The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-653-2574, 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 Ashcroft Inc Dba Heise. Government technical data includes 5 specifications, 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 | 6685-01-653-2574 |
| Primary Part Number | BY13YPF4RB |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Scale Name | POUNDS PRESSURE |
| Overall Diameter | 3.50 INCHES NOMINAL IN |
| Actuation Type | PRESSURE SENSING ELEMENT |
| Dial Size | 3.50 INCHES; IN |
| Graduation Unit | 10.00 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| BY13YPF4RB PRIMARY | Ashcroft Inc Dba Heise (USA) |
NSN 6685-01-653-2574 is a Gage,pressure,dial Indicating, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-653-2574 has 1 manufacturer part number on file: BY13YPF4RB (Ashcroft Inc Dba Heise).
1 possible match (shared part number, not a government interchangeability claim): 6685-01-655-2592. Verify interchangeability with system specifications before substitution.
Key specifications for BY13YPF4RB: Scale Name: POUNDS PRESSURE; Overall Diameter: 3.50 INCHES NOMINAL IN; Actuation Type: PRESSURE SENSING ELEMENT; Dial Size: 3.50 INCHES; IN. 5 specifications are 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.