The Leak Detector,refrigerant Gas, cataloged under National Stock Number 4940-00-411-8650, is classified within Federal Supply Class 4940 (Miscellaneous Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Kirby Refrigerationa Div of James N Kirby Pty Ltd. 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4940-00-411-8650 |
| Primary Part Number | L-790A |
| Item Name | Leak Detector,refrigerant Gas |
| FSC / FSG | 4940 / 49 — Miscellaneous Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Kirby Refrigerationa Div of James N Kirby Pty Ltd |
| Status | ACTIVE |
| General Characteristics Item Description | PROBE TYPE,AUDIO INDICATION,9VDC OPERATING POWER,10.380 IN. LGBY 8.620 IN. H BY 3.380 IN. W O/A VDC |
| 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 |
|---|---|
| L-790A | Kirby Refrigerationa Div of James N Kirby Pty Ltd (AUS) |
| Reference | Meaning |
|---|---|
| 916438-1-1 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
| 916438-1-1 | 5/9 Secondary reference Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
| 904568 | 5/9 Secondary reference Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
| L-790A | 3/2 Design control — primary reference U.S. Government activity |
| 904568 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
| DT346U | 3/2 Design control — primary reference U.S. Government activity |
NSN 4940-00-411-8650 is a Leak Detector,refrigerant Gas, manufactured by Kirby Refrigerationa Div of James N Kirby Pty Ltd, classified under FSC 4940, Miscellaneous Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4940-00-411-8650 has 1 manufacturer part number on file: L-790A (Kirby Refrigerationa Div of James N Kirby Pty Ltd).
1 possible match (shared part number, not a government interchangeability claim): 6665-01-458-8947. Verify interchangeability with system specifications before substitution.
Key specifications for L-790A: General Characteristics Item Description: PROBE TYPE,AUDIO INDICATION,9VDC OPERATING POWER,10.380 IN. LGBY 8.620 IN. H BY 3.380 IN. W O/A VDC. 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.