The Stop,extension,shock Strut Assy, cataloged under National Stock Number 1620-01-150-9393, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Machine Specialties, Llc. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Stop,extension,shock Strut Assy |
| FSC / FSG | 1620 — Aircraft Landing Gear Components (FSG 16) |
| Manufacturers | Machine Specialties, Llc (CAGE 1DDX0); Heroux-Devtek Inc (CAGE 36164); Hdi Landing Gear Usa Inc (CAGE 5ZBP4) |
| Parameter | Value |
|---|---|
| NSN | 1620-01-150-9393 |
| Primary Part Number | 458-56177-1 |
| Item Name | Stop,extension,shock Strut Assy |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Machine Specialties, Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| 458-56177-1 | Machine Specialties, Llc (USA) |
| 458-56177-1 | Heroux-Devtek Inc (CAN) |
| 458-56177-1 | Hdi Landing Gear Usa Inc (USA) |
| Reference | Meaning |
|---|---|
| 458-56177-1 | 5/2 Secondary reference U.S. Government activity |
| 458-56177-1 | 3/2 Design control — primary reference U.S. Government activity |
| 458-56177 | D/9 Drawing number reference only U.S. Government activity |
NSN 1620-01-150-9393 is a Stop,extension,shock Strut Assy, manufactured by Machine Specialties, Llc, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-01-150-9393 has 3 manufacturer part numbers on file: 458-56177-1 (Machine Specialties, Llc), 458-56177-1 (Heroux-Devtek Inc), 458-56177-1 (Hdi Landing Gear Usa Inc).
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 1620-01-150-9393 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.