The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-259-4239, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Bisco Industries, Inc. Div Bisco Industries. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-259-4239 |
| Primary Part Number | C11A |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Bisco Industries, Inc. Div Bisco Industries |
| Status | ACTIVE |
| Design Type | FRICTION |
| Tube Outside Diameter for Which Designed | 0.438 INCHES NOMINAL IN |
| Material | PLASTIC VINYL |
| Inside Diameter Length | 0.594 INCHES NOMINAL IN |
| Round Cap Outside Surface Condition | SMOOTH |
| 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 |
|---|---|
| C11A | Bisco Industries, Inc. Div Bisco Industries (USA) |
| Reference | Meaning |
|---|---|
| C-11 | 5/9 Secondary reference Robroy Industries Inc Robroy Plastics Div |
| C-11 | 3/9 Design control — primary reference Robroy Industries Inc |
NSN 5340-01-259-4239 is a Cap,protective,dust and Moisture, manufactured by Bisco Industries, Inc. Div Bisco Industries, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-259-4239 has 1 manufacturer part number on file: C11A (Bisco Industries, Inc. Div Bisco Industries).
Key specifications for C11A: Design Type: FRICTION; Tube Outside Diameter for Which Designed: 0.438 INCHES NOMINAL IN; Material: PLASTIC VINYL; Inside Diameter Length: 0.594 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.