The Trunnion Assy-Steering Cylinder, cataloged under National Stock Number 1620-01-172-6741, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Tactair Fluid Controls Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-01-172-6741 |
| Primary Part Number | 355841-7 |
| Item Name | Trunnion Assy-Steering Cylinder |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Tactair Fluid Controls Inc |
| Status | ACTIVE |
| FSC Application Data | NOSE LANDING GEAR,STEERING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 355841-7 | Tactair Fluid Controls Inc (USA) |
| 355841-7 | Frazier Aviation Inc (USA) |
| 355841-7 | Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val (USA) |
| 355841-7 | International Precision, Inc (USA) |
| 355841-7 | Airborne Technologies, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 355841-7 | 5/9 Secondary reference Woodward Hrt, Inc. Dba Woodward Hrt Inc |
| 355841-7 | 5/9 Secondary reference Advanced Metal Products Inc Div Advanced Metal Products |
| 1620PL1618953 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 355841-7 | 5/9 Secondary reference U.S. Government activity |
| 355841-7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1620-01-172-6741 is a Trunnion Assy-Steering Cylinder, manufactured by Tactair Fluid Controls Inc, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-01-172-6741 has 5 manufacturer part numbers on file: 355841-7 (Tactair Fluid Controls Inc), 355841-7 (Frazier Aviation Inc), 355841-7 (Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val), 355841-7 (International Precision, Inc), 355841-7 (Airborne Technologies, Inc.).
Key specifications for 355841-7: FSC Application Data: NOSE LANDING GEAR,STEERING; End Item Identification: AIRCRAFT C-130. 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.
NSN 1620-01-172-6741 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.