The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-357-3725, 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 Bristol Babcock Inc Helicoid Instruments Div. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-357-3725 |
| Primary Part Number | F1H6D7A0FW000 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Bristol Babcock Inc Helicoid Instruments Div |
| Status | ACTIVE |
| Scale Accuracy | PORM .50 OF 1 PCT FULL SCALE |
| Scale Name | PRESSURE |
| Overall Diameter | 5.880 INCHES NOMINAL IN |
| Actuation Type | BOURDON TUBE |
| Mounting Method | FLUSH |
| Scale Inscription/background Color | BLACK MARKINGS ON WHITE BACKGROUND |
| Scale Smallest Increment | 0.2 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 45.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Material Document and Classification | AISI 316 ASSN STD SINGLE MATERIAL RESPONSE ACTUATING ELEMENT |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 4-1/2 IN. DIA IN |
| Graduation Unit | 2.0 POUNDS PER SQUARE INCH LBS |
| Connection Location | BACK |
| Pointer Color | BLACK |
| Material | PLASTIC PROTECTIVE CRYSTAL |
| Material | PLASTIC PHENOLIC CASE |
| Material | STEEL COMP 316 ACTUATING ELEMENT |
| Connection Quantity | 1 |
| Connection Size | 0.438 IN. NPT DIA 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 |
|---|---|
| GG512U45 | Northrop Grumman Systems Corporation (USA) |
| F1H6D7A0FW000 PRIMARY | Bristol Babcock Inc Helicoid Instruments Div (USA) |
| Reference | Meaning |
|---|---|
| GG512U | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| 308014102 | 5/9 Secondary reference Bristol Babcock Inc Helicoid Instruments Div |
NSN 6685-01-357-3725 is a Gage,pressure,dial Indicating, manufactured by Bristol Babcock Inc Helicoid Instruments Div, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-357-3725 has 2 manufacturer part numbers on file: GG512U45 (Northrop Grumman Systems Corporation), F1H6D7A0FW000 (Bristol Babcock Inc Helicoid Instruments Div).
Key specifications for F1H6D7A0FW000: Scale Accuracy: PORM .50 OF 1 PCT FULL SCALE; Scale Name: PRESSURE; Overall Diameter: 5.880 INCHES NOMINAL IN; Actuation Type: BOURDON TUBE. 23 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.