The Cover,protective,dust and Moistu, cataloged under National Stock Number 5340-01-499-6497, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Dh Instruments Inc.. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-499-6497 |
| Primary Part Number | 122889 |
| Item Name | Cover,protective,dust and Moistu |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Dh Instruments Inc. |
| Status | ACTIVE |
| Closed End Overall Diameter | 104.0 MILLIMETERS NOMINAL MM |
| Material Document and Classification | QQ-A-200/8, ALLOY 6061-T6511 FED SPEC SINGLE MATERIAL RESPONSE |
| Open End Inside Diameter | 25.0 MILLIMETERS NOMINAL MM |
| Material | ALUMINUM ALLOY 6061 |
| 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 |
|---|---|
| 122889 PRIMARY | Dh Instruments Inc. (USA) |
| Reference | Meaning |
|---|---|
| U02889 | D/9 Drawing number reference only Dh Instruments Inc. |
NSN 5340-01-499-6497 is a Cover,protective,dust and Moistu, manufactured by Dh Instruments Inc., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-499-6497 has 1 manufacturer part number on file: 122889 (Dh Instruments Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 2520-01-505-4268, 5310-01-585-2407. Verify interchangeability with system specifications before substitution.
Key specifications for 122889: Closed End Overall Diameter: 104.0 MILLIMETERS NOMINAL MM; Material Document and Classification: QQ-A-200/8, ALLOY 6061-T6511 FED SPEC SINGLE MATERIAL RESPONSE; Open End Inside Diameter: 25.0 MILLIMETERS NOMINAL MM; End Item Identification: PPF-HYDRAULIC PRESSURE CALIBRATION EQUIPMENT. 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.