The Mirror Assembly,calibration, cataloged under National Stock Number 4931-01-073-6817, is classified within Federal Supply Class 4931 (Fire Control Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4931-01-073-6817 |
| Primary Part Number | 2120655-002 |
| Item Name | Mirror Assembly,calibration |
| FSC / FSG | 4931 / 49 — Fire Control Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc |
| Status | ACTIVE |
| Functional Description | USED TO PROVIDE A METHOD FOR ESTABLISHING THAT THE YAW AND PITCH AXIS OF OPTICAL BENCH ARE ALIGNED IN RESPECT TO THE LRU MOUNTING PROVISIONS ON THE OPTICAL BENCH WITHIN ANGULAR TOLERANCES NO GREATER THA 1/5 OF THE LRU TEST TOLERANCES (APPX. 10 ARC-SECONDS) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2120655-002 PRIMARY | Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc (USA) |
NSN 4931-01-073-6817 is a Mirror Assembly,calibration, manufactured by Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc, classified under FSC 4931, Fire Control Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4931-01-073-6817 has 1 manufacturer part number on file: 2120655-002 (Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc).
Key specifications for 2120655-002: Functional Description: USED TO PROVIDE A METHOD FOR ESTABLISHING THAT THE YAW AND PITCH AXIS OF OPTICAL BENCH ARE ALIGNED IN RESPECT TO THE LRU MOUNTING PROVISIONS ON THE OPTICAL BENCH WITHIN ANGULAR TOLERANCES NO GREATER THA 1/5 OF THE LRU TEST TOLERANCES (APPX. 10 ARC-SECONDS); Part Name Assigned by Controlling Agency: MIRROR ASSEMBLY, CALIBRATION; End Item Identification: F-16 AIRCRAFT. 1 specification is 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.
NSN 4931-01-073-6817 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.