The Indicator,oxygen Flow, cataloged under National Stock Number 1660-01-048-9852, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Pti Technologies Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 1660-01-048-9852 |
| Primary Part Number | 31-10161-2 |
| Item Name | Indicator,oxygen Flow |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Pti Technologies Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 31-10161-2 | Pti Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 31-10161-2 | 5/9 Secondary reference A F B Systems, Inc. Dba Sierra Tech |
| 31-10161-2 | 3/2 Design control — primary reference U.S. Government activity |
| 31-10161-1 | 5/1 Secondary reference U.S. Government activity |
NSN 1660-01-048-9852 is a Indicator,oxygen Flow, manufactured by Pti Technologies Inc., classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-048-9852 has 1 manufacturer part number on file: 31-10161-2 (Pti Technologies Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5961-01-326-2357. Verify interchangeability with system specifications before substitution.
Key specifications for 31-10161-2: Special Features: ASSY CONSIST OF: COVER 53-10533-1; HOUSING 53-10512; SWITCH ASSY 63-10149-1; TUBE 53-10626-1; PLATE 53-10534-1; MAGNET ASSY 63-10148; End Item Identification: 1660010183728. 0 specifications are 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.
NSN 1660-01-048-9852 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.