The Eyepiece,dual Bores, cataloged under National Stock Number 4920-01-199-4101, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Instrument Technology, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-199-4101 |
| Primary Part Number | 126120 |
| Item Name | Eyepiece,dual Bores |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Instrument Technology, Inc. |
| 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 |
|---|---|
| 126120 PRIMARY | Instrument Technology, Inc. (USA) |
NSN 4920-01-199-4101 is a Eyepiece,dual Bores, manufactured by Instrument Technology, Inc., classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-199-4101 has 1 manufacturer part number on file: 126120 (Instrument Technology, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 5930-01-395-2324, 2940-01-425-6813. Verify interchangeability with system specifications before substitution.
Key specifications for 126120: End Item Identification: F404 (A-18,F-18)ACFT. 0 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.