The Sensor Assembly,sniffer, cataloged under National Stock Number 6665-01-181-9837, is classified within Federal Supply Class 6665 (Hazard-detecting Instruments and Apparatus) of the Instruments and Laboratory Equipment group. The manufacturer of record is Bacharach, Inc.. 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 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 | 6665-01-181-9837 |
| Primary Part Number | 51-1057 |
| Item Name | Sensor Assembly,sniffer |
| FSC / FSG | 6665 / 66 — Hazard-detecting Instruments and Apparatus |
| Manufacturer | Bacharach, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF FLAME ARRESTOR 1; 5-PIN HEADER 1; QUARTZ SEPARATOR 1; ELEMENT ASSEMBLY 2; SENSOR SLEEVE 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 51-1057 PRIMARY | Bacharach, Inc. (USA) |
NSN 6665-01-181-9837 is a Sensor Assembly,sniffer, manufactured by Bacharach, Inc., classified under FSC 6665, Hazard-detecting Instruments and Apparatus. Status: active.
NSN 6665-01-181-9837 has 1 manufacturer part number on file: 51-1057 (Bacharach, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-260-8709. Verify interchangeability with system specifications before substitution.
Key specifications for 51-1057: General Characteristics Item Description: CONSISTS OF FLAME ARRESTOR 1; 5-PIN HEADER 1; QUARTZ SEPARATOR 1; ELEMENT ASSEMBLY 2; SENSOR SLEEVE 1. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 6665-01-181-9837 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.