The Collar,lower Torque, cataloged under National Stock Number 1620-00-932-2363, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-00-932-2363 |
| Primary Part Number | 3-41603-1 |
| Item Name | Collar,lower Torque |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| FSC Application Data | NOSE LANDING GEAR |
| General Characteristics Item Description | STEEL,MIL-S-5626,COMP 4140; 2.253 IN. INSIDE DIA; 1.670 IN. THICK; .250-28 UNF-2B IN. HOLE,1; .375 IN. DIA HOLE,1; .502 IN. DIA HOLE,1 IN |
| 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 |
|---|---|
| 3-41603-1 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| Reference | Meaning |
|---|---|
| 3-41603-1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
NSN 1620-00-932-2363 is a Collar,lower Torque, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-00-932-2363 has 1 manufacturer part number on file: 3-41603-1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems).
1 possible match (shared part number, not a government interchangeability claim): 4330-01-185-8334. Verify interchangeability with system specifications before substitution.
Key specifications for 3-41603-1: FSC Application Data: NOSE LANDING GEAR; General Characteristics Item Description: STEEL,MIL-S-5626,COMP 4140; 2.253 IN. INSIDE DIA; 1.670 IN. THICK; .250-28 UNF-2B IN. HOLE,1; .375 IN. DIA HOLE,1; .502 IN. DIA HOLE,1 IN; End Item Identification: T-38A AIRCRAFT A. 2 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 1620-00-932-2363 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.