The Plug,protective,dust and Moistur, cataloged under National Stock Number 5340-01-256-0503, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-256-0503 |
| Primary Part Number | 52C7651-8 |
| Item Name | Plug,protective,dust and Moistur |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba |
| Status | ACTIVE |
| Design Type | FRICTION |
| Overall Diameter | 1.370 INCHES NOMINAL IN |
| Features Provided | BEVELED SEAT |
| Opening Inside Diameter for Which Designed | 1.040 INCHES NOMINAL IN |
| Material | PLASTIC, POLYETHYLENE (PP) |
| 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 |
|---|---|
| 52C7651-8 | Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba (USA) |
| DSC173-9 | De Havilland Aircraft of Canada Limited (CAN) |
| Reference | Meaning |
|---|---|
| BPF-1 | 5/9 Secondary reference U.S. Government activity |
| BPF-SI-413 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-256-0503 is a Plug,protective,dust and Moistur, manufactured by Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-256-0503 has 2 manufacturer part numbers on file: 52C7651-8 (Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba), DSC173-9 (De Havilland Aircraft of Canada Limited).
Key specifications for 52C7651-8: Design Type: FRICTION; Overall Diameter: 1.370 INCHES NOMINAL IN; Features Provided: BEVELED SEAT; Opening Inside Diameter for Which Designed: 1.040 INCHES NOMINAL IN. 5 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.