The Humidistat,pneumatic, cataloged under National Stock Number 6685-00-375-8689, 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 Honeywell Inc Commercial Div. 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-375-8689 |
| Primary Part Number | HP900AX15 |
| Item Name | Humidistat,pneumatic |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Honeywell Inc Commercial Div |
| Status | ACTIVE |
| General Characteristics Item Description | TEMPERATURE LIMITS 45 TO 125 DEG F; SUPPLY AIR PRESSURE 18 PSI; 3 IN. HEIGHT,1-3/4 IN. W; 1-1/2 IN. DEPTH 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 |
|---|---|
| HP900AX15 | Honeywell Inc Commercial Div (USA) |
| Reference | Meaning |
|---|---|
| 49MC1133N2 | 5/9 Secondary reference Carrier Corp |
| NA607REV1PCH0900A15 | 5/9 Secondary reference Honeywell Inc Process Controls Div |
| 5901-3100563REV1 | 7/2 Vendor item drawing reference U.S. Government activity |
| 563-5901-982852 | 7/2 Vendor item drawing reference U.S. Government activity |
| H0900AX15 | 5/9 Secondary reference Honeywell Inc Process Controls Div |
| HP900A1079 | 5/9 Secondary reference Honeywell Inc Process Controls Div |
| HP972B1013 | 3/9 Design control — primary reference United Toolcraft |
NSN 6685-00-375-8689 is a Humidistat,pneumatic, manufactured by Honeywell Inc Commercial Div, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-375-8689 has 1 manufacturer part number on file: HP900AX15 (Honeywell Inc Commercial Div).
Key specifications for HP900AX15: General Characteristics Item Description: TEMPERATURE LIMITS 45 TO 125 DEG F; SUPPLY AIR PRESSURE 18 PSI; 3 IN. HEIGHT,1-3/4 IN. W; 1-1/2 IN. DEPTH IN; End Item Identification: CHILLED WATER A/C SYSTEMS POSEIDON MATERIAL. 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.