF 600 PORM 50 OHMS; CONTROL KNOB; SIGNAL-TO-NOISE RATIO 45.0 DB IN. 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.