The Gage,absolute Pressure,dial Indi, cataloged under National Stock Number 6685-00-417-3358, 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 Siemens Water Technologies Corp. Div Wallace & Tiernan Products. Government technical data includes 27 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6685-00-417-3358 |
| Primary Part Number | 61D-1A-0030B |
| Item Name | Gage,absolute Pressure,dial Indi |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Siemens Water Technologies Corp. Div Wallace & Tiernan Products |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Scale Accuracy | 0.33 PCT ENTIRE RANGE |
| Scale Name | PRESSURE |
| Overall Diameter | 3.750 INCHES NOMINAL IN |
| Actuation Type | DIAPHRAGM |
| Mounting Method | FLUSH PANEL |
| Scale Inscription/background Color | BLACK MARKINGS ON WHITE BACKGROUND |
| Scale Smallest Increment | 0.5 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | INTERNAL |
| Scale Range | +0.0 TO 60.0 INCHES OF MERCURY IN |
| Mounting Hole Diameter | 0.173 INCHES NOMINAL IN |
| Pointer Type | INDICATING |
| Accessory Components and Quantity | 0.125 IN. NPT NIPPLE 1,ADAPTER 0.125 BY 0.250 IN. NPT 1,RELIEF VALVE 1 IN |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | PROVIDED |
| Dial Size | 2-3/4 IN. DIA IN |
| Graduation Unit | 1.0 POUNDS PER SQUARE INCH LBS |
| Bolt Circle Diameter | 3.500 INCHES NOMINAL IN |
| Connection Location | BACK |
| Pointer Color | BLACK |
| Surface Treatment | ANODIZE |
| Material | GLASS PROTECTIVE CRYSTAL |
| Material | COPPER ALLOY ACTUATING ELEMENT |
| Connection Quantity | 1 |
| Bezel Type | SLIPS-ON |
| Connection Size | 0.125 IN. NPT 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 |
|---|---|
| 61D-1A-0030B PRIMARY | Siemens Water Technologies Corp. Div Wallace & Tiernan Products (USA) |
| Reference | Meaning |
|---|---|
| 61D-1A-0030B | 5/9 Secondary reference Wean United Inc |
| 1319538 | 5/9 Secondary reference Leesona Moos Laboratories a Div of Leesona Corp |
| 61D-1A-0030B | 5/9 Secondary reference Precision Hydro Tools Inc. Dba P H T |
| FA160000 | 5/9 Secondary reference Siemens Water Technologies Corp. Div Wallace & Tiernan Products |
NSN 6685-00-417-3358 is a Gage,absolute Pressure,dial Indi, manufactured by Siemens Water Technologies Corp. Div Wallace & Tiernan Products, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-417-3358 has 1 manufacturer part number on file: 61D-1A-0030B (Siemens Water Technologies Corp. Div Wallace & Tiernan Products).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-503-2519. Verify interchangeability with system specifications before substitution.
Key specifications for 61D-1A-0030B: Mounting Hole Quantity: 4; Scale Accuracy: 0.33 PCT ENTIRE RANGE; Scale Name: PRESSURE; Overall Diameter: 3.750 INCHES NOMINAL IN. 27 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.