The Rod,piston,linear Actuating Cyli, cataloged under National Stock Number 3040-01-437-5603, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Hynautic Inc Div of Sta-Rite Industries Inc. Government technical data includes 1 specification, 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 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 | 3040-01-437-5603 |
| Primary Part Number | 550550 |
| Item Name | Rod,piston,linear Actuating Cyli |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Hynautic Inc Div of Sta-Rite Industries Inc |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 550550 PRIMARY | Hynautic Inc Div of Sta-Rite Industries Inc (USA) |
NSN 3040-01-437-5603 is a Rod,piston,linear Actuating Cyli, manufactured by Hynautic Inc Div of Sta-Rite Industries Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-437-5603 has 1 manufacturer part number on file: 550550 (Hynautic Inc Div of Sta-Rite Industries Inc).
1 possible match (shared part number, not a government interchangeability claim): 6545-01-642-1876. Verify interchangeability with system specifications before substitution.
Key specifications for 550550: Overall Length: 23.125 INCHES NOMINAL IN; Special Features: 0.625 IN.NOM DIA IN; Material: STEEL CORROSION RESISTING. 1 specification is 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.