PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FL4Maintenance Kit,aircraft

Dla Aviation Engineering Div Department of Defense · NSN 4920-01-584-2451 · FSC 4920 · No Item Name Available
Verified by PartsTable
NSN 4920-01-584-2451 — this item is cataloged by the U.S. Government under National Stock Number 4920-01-584-2451. Primary manufacturer part number: FL4.
Features
  • Maintenance Kit,aircraft — FSC 4920
  • Component Quantity: 3
  • Supply Items and Quantities: 5331-00-166-1062 O-RING 1; 5331-00-166-1072 O-RING 1; 5331-00-167-5128 O-RING 1
  • 1 verified cross-reference
  • Primary manufacturer: Dla Aviation Engineering Div Department of Defense
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Maintenance Kit,aircraft, cataloged under National Stock Number 4920-01-584-2451, is classified within Federal Supply Class 4920 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Dla Aviation Engineering Div Department of Defense. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4920-01-584-2451
Primary Part NumberFL4
Item NameMaintenance Kit,aircraft
FSC / FSG4920 / 49 — No Item Name Available
ManufacturerDla Aviation Engineering Div Department of Defense
StatusACTIVE
Component Quantity3
Supply Items and Quantities5331-00-166-1062 O-RING 1; 5331-00-166-1072 O-RING 1; 5331-00-167-5128 O-RING 1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5930-00-950-6591 INTERCHANGEABLE
Switch,thermostatic
2940-00-973-969051190 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
9140-01-107-6139 INTERCHANGEABLE
Fuel Oil,burner
4730-01-478-3768FL-4 INTERCHANGEABLE
Strainer Element,sediment
Chemfree Corporation
5910-01-604-7114FL4 INTERCHANGEABLE
Capacitor,special
Us Tech Inc Dba Us Tech Inc
5340-01-682-8281FL-4 INTERCHANGEABLE
Stay,locking
Vestil Manufacturing Corp
Cross-Reference Index
Part NumberManufacturer
FL4 PRIMARY Dla Aviation Engineering Div Department of Defense (USA)
Related Parts
5930-00-950-6591INTERCHANGEABLE
SWITCH,THERMOSTATIC
2940-00-973-9690INTERCHANGEABLE
FILTER ELEMENT,FLUID
51190
9140-01-107-6139INTERCHANGEABLE
FUEL OIL,BURNER
4730-01-478-3768INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
FL-4
5910-01-604-7114INTERCHANGEABLE
CAPACITOR,SPECIAL
FL4
5340-01-682-8281INTERCHANGEABLE
STAY,LOCKING
FL-4

Frequently Asked Questions

What is NSN 4920-01-584-2451?

NSN 4920-01-584-2451 is a Maintenance Kit,aircraft, manufactured by Dla Aviation Engineering Div Department of Defense, classified under FSC 4920 (No Item Name Available). Status: active.

What are the part numbers for NSN 4920-01-584-2451?

NSN 4920-01-584-2451 has 1 cross-referenced part number: FL4 (Dla Aviation Engineering Div Department of Defense).

What NSN replaces 4920-01-584-2451?

There are 6 known substitutes for 4920-01-584-2451: 5930-00-950-6591, 2940-00-973-9690, 9140-01-107-6139 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FL4?

Key specifications for FL4: Special Features: FL-4 KIT - NHA HOME STATION CHECKS AND HIGH MAINTENANCE DRIVERS; Component Quantity: 3; Part Name Assigned by Controlling Agency: REPAIR KIT, FL-4; End Item Identification: B-1. 5 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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