The Tester,vacuum Gage, cataloged under National Stock Number 6685-01-356-3564, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 6685-01-356-3564 |
| Item Name | Tester,vacuum Gage |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Scale Accuracy | 2 PERCENT OF SCALE |
| Functional Description | PREFORMS CALIBRATION OF THE BARITRON PRESSURE GAGE; SCALE RANGE 0 TO 1000 TORR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| PC-3VB | 3/9 Design control — primary reference Pernicka Corporation |
| VC-1 | 5/9 Secondary reference Pernicka Corporation |
NSN 6685-01-356-3564 is a Tester,vacuum Gage, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5975-01-642-1676, 5995-01-689-4069, 5120-01-728-5324. Verify interchangeability with system specifications before substitution.
Key specifications for 6685-01-356-3564: Scale Accuracy: 2 PERCENT OF SCALE; Functional Description: PREFORMS CALIBRATION OF THE BARITRON PRESSURE GAGE; SCALE RANGE 0 TO 1000 TORR; End Item Identification: P/N T044A179-01 TEST STAND FOR B-1B INU. 2 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.