The Plug,protective,dust and Moistur, cataloged under National Stock Number 5340-01-259-7144, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Heyco Inc Dba Heyco Products. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-01-259-7144 |
| Primary Part Number | 2783 /BLACK/ |
| Item Name | Plug,protective,dust and Moistur |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Heyco Inc Dba Heyco Products |
| Status | ACTIVE |
| Design Type | FRICTION |
| Overall Diameter | 2.141 INCHES NOMINAL IN |
| Opening Inside Diameter for Which Designed | 2.000 INCHES NOMINAL IN |
| Material | PLASTIC POLYAMIDE NYLON |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 999/4/35300/004 | Selex Es Ltd (GBR) |
| 2783 /BLACK/ PRIMARY | Heyco Inc Dba Heyco Products (USA) |
| DP2000 BLACK | Heyco Inc Dba Heyco Products (USA) |
| Reference | Meaning |
|---|---|
| 999/4/35300/004 | 5/9 Secondary reference Gec Marconi Secure Systems |
NSN 5340-01-259-7144 is a Plug,protective,dust and Moistur, manufactured by Heyco Inc Dba Heyco Products, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-259-7144 has 3 manufacturer part numbers on file: 999/4/35300/004 (Selex Es Ltd), 2783 /BLACK/ (Heyco Inc Dba Heyco Products), DP2000 BLACK (Heyco Inc Dba Heyco Products).
Key specifications for 2783 /BLACK/: Design Type: FRICTION; Overall Diameter: 2.141 INCHES NOMINAL IN; Opening Inside Diameter for Which Designed: 2.000 INCHES NOMINAL IN; Material: PLASTIC POLYAMIDE NYLON. 4 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.
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.