The Cover Set,protective, cataloged under National Stock Number 4920-01-644-5333, 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 The Boeing Company Div Services. 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 | 4920-01-644-5333 |
| Primary Part Number | 74D740535-1001 |
| Item Name | Cover Set,protective |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | The Boeing Company Div Services |
| Status | ACTIVE |
| Supplementary Features | LOWER VENT COVER SECURED IN PLACE WITH NYLON WEBBING TYPE STRAP THAT WRAPS AROUND THE SENSORY ASSEMBLY AND ALSO ATTACHES TO UPPER EXHAUST COVER; UPPER EXHAUST COVER ASSEMBLY (2 PIECES) IS SECURED USING FRICTION FIT AND ONE BALL LOCK PIN; UPPER INLET COVER SECURED USING FRICTION FIT AND IS TETHERED TO UPPER EXHAUST COVER WITH LANYARD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 74D740535-1001 PRIMARY | The Boeing Company Div Services (USA) |
NSN 4920-01-644-5333 is a Cover Set,protective, manufactured by The Boeing Company Div Services, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-644-5333 has 1 manufacturer part number on file: 74D740535-1001 (The Boeing Company Div Services).
Key specifications for 74D740535-1001: Supplementary Features: LOWER VENT COVER SECURED IN PLACE WITH NYLON WEBBING TYPE STRAP THAT WRAPS AROUND THE SENSORY ASSEMBLY AND ALSO ATTACHES TO UPPER EXHAUST COVER; UPPER EXHAUST COVER ASSEMBLY (2 PIECES) IS SECURED USING FRICTION FIT AND ONE BALL LOCK PIN; UPPER INLET COVER SECURED USING FRICTION FIT AND IS TETHERED TO UPPER EXHAUST COVER WITH LANYARD; Special Features: PROTECTS ECU INLET, EXHAUST AND VENT OPENINGS DURING GROUND OPERATIONS AND AIRCRAFT WASH DOWN; CONSISTS OF ONE UPPER INLET COVER, 12X6X2 IN; LOWER VENT COVER, 8X9X0.9 IN; UPPER EXHAUST COVER (2 PIECES) 12X6X2 AND 12X10X2 IN; ALL STORED IN SOFT STORAGE BAG, RED IN COLOR, HELD TOGETHER WITH A LANYARD; COVER SET HAS ONE "REMOVE BEFORE FLIGHT" STREAMER SEWN TO STRAP ON LOWER EXHAUSST COVER IN; Part Name Assigned by Controlling Agency: COVER SET,IRST ECU; End Item Identification: F/A-18; IRST SYSTEM; FUEL TANK ASSEMBLY, SENSOR ASSEMBLY, ELECTRONIC FLUID COOLER. 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 4920-01-644-5333 has DEMIL Code Q. 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.