The Boot,dust and Moisture Seal, cataloged under National Stock Number 5340-00-439-5278, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 7 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-439-5278 |
| Primary Part Number | L5400451-005-00 |
| Item Name | Boot,dust and Moisture Seal |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Opening Inside Diameter | 1.900 INCHES MINIMUM AND 1.940 INCHES MAXIMUM IN |
| Body Outside Diameter | 2.070 INCHES NOMINAL IN |
| Mounting Method | UNTHREADED HOLE(S) |
| Style Designator | THRU-HOLE |
| Material Document and Classification | ST0105LA006 MFR REF SINGLE MATERIAL RESPONSE BODY |
| Mounting Device Quantity | 1 |
| Material | RUBBER SILICONE BODY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| L5400451-005-00 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 5340-00-439-5278 is a Boot,dust and Moisture Seal, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-439-5278 has 1 manufacturer part number on file: L5400451-005-00 (The Boeing Company Div Legacy Am&m).
Key specifications for L5400451-005-00: Opening Inside Diameter: 1.900 INCHES MINIMUM AND 1.940 INCHES MAXIMUM IN; Body Outside Diameter: 2.070 INCHES NOMINAL IN; Mounting Method: UNTHREADED HOLE(S); Style Designator: THRU-HOLE. 7 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.
NSN 5340-00-439-5278 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.