The Head,piston, cataloged under National Stock Number 1620-01-245-8552, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is The Boeing Company Div Defense. 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through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-01-245-8552 |
| Primary Part Number | 74A410853-2003 |
| Item Name | Head,piston |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL PER AMS 5629; 4.430 IN. DIA; 1.295 IN. THK IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 74A410853-2003 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A410853-2003 | Safran Landing Systems Canada Inc. (CAN) |
| 74A410853-2003 | Blair Industries Inc (USA) |
| 74A410853-2003 | Nassau Tool Works, Inc (USA) |
| 74A410853-2003 | Cm Manufacturing Inc Dba Cm Manufacturing Inc (USA) |
| Reference | Meaning |
|---|---|
| 10153774 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A410853-2003 | 5/9 Secondary reference Circor Aerospace, Inc. Dba Circor Aerospace Machining Center |
| 74A410853-2003 | C/1 Advisory reference — outside the item-of-supply concept Circor Aerospace, Inc. Div Circor |
| 74A410853-2003 | 5/9 Secondary reference All Tools, Inc. Dba E2 Precision Products |
| 74A410853-2003 | 5/9 Secondary reference Heroux-Devtek Inc |
| 74A410853-2003 | 5/2 Secondary reference U.S. Government activity |
| 74A410853-2003 | C/1 Advisory reference — outside the item-of-supply concept Israel Aerospace Industries Ltd.shl-Aero Assemblies Division |
| 74A410853-2003 | 5/9 Secondary reference Goodrich Corp Dba Goodrich Corp |
| 74A410853-2003 | 5/9 Secondary reference Israel Aerospace Industries Ltd. Shl - Aero Assemblies Division |
| 74A410853-2003 | 5/1 Secondary reference Goodrich Corporation |
NSN 1620-01-245-8552 is a Head,piston, manufactured by The Boeing Company Div Defense, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-01-245-8552 has 5 manufacturer part numbers on file: 74A410853-2003 (The Boeing Company Div Defense), 74A410853-2003 (Safran Landing Systems Canada Inc.), 74A410853-2003 (Blair Industries Inc), 74A410853-2003 (Nassau Tool Works, Inc), 74A410853-2003 (Cm Manufacturing Inc Dba Cm Manufacturing Inc).
Key specifications for 74A410853-2003: General Characteristics Item Description: STEEL PER AMS 5629; 4.430 IN. DIA; 1.295 IN. THK IN; End Item Identification: AIRCRAFT MODEL F-18. 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 1620-01-245-8552 has DEMIL Code D. 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.