The AC Filter Box Assembly, cataloged under National Stock Number 4140-01-519-1092, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Manassas. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-519-1092 |
| Primary Part Number | B968 |
| Item Name | AC Filter Box Assembly |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms - Manassas |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 144226-2 | Drs Technologies Canada Ltd (CAN) |
| B968 PRIMARY | Lockheed Martin Corporation Div Rms - Manassas (USA) |
| Reference | Meaning |
|---|---|
| 144226-2 | 5/9 Secondary reference Drs Technologies Canada Ltd |
| B968 | 3/2 Design control — primary reference U.S. Government activity |
| 144226-2 | 5/2 Secondary reference U.S. Government activity |
NSN 4140-01-519-1092 is a AC Filter Box Assembly, manufactured by Lockheed Martin Corporation Div Rms - Manassas, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-519-1092 has 2 manufacturer part numbers on file: 144226-2 (Drs Technologies Canada Ltd), B968 (Lockheed Martin Corporation Div Rms - Manassas).
Key specifications for B968: Criticality Code Justification: FEAT; Special Features: WEAPON SYSTEM ESSENTIAL; Part Name Assigned by Controlling Agency: AC FILTER BOX ASSEMBLY; End Item Identification: AN/UYQ-70(V) ADV DISPLAY SYS N/A FOR COSAL USE; ON-568(V)/UYQ-70(V), SECURE VOICE SYSTEM. 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.
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.