The Cap,linear Actuating Cylinder, cataloged under National Stock Number 3040-01-021-8739, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Heroux-Devtek Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-021-8739 |
| Primary Part Number | 337253-11 |
| Item Name | Cap,linear Actuating Cylinder |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Heroux-Devtek Inc |
| Status | ACTIVE |
| Outside Diameter | 3.880 INCHES MINIMUM AND 3.882 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 337253-11 | Heroux-Devtek Inc (CAN) |
| 337253-11 | G3M (USA) |
| 337253-11 | Goodrich Corporation (USA) |
| 337253-11 | Allclear Aerospace & Defense, Inc. Dba Allclear Aerospace & Defense Inc (USA) |
| 337253-11 | Hydromach Inc Dba Hydromach Inc (USA) |
| 337253-11 | Es3 Prime Logistics Group Inc Dba Es3 Plg (USA) |
| Reference | Meaning |
|---|---|
| 337253-11 | 3/2 Design control — primary reference U.S. Government activity |
| 337253-11 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 337253-11 | 5/9 Secondary reference Lockheed Martin Services, Llc |
| 337253-5 | 5/9 Secondary reference U.S. Government activity |
NSN 3040-01-021-8739 is a Cap,linear Actuating Cylinder, manufactured by Heroux-Devtek Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-021-8739 has 6 manufacturer part numbers on file: 337253-11 (Heroux-Devtek Inc), 337253-11 (G3M), 337253-11 (Goodrich Corporation), 337253-11 (Allclear Aerospace & Defense, Inc. Dba Allclear Aerospace & Defense Inc), 337253-11 (Hydromach Inc Dba Hydromach Inc) and 1 more.
Key specifications for 337253-11: Outside Diameter: 3.880 INCHES MINIMUM AND 3.882 INCHES MAXIMUM IN; Special Features: MATERIAL DOCUMENT AND CLASSIFICATION:COMP 4340 MIL-S-5000 COND C-4;3.625-16 IN.N 3A YHD ONE END A; End Item Identification: AIRCRAFT MODEL C-130; Material: STEEL. 2 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.