The Light,indicator, cataloged under National Stock Number 6340-01-691-3085, is classified within Federal Supply Class 6340 (Aircraft Alarm and Signal Systems) of the Alarm, Signal, and Security Detection Systems group. The manufacturer of record is Siemens Energy and Automation Inc Siemens Furnas Controls Div. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6340-01-691-3085 |
| Primary Part Number | 3SB3644-6BA40 |
| Item Name | Light,indicator |
| FSC / FSG | 6340 / 63 — Aircraft Alarm and Signal Systems |
| Manufacturer | Siemens Energy and Automation Inc Siemens Furnas Controls Div |
| Status | ACTIVE |
| Lens Color | GREEN SINGLE LIGHT FIRST POSITION HORIZONTAL |
| Overall Diameter | 28.0 MILLIMETERS NOMINAL MM |
| Lens Face Surface Condition | CONCENTRIC RINGS SINGLE LIGHT FIRST POSITION HORIZONTAL |
| Lens Quantity | 1 |
| Mounting Method | PANEL LOCATION NOT OTHERWISE SPECIFIED |
| Mounting Method | SCREW ON LENS |
| Style Designator | ROUND FRAME, ROUND LENS TYPE |
| Panel Accommodation Hole Height | 11.0 MILLIMETERS NOMINAL MM |
| Lamp Type Accommodated and Quantity | 1 LIGHT EMITTING DIODE |
| Material | PLASTIC LENS |
| Panel Accommodation Hole Diameter | 22.0 MILLIMETERS NOMINAL MM |
| Terminal Type and Quantity | 2 SCREW |
| Voltage Rating in Volts | 24.0 AC/DC NOMINAL |
| 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 |
|---|---|
| 3SB3644-6BA40 PRIMARY | Siemens Energy and Automation Inc Siemens Furnas Controls Div (USA) |
| Reference | Meaning |
|---|---|
| 3SB644-6BA40 | 5/9 Secondary reference Siemens Energy and Automation Inc Siemens Furnas Controls Div |
NSN 6340-01-691-3085 is a Light,indicator, manufactured by Siemens Energy and Automation Inc Siemens Furnas Controls Div, classified under FSC 6340, Aircraft Alarm and Signal Systems. Status: active.
NSN 6340-01-691-3085 has 1 manufacturer part number on file: 3SB3644-6BA40 (Siemens Energy and Automation Inc Siemens Furnas Controls Div).
Key specifications for 3SB3644-6BA40: Lens Color: GREEN SINGLE LIGHT FIRST POSITION HORIZONTAL; Overall Diameter: 28.0 MILLIMETERS NOMINAL MM; Lens Face Surface Condition: CONCENTRIC RINGS SINGLE LIGHT FIRST POSITION HORIZONTAL; Lens Quantity: 1. 13 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.