The Plug,leakproof Seal, cataloged under National Stock Number 5340-01-700-3984, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Sea-Dog Line Div of Sneve-Nysether 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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-700-3984 |
| Primary Part Number | 520020 |
| Item Name | Plug,leakproof Seal |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Sea-Dog Line Div of Sneve-Nysether Inc |
| Status | ACTIVE |
| Overall Diameter | 1.0 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 520020 PRIMARY | Sea-Dog Line Div of Sneve-Nysether Inc (USA) |
NSN 5340-01-700-3984 is a Plug,leakproof Seal, manufactured by Sea-Dog Line Div of Sneve-Nysether Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-700-3984 has 1 manufacturer part number on file: 520020 (Sea-Dog Line Div of Sneve-Nysether Inc).
Key specifications for 520020: Overall Diameter: 1.0 INCHES NOMINAL IN; Special Features: CONSTRUCTED OF UV RESISTANT INJECTION MOLDED NYLON WITH CHROME PLATED FORMED BRASS BASE.; Part Name Assigned by Controlling Agency: DRAIN PLUG; End Item Identification: 4610-01-688-0542. 1 specification is 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.