The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-042-8463, 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 Bellofram Corporation. Government technical data includes 26 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 6685-00-042-8463 |
| Primary Part Number | 1WRH59377ATC001 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Bellofram Corporation |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| Scale Accuracy | 1/2 PCT |
| Scale Name | PRESSURE |
| Overall Diameter | 7.796 INCHES NOMINAL IN |
| Actuation Type | SINGLE BOURDON TUBE |
| Mounting Method | FLUSH PANEL |
| Scale Smallest Increment | 100.000 POUNDS LBS |
| Scale Range | +0.000 TO 10000.000 POUNDS PRESSURE PER SQUARE INCH LBS |
| Mounting Hole Diameter | 0.218 INCHES NOMINAL IN |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 6.00 |
| Graduation Unit | 1000.000 POUNDS LBS |
| Bolt Circle Diameter | 7.000 INCHES NOMINAL IN |
| Connection Location | BACK |
| Color | BLACK CASE |
| Pointer Color | BLACK |
| Surface Treatment | PAINT EPOXY CASE |
| Material | STEEL CASE |
| Material | GLASS PROTECTIVE CRYSTAL |
| Material | STEEL ACTUATING ELEMENT |
| Connection Quantity | 1 |
| Bezel Type | HINGE |
| Connection Size | 7/16-20 UNF-3A A |
| 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 |
|---|---|
| Q4500-103 | Testek Llc Dba Testek Solutions (USA) |
| 1WRH59377ATC001 PRIMARY | Bellofram Corporation (USA) |
| Reference | Meaning |
|---|---|
| Q4600-103 | 5/9 Secondary reference Aai Corporation Div Mississippi Operations |
| 6-100FMH1-4LBM10000RS080 | 5/9 Secondary reference Desco Corp Marsh Bellofram Div |
| 1913 | C/1 Advisory reference — outside the item-of-supply concept Ametek, Inc. Div Aerospace & Defense |
| 309-052 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 6685-00-042-8463 is a Gage,pressure,dial Indicating, manufactured by Bellofram Corporation, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-042-8463 has 2 manufacturer part numbers on file: Q4500-103 (Testek Llc Dba Testek Solutions), 1WRH59377ATC001 (Bellofram Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 5905-00-648-9372, 6685-00-951-4540. Verify interchangeability with system specifications before substitution.
Key specifications for 1WRH59377ATC001: Mounting Hole Quantity: 3; Scale Accuracy: 1/2 PCT; Scale Name: PRESSURE; Overall Diameter: 7.796 INCHES NOMINAL IN. 26 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.