The Piston,landing Gear Strut, cataloged under National Stock Number 1620-01-020-4931, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Diversified Technology & Development 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-01-020-4931 |
| Primary Part Number | 7530951-03 |
| Item Name | Piston,landing Gear Strut |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Diversified Technology & Development Inc |
| Status | ACTIVE |
| Nominal Overall Length | 7.205 INCHES IN |
| Cylinder Outside Diameter | 4.489 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7530951-03 | Diversified Technology & Development Inc (USA) |
| 7530951-03 | Valley Machine & Engineering, Inc (USA) |
| 7530951-03 | International Precision, Inc (USA) |
| 7530951-03 | Nasco Aircraft Brake, Inc. Dba Nasco Aircraft Brake Inc Div Nasco (USA) |
| 7530951-03 | Stl Enterprises Inc. Dba International Aircraft Supply (USA) |
| 7530951-03 | Perez Machine, Inc. Dba Perez Machine Inc (USA) |
| Reference | Meaning |
|---|---|
| 7530951-03 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1620-01-020-4931 is a Piston,landing Gear Strut, manufactured by Diversified Technology & Development Inc, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-01-020-4931 has 6 manufacturer part numbers on file: 7530951-03 (Diversified Technology & Development Inc), 7530951-03 (Valley Machine & Engineering, Inc), 7530951-03 (International Precision, Inc), 7530951-03 (Nasco Aircraft Brake, Inc. Dba Nasco Aircraft Brake Inc Div Nasco), 7530951-03 (Stl Enterprises Inc. Dba International Aircraft Supply) and 1 more.
Key specifications for 7530951-03: Nominal Overall Length: 7.205 INCHES IN; Special Features: RING GROOVE OD 4.393 IN. MAX 4.391 IN. MIN,RING GROOVE ID 4.026 IN. MAX 4.024 IN. MIN IN; Cylinder Outside Diameter: 4.489 INCHES NOMINAL IN. 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.
NSN 1620-01-020-4931 has DEMIL Code B. 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.