The Indicator,combustible Gas,portab, cataloged under National Stock Number 6665-01-174-4358, is classified within Federal Supply Class 6665 (Hazard-detecting Instruments and Apparatus) of the Instruments and Laboratory Equipment group. The manufacturer of record is Mine Safety Appliances Company. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Indicator,combustible Gas,portab |
| FSC / FSG | 6665 — Hazard-detecting Instruments and Apparatus (FSG 66) |
| Manufacturers | Mine Safety Appliances Company (CAGE 55799) |
| Parameter | Value |
|---|---|
| NSN | 6665-01-174-4358 |
| Primary Part Number | 77550 |
| Item Name | Indicator,combustible Gas,portab |
| FSC / FSG | 6665 / 66 — Hazard-detecting Instruments and Apparatus |
| Manufacturer | Mine Safety Appliances Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| 77550 PRIMARY | Mine Safety Appliances Company (USA) |
NSN 6665-01-174-4358 is a Indicator,combustible Gas,portab, manufactured by Mine Safety Appliances Company, classified under FSC 6665, Hazard-detecting Instruments and Apparatus. Status: active.
NSN 6665-01-174-4358 has 1 manufacturer part number on file: 77550 (Mine Safety Appliances Company).
2 possible matches (shared part number, not a government interchangeability claim): 1730-01-484-0128, 4440-01-663-4312. 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.