The Cylinder Assembly,actuating,line, cataloged under National Stock Number 3040-01-507-3949, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Cal-West Machining. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-507-3949 |
| Primary Part Number | D3843-01 |
| Item Name | Cylinder Assembly,actuating,line |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Cal-West Machining |
| Status | ACTIVE |
| Compressed Length | 18.000 INCHES NOMINAL IN |
| Extended Length | 40.000 INCHES NOMINAL IN |
| Design Characteristics | DOUBLE ACTING TWIN CYLINDER |
| Body Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| D3843-01 PRIMARY | Cal-West Machining (USA) |
| Reference | Meaning |
|---|---|
| 290-405 | 7/9 Vendor item drawing reference Sunbelt Design & Development, Inc |
| D3843 | D/9 Drawing number reference only Cal-West Machining |
NSN 3040-01-507-3949 is a Cylinder Assembly,actuating,line, manufactured by Cal-West Machining, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-507-3949 has 1 manufacturer part number on file: D3843-01 (Cal-West Machining).
1 possible match (shared part number, not a government interchangeability claim): 5315-01-508-5054. Verify interchangeability with system specifications before substitution.
Key specifications for D3843-01: Compressed Length: 18.000 INCHES NOMINAL IN; Extended Length: 40.000 INCHES NOMINAL IN; Design Characteristics: DOUBLE ACTING TWIN CYLINDER; Body Material: STEEL. 4 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.