The Reflectometer,optical Time Domai, cataloged under National Stock Number 6625-01-643-1099, 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 Wilcom Inc Dba Wilcom Inc. Government technical data includes 4 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6625-01-643-1099 |
| Primary Part Number | F6121A |
| Item Name | Reflectometer,optical Time Domai |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Wilcom Inc Dba Wilcom Inc |
| Status | ACTIVE |
| Optical Fiber Tested Type | SINGLE-MODE |
| Power Source | EXTERNAL |
| Unpackaged Unit Weight | 227.0 GRAMS G |
| Optical Pulse Wavelength in Nanometers | 1550 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| F6121A PRIMARY | Wilcom Inc Dba Wilcom Inc (USA) |
NSN 6625-01-643-1099 is a Reflectometer,optical Time Domai, manufactured by Wilcom Inc Dba Wilcom Inc, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-01-643-1099 has 1 manufacturer part number on file: F6121A (Wilcom Inc Dba Wilcom Inc).
1 possible match (shared part number, not a government interchangeability claim): 6070-01-659-3690. Verify interchangeability with system specifications before substitution.
Key specifications for F6121A: Optical Fiber Tested Type: SINGLE-MODE; Overall Height: 7.75 INCHES NOMINAL IN; Power Source: EXTERNAL; Overall Width: 1.25 INCHES NOMINAL IN. 4 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.