The Plug,protective,dust and Moistur, cataloged under National Stock Number 5340-01-336-7990, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Aimtron Systems, Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-336-7990 |
| Primary Part Number | 510493 |
| Item Name | Plug,protective,dust and Moistur |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Aimtron Systems, Llc |
| Status | ACTIVE |
| Design Type | THREADED |
| Drive Type | HEX HEAD |
| Material Document and Classification | QQ-S-763, COND A FED SPEC SINGLE MATERIAL RESPONSE |
| Features Provided | SHOULDER |
| Surface Treatment | PASSIVATE |
| Thread Class | 2A A |
| Material | STEEL COMP 304 |
| Thread Size and Series/type Designator | 1/4-20 UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 510493 PRIMARY | Aimtron Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 510493 | 5/9 Secondary reference Cardion Inc |
NSN 5340-01-336-7990 is a Plug,protective,dust and Moistur, manufactured by Aimtron Systems, Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-336-7990 has 1 manufacturer part number on file: 510493 (Aimtron Systems, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 9905-01-566-6688, 7025-01-695-2420. Verify interchangeability with system specifications before substitution.
Key specifications for 510493: Design Type: THREADED; Drive Type: HEX HEAD; Material Document and Classification: QQ-S-763, COND A FED SPEC SINGLE MATERIAL RESPONSE; Features Provided: SHOULDER. 8 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.