The Nut,extension,strut, cataloged under National Stock Number 1620-00-475-9456, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Goodrich Corporation. Government technical data includes 4 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-00-475-9456 |
| Primary Part Number | 2578841-001A |
| Item Name | Nut,extension,strut |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Goodrich Corporation |
| Status | ACTIVE |
| Overall Diameter | 4.515 INCHES NOMINAL IN |
| General Characteristics Item Description | 3.700 IN. INSIDE DIA; 4.125 IN. UNJ-16-3B INTERNAL THREADS PER MIL-S-8879; 6 HOLES EQUALLY SPACED 0.250 IN. INSIDE DIA AROUND OUTSIDE IN |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 2578841-001A PRIMARY | Goodrich Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2578841-001A | 5/9 Secondary reference Goodrich Corp Dba Goodrich Corp |
| 2578841-001A | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
| 2578841-001A | 3/9 Design control — primary reference Goodrich Corporation Div Advanced Structures Landing Systems |
NSN 1620-00-475-9456 is a Nut,extension,strut, manufactured by Goodrich Corporation, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-00-475-9456 has 1 manufacturer part number on file: 2578841-001A (Goodrich Corporation).
Key specifications for 2578841-001A: Overall Diameter: 4.515 INCHES NOMINAL IN; General Characteristics Item Description: 3.700 IN. INSIDE DIA; 4.125 IN. UNJ-16-3B INTERNAL THREADS PER MIL-S-8879; 6 HOLES EQUALLY SPACED 0.250 IN. INSIDE DIA AROUND OUTSIDE IN; Overall Length: 2.110 INCHES NOMINAL IN; Surface Treatment: ANODIZE. 4 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 1620-00-475-9456 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.