The Indicator,humidity,tube, cataloged under National Stock Number 6685-01-082-1705, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Hydraulics International, Inc. Dba Hydraulics International 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-082-1705 |
| Primary Part Number | 20018-1 |
| Item Name | Indicator,humidity,tube |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Hydraulics International, Inc. Dba Hydraulics International Inc |
| Status | ACTIVE |
| General Characteristics Item Description | 0.50 IN.DIA,1.75 IN.DEPTH; CONSISTS OF TUBE 1,WIRE CLOTH 2,STOPPER 2,DESICCANT FOR MOISTURE AS REQD IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 20018-1 PRIMARY | Hydraulics International, Inc. Dba Hydraulics International Inc (USA) |
| Reference | Meaning |
|---|---|
| 20018-200 | 5/9 Secondary reference Hydraulics International, Inc. Dba Hydraulics International Inc |
| 77004-135 | 5/9 Secondary reference Hydraulics International, Inc. Dba Hydraulics International Inc |
NSN 6685-01-082-1705 is a Indicator,humidity,tube, manufactured by Hydraulics International, Inc. Dba Hydraulics International Inc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-082-1705 has 1 manufacturer part number on file: 20018-1 (Hydraulics International, Inc. Dba Hydraulics International Inc).
3 possible matches (shared part number, not a government interchangeability claim): 6645-01-149-4231, 5355-01-195-1489, 6530-01-536-3431. Verify interchangeability with system specifications before substitution.
Key specifications for 20018-1: General Characteristics Item Description: 0.50 IN.DIA,1.75 IN.DEPTH; CONSISTS OF TUBE 1,WIRE CLOTH 2,STOPPER 2,DESICCANT FOR MOISTURE AS REQD IN; End Item Identification: AIRCRAFT PNEUMATIC TEST STAND. 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.
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.