The Frequency Reference and Electron, cataloged under National Stock Number 6625-01-571-6580, is classified within Federal Supply Class 6625 (Electrical and Electronic Properties Measuring and Testing Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Brandywine Communications. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-01-571-6580 |
| Primary Part Number | IBU-240 |
| Item Name | Frequency Reference and Electron |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Brandywine Communications |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | JH |
| Weight | 9.2000 lbs |
| Cube | 1.8059 cu ft |
| Part Number | Manufacturer |
|---|---|
| IBU-240 PRIMARY | Brandywine Communications (USA) |
| 019000001 | Brandywine Communications (USA) |
| 430-8279639 ITEM NO 4 | Naval Sea Systems Command (USA) |
| FXINF0159 | Hexagon Us Federal, Inc Dba Intergraph Corp (USA) |
| Reference | Meaning |
|---|---|
| 430-8279648 ITEM NO 3 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 6625-01-571-6580 is a Frequency Reference and Electron, manufactured by Brandywine Communications, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-01-571-6580 has 4 manufacturer part numbers on file: IBU-240 (Brandywine Communications), 019000001 (Brandywine Communications), 430-8279639 ITEM NO 4 (Naval Sea Systems Command), FXINF0159 (Hexagon Us Federal, Inc Dba Intergraph Corp).
Key specifications for IBU-240: Part Name Assigned by Controlling Agency: TIMING DISTRIBUTION UNIT; End Item Identification: NAVIGATION TIMING SIGNAL. 0 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.