The Nut,axle,main Landing Gear, cataloged under National Stock Number 1620-01-176-5210, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Circor Aerospace, Inc. Div Circor. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1620-01-176-5210 |
| Primary Part Number | 1881-375 |
| Item Name | Nut,axle,main Landing Gear |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Circor Aerospace, Inc. Div Circor |
| Status | ACTIVE |
| General Characteristics Item Description | 4.625 IN. LG;4 HOLES EVENLY SPACED;3.625-12 UNJ-3A THD PER MIL-S-8879 A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1881-375 | Machine Specialties, Llc (USA) |
| 1881-375 PRIMARY | Circor Aerospace, Inc. Div Circor (USA) |
| 1881-375 | Es3 Prime Logistics Group Inc Dba Es3 Plg (USA) |
| 1881-375 | Goodrich Corporation (USA) |
| 1881-375 | Es3 Prime Logistics Group, Inc. Dba Es3 Plg (USA) |
| 1881-375 | Apex Manufacturing Company, Inc. Dba Apex Manufacturing Co (USA) |
| 1881-375 PRIMARY | Aero Apmc Inc (USA) |
| 1881-375 PRIMARY | Cm Manufacturing Inc Dba Cm Manufacturing Inc (USA) |
| 1881-375 | Heroux-Devtek Inc (CAN) |
| Reference | Meaning |
|---|---|
| 1881-375 | 5/9 Secondary reference All Tools, Inc. Dba E2 Precision Products |
| 1881-375 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 1881-375 | 5/2 Secondary reference U.S. Government activity |
NSN 1620-01-176-5210 is a Nut,axle,main Landing Gear, manufactured by Circor Aerospace, Inc. Div Circor, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-01-176-5210 has 9 manufacturer part numbers on file: 1881-375 (Machine Specialties, Llc), 1881-375 (Circor Aerospace, Inc. Div Circor), 1881-375 (Es3 Prime Logistics Group Inc Dba Es3 Plg), 1881-375 (Goodrich Corporation), 1881-375 (Es3 Prime Logistics Group, Inc. Dba Es3 Plg) and 4 more.
Key specifications for 1881-375: General Characteristics Item Description: 4.625 IN. LG;4 HOLES EVENLY SPACED;3.625-12 UNJ-3A THD PER MIL-S-8879 A; End Item Identification: AIRCRAFT B1B. 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.
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.