The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-521-2935, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-01-521-2935 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Design Type | FRICTION |
| Overall Diameter | 1.640 INCHES NOMINAL IN |
| Specification/standard Data | 80205-NAS837 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Opening Inside Diameter for Which Designed | 1.390 INCHES NOMINAL IN |
| Material | PLASTIC, POLYETHYLENE (PP) |
| Inside Diameter Length | 0.625 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 |
| Reference | Meaning |
|---|---|
| NAS837 | 3/1 Design control — primary reference U.S. Government activity |
| NAS837-24 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-521-2935 is a Cap,protective,dust and Moisture, classified under FSC 5340, Hardware, Commercial. Status: active.
9 possible matches (shared part number, not a government interchangeability claim): 5340-01-521-2937, 5340-01-521-4144, 5340-01-615-7336. Verify interchangeability with system specifications before substitution.
Key specifications for 5340-01-521-2935: Design Type: FRICTION; Overall Diameter: 1.640 INCHES NOMINAL IN; Specification/standard Data: 80205-NAS837 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD; Opening Inside Diameter for Which Designed: 1.390 INCHES NOMINAL IN. 6 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.