The Indicator,oxygen, cataloged under National Stock Number 6665-01-138-4136, is classified within Federal Supply Class 6665 (Hazard-detecting Instruments and Apparatus) of the Instruments and Laboratory Equipment group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Indicator,oxygen |
| FSC / FSG | 6665 — Hazard-detecting Instruments and Apparatus (FSG 66) |
| Parameter | Value |
|---|---|
| NSN | 6665-01-138-4136 |
| Item Name | Indicator,oxygen |
| FSC / FSG | 6665 / 66 — Hazard-detecting Instruments and Apparatus |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 5140-0100 | 3/9 Design control — primary reference Wesco Distribution Inc 5105 |
| 5140-0100 | 5/9 Secondary reference Bacharach, Inc. |
| 514-001 | 5/9 Secondary reference Bacharach, Inc. |
NSN 6665-01-138-4136 is a Indicator,oxygen, classified under FSC 6665, Hazard-detecting Instruments and Apparatus. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5315-01-648-1240. Verify interchangeability with system specifications before substitution.
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.