The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-500-2437, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Sinclair & Rush, Inc. Dba Sinclair & Rush Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-500-2437 |
| Primary Part Number | 140423 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Sinclair & Rush, Inc. Dba Sinclair & Rush Inc |
| Status | ACTIVE |
| Design Type | FRICTION |
| Overall Diameter | 10.030 INCHES NOMINAL IN |
| Material | PLASTIC VINYL |
| Inside Diameter Length | 0.870 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 |
|---|---|
| 140423 | Sinclair & Rush, Inc. Dba Sinclair & Rush Inc (USA) |
| Reference | Meaning |
|---|---|
| 31-15-5515-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-500-2437 is a Cap,protective,dust and Moisture, manufactured by Sinclair & Rush, Inc. Dba Sinclair & Rush Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-500-2437 has 1 manufacturer part number on file: 140423 (Sinclair & Rush, Inc. Dba Sinclair & Rush Inc).
1 possible match (shared part number, not a government interchangeability claim): 6150-01-505-2753. Verify interchangeability with system specifications before substitution.
Key specifications for 140423: Design Type: FRICTION; Overall Diameter: 10.030 INCHES NOMINAL IN; Special Features: ITEM IS BLACK; BOTTOM DIAMETER IS 9.000 INCHES IN; Part Name Assigned by Controlling Agency: FLANGE COVER. 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.