The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-561-7931, 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 19 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-561-7931 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Scale Accuracy | 1 PCT FULL SCALE |
| Overall Diameter | 64.0 MILLIMETERS NOMINAL MM |
| Actuation Type | BOURDON TUBE |
| Mounting Connection Location | BACK |
| Mounting Method | U-CLAMP |
| Reference Data and Literature | DHI VENDOR ITEM DWG 103684 |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 20000.0 POUNDS PER SQUARE INCH LBS |
| Material Document and Classification | AISI 316 ASSN STD SINGLE MATERIAL RESPONSE ACTUATING ELEMENT |
| Material Document and Classification | AISI 0304 ASSN STD SINGLE MATERIAL RESPONSE CASE |
| Pointer Type | INDICATING |
| Scale Type | DIAL AND INCLOSED METAL |
| Dial Size | 2-1/2 IN IN |
| Connection Location | LOWER REAR RIGHT SIDE |
| Material | STEEL COMP 304 CASE |
| Material | STEEL COMP 316 ACTUATING ELEMENT |
| Material | STEEL CORROSION RESISTING PROTECTIVE CRYSTAL |
| Connection Quantity | 1 |
| Connection Size | 1/4 NPT |
| 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 |
|---|---|
| 103684 | 7/2 Vendor item drawing reference Dh Instruments Inc. |
| KQUK-1/4MPMO | 3/9 Design control — primary reference Mc Daniel Controls |
NSN 6685-01-561-7931 is a Gage,pressure,dial Indicating, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-01-561-7931: Scale Accuracy: 1 PCT FULL SCALE; Overall Diameter: 64.0 MILLIMETERS NOMINAL MM; Actuation Type: BOURDON TUBE; Mounting Connection Location: BACK. 19 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.