NSN 1620-00-073-7553 · NIIN 000737553 · Part number 53-41411-3
The Boeing Company Div Defense · FSC 1620 — Aircraft Landing Gear Components · FSG 16 — Aircraft Components and Accessories · CAGE 76301
Government record, cited
NSN 1620-00-073-7553 — this item is cataloged by the U.S. Government under National Stock Number 1620-00-073-7553. Manufacturer of record part number: 53-41411-3.
General Characteristics Item Description: STEEL AMS 6415 OR CLASS L STEEL PER BENDIX CR0370;4.420 IN.DIA;4.754 IN.MIN 4.764 IN.MAX LG IN
1 manufacturer part number on file
Manufacturer of record: The Boeing Company Div Defense
Identification
NSN: 1620-00-073-7553
NIIN: 000737553
FSC: 1620 — Aircraft Landing Gear Components
FSG: 16 — Aircraft Components and Accessories
Primary part number: 53-41411-3
Manufacturer: The Boeing Company Div Defense
General Description
The Fitting,downlock, cataloged under National Stock Number 1620-00-073-7553, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1620-00-073-7553
Primary Part Number
53-41411-3
Item Name
Fitting,downlock
FSC / FSG
1620 / 16 — Aircraft Landing Gear Components
Manufacturer
The Boeing Company Div Defense
Status
ACTIVE
General Characteristics Item Description
STEEL AMS 6415 OR CLASS L STEEL PER BENDIX CR0370;4.420 IN.DIA;4.754 IN.MIN 4.764 IN.MAX LG IN
Other items in FSC 1620 — Aircraft Landing Gear Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1620-00-491-0877
STRIKER,MICRO SWITCH
1620-00-491-0877
STRIKER,MICRO SWITCH
1620-00-699-0282
PISTON,CRANK AND LI
1620-00-718-6770
PISTON,FLOATING
1620-00-718-6770
PISTON,FLOATING
1620-00-736-1020
ROD,LATCH,SHORTENIN
1620-00-736-1020
ROD,LATCH,SHORTENIN
1620-00-756-9181
FITTING,STACK,TUBE
Frequently Asked Questions
What is NSN 1620-00-073-7553?
NSN 1620-00-073-7553 is a Fitting,downlock, manufactured by The Boeing Company Div Defense, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
What part numbers are listed for NSN 1620-00-073-7553?
NSN 1620-00-073-7553 has 1 manufacturer part number on file: 53-41411-3 (The Boeing Company Div Defense).
What are the specifications of 53-41411-3?
Key specifications for 53-41411-3: General Characteristics Item Description: STEEL AMS 6415 OR CLASS L STEEL PER BENDIX CR0370;4.420 IN.DIA;4.754 IN.MIN 4.764 IN.MAX LG IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 1620-00-073-7553 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.