The Gage,vacuum,indicating, cataloged under National Stock Number 6685-01-033-9900, 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 27 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6685-01-033-9900 |
| Primary Part Number | J1105 |
| Item Name | Gage,vacuum,indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Bellofram Corporation |
| Status | ACTIVE |
| Scale Accuracy | PORM 2 PCT MIDDLE HALF,PORM 3 PCT REMAINDER |
| Scale Name | VACUUM |
| Overall Diameter | 2.188 INCHES NOMINAL IN |
| Actuation Type | BOURDON TUBE |
| Mounting Connection Location | BOTTOM |
| Mounting Method | RIGID STEM |
| Scale Inscription/background Color | BLACK MARKINGS ON WHITE BACKGROUND |
| Scale Smallest Increment | 1.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 30.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 2 IN. DIA IN |
| Graduation Unit | 5.0 POUNDS PER SQUARE INCH LBS |
| Connection Location | BOTTOM |
| Pointer Color | BLACK |
| Surface Treatment | ENAMEL CASE |
| Surface Treatment | ENAMEL LOCATION NOT OTHERWISE SPECIFIED |
| Material | STEEL CASE |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| 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 |
|---|---|
| J1105 PRIMARY | Bellofram Corporation (USA) |
| 7M757-1 | Ametek, Inc. Div Aerospace & Defense (USA) |
| 57-G-196-2400 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 7M757-1 | 5/9 Secondary reference The Boeing Company Div Defense |
| J1105 | 5/9 Secondary reference Desco Corp Marsh Bellofram Div |
NSN 6685-01-033-9900 is a Gage,vacuum,indicating, manufactured by Bellofram Corporation, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-033-9900 has 3 manufacturer part numbers on file: J1105 (Bellofram Corporation), 7M757-1 (Ametek, Inc. Div Aerospace & Defense), 57-G-196-2400 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 1615-01-221-5868. Verify interchangeability with system specifications before substitution.
Key specifications for J1105: Scale Accuracy: PORM 2 PCT MIDDLE HALF,PORM 3 PCT REMAINDER; Scale Name: VACUUM; Overall Diameter: 2.188 INCHES NOMINAL IN; Actuation Type: BOURDON TUBE. 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.