The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-297-1663, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Raytheon Company Dba Raytheon Co. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-297-1663 |
| Primary Part Number | 975427-1 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Design Type | FRICTION |
| Overall Diameter | 3.750 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763, CLASS 303 FED SPEC SINGLE MATERIAL RESPONSE |
| Opening Inside Diameter for Which Designed | 3.494 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 303 |
| Inside Diameter Length | 0.313 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 |
NSN 5340-01-297-1663 is a Cap,protective,dust and Moisture, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-297-1663 has 2 manufacturer part numbers on file: 975427-1 (Raytheon Company), 975427-1 (Raytheon Company Dba Raytheon Co).
Key specifications for 975427-1: Design Type: FRICTION; Overall Diameter: 3.750 INCHES NOMINAL IN; Material Document and Classification: QQ-S-763, CLASS 303 FED SPEC SINGLE MATERIAL RESPONSE; Opening Inside Diameter for Which Designed: 3.494 INCHES NOMINAL IN. 7 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.