The Ring,tie Down, cataloged under National Stock Number 1620-00-397-0555, 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 1 specification, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 1620-00-397-0555 |
| Primary Part Number | 164250 |
| Item Name | Ring,tie Down |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Goodrich Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | INSIDE RING DIA 2.000 IN.; 2 PARALLEL FLANGES 1.250 IN. APART; 2 0.4365 TO 0.4380 IN. DIA HOLES IN-LINE ON FLANGES 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 |
|---|---|
| 164250 PRIMARY | Goodrich Corporation (USA) |
| 20-41187-3 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 164250 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
| 164250 | 5/9 Secondary reference Goodrich Corp Dba Goodrich Corp |
| 164250 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
NSN 1620-00-397-0555 is a Ring,tie Down, manufactured by Goodrich Corporation, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-00-397-0555 has 2 manufacturer part numbers on file: 164250 (Goodrich Corporation), 20-41187-3 (The Boeing Company Div Defense).
Key specifications for 164250: General Characteristics Item Description: INSIDE RING DIA 2.000 IN.; 2 PARALLEL FLANGES 1.250 IN. APART; 2 0.4365 TO 0.4380 IN. DIA HOLES IN-LINE ON FLANGES IN. 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 1620-00-397-0555 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.