The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-256-3367, 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 Tld Ace Corp Div Tld Ace. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Indicator,sight,liquid |
| FSC / FSG | 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments (FSG 66) |
| Manufacturers | Tld Ace Corp Div Tld Ace (CAGE 00365) |
| Parameter | Value |
|---|---|
| NSN | 6680-01-256-3367 |
| Primary Part Number | 1030615 |
| Item Name | Indicator,sight,liquid |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Tld Ace Corp Div Tld Ace |
| Status | ACTIVE |
| 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 |
|---|---|
| 1030615 PRIMARY | Tld Ace Corp Div Tld Ace (USA) |
| Reference | Meaning |
|---|---|
| 1009853 | 5/9 Secondary reference Tld Ace Corp Div Tld Ace |
| 1001669 | 5/9 Secondary reference Tld Ace Corp Div Tld Ace |
| 898B-13ST | 5/9 Secondary reference Superior Valve Co |
| MI-31A-1 3/8S | 5/9 Secondary reference Henry Technologies, Inc. |
NSN 6680-01-256-3367 is a Indicator,sight,liquid, manufactured by Tld Ace Corp Div Tld Ace, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-256-3367 has 1 manufacturer part number on file: 1030615 (Tld Ace Corp Div Tld Ace).
2 possible matches (shared part number, not a government interchangeability claim): 6210-01-328-0113, 5330-01-591-3598. Verify interchangeability with system specifications before substitution.
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.