The Indicator,rate of Flow, cataloged under National Stock Number 6680-00-321-1004, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Hoffer Flow Controls Inc Dba Hoffer Flow Controls Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-00-321-1004 |
| Primary Part Number | 649-C-2001-3 |
| Item Name | Indicator,rate of Flow |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Hoffer Flow Controls Inc Dba Hoffer Flow Controls Inc |
| Status | ACTIVE |
| Phase | SINGLE |
| Contact Type | SOCKET |
| Current Type | DC |
| Electrical Connection Identifying Number | MS33680-10SL-4,MS33682-14S-2 |
| Diameter | 2.750 INCHES NOMINAL IN |
| Depth | 5.250 INCHES NOMINAL IN |
| Frequency Rating | 20.0 HERTZ MINIMUM AND 450.0 HERTZ MAXIMUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 649-C-2001-3 PRIMARY | Hoffer Flow Controls Inc Dba Hoffer Flow Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| 123SEAV16081-5 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| 123SEAV16081-5 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 6680-00-321-1004 is a Indicator,rate of Flow, manufactured by Hoffer Flow Controls Inc Dba Hoffer Flow Controls Inc, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-00-321-1004 has 1 manufacturer part number on file: 649-C-2001-3 (Hoffer Flow Controls Inc Dba Hoffer Flow Controls Inc).
Key specifications for 649-C-2001-3: Phase: SINGLE; Contact Type: SOCKET; Current Type: DC; Electrical Connection Identifying Number: MS33680-10SL-4,MS33682-14S-2. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.