PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BT-839 W/G-401Filter Element,fluid

Baldwin Filters · NSN 4330-00-420-7557 · FSC 4330 · No Item Name Available
Verified by PartsTable
NSN 4330-00-420-7557 — this item is cataloged by the U.S. Government under National Stock Number 4330-00-420-7557. Primary manufacturer part number: BT-839 W/G-401.
Features
  • Filter Element,fluid — FSC 4330
  • 7 verified cross-references
  • Primary manufacturer: Baldwin Filters
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
General Description

The Filter Element,fluid, cataloged under National Stock Number 4330-00-420-7557, is classified within Federal Supply Class 4330 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Baldwin Filters. This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameFilter Element,fluid
FSC / FSG4330 — No Item Name Available (FSG 43)
ManufacturersAutomotive Inc Fluid Power Systems Components Div Sub of United Technologies Corp (CAGE 07988); Baldwin Filters (CAGE 12658); Michigan Dynamics Inc (CAGE 05160); Gregory Engineering Corp (CAGE 31849); Rtc Parts Inc (CAGE 34995)
Technical Specifications
ParameterValue
NSN4330-00-420-7557
Primary Part NumberBT-839 W/G-401
Item NameFilter Element,fluid
FSC / FSG4330 / 43 — No Item Name Available
ManufacturerBaldwin Filters
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6625-00-034-6327 INTERCHANGEABLE
Board Assembly
1680-00-091-24041119-1 INTERCHANGEABLE
Bellows
Precision Metal Products, Inc
5120-00-116-2920S29 INTERCHANGEABLE
Die,crimping Tool
Souriau Usa, Inc. Dba Souriau Usa Inc
5940-00-156-7430115691-004 INTERCHANGEABLE
Terminal,lug
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
5330-00-297-452011191 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5305-00-333-9501S29 INTERCHANGEABLE
Screw,machine
Contraves Inc
4820-00-403-5641N11191 INTERCHANGEABLE
Disk,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
3040-00-404-3140SCC93333 INTERCHANGEABLE
Gearshaft,spur
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5950-00-460-08040300D0180 INTERCHANGEABLE
Reactor
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
5950-00-645-2349A7702 INTERCHANGEABLE
Transformer,power
Bae Systems Information and Electronic Systems Integration Inc.
Cross-Reference Index
Part NumberManufacturer
S29 Automotive Inc Fluid Power Systems Components Div Sub of United Technologies Corp (USA)
BT-839 W/G-401 PRIMARY Baldwin Filters (USA)
201026 Michigan Dynamics Inc (USA)
11191 Gregory Engineering Corp (USA)
S200-201026 Automotive Inc Fluid Power Systems Components Div Sub of United Technologies Corp (USA)
30189B2 Rtc Parts Inc (USA)
60106 Gregory Engineering Corp (USA)
Related Parts
6625-00-034-6327INTERCHANGEABLE
BOARD ASSEMBLY
1680-00-091-2404INTERCHANGEABLE
BELLOWS
1119-1
5120-00-116-2920INTERCHANGEABLE
DIE,CRIMPING TOOL
S29
5940-00-156-7430INTERCHANGEABLE
TERMINAL,LUG
115691-004
5330-00-297-4520INTERCHANGEABLE
SEAL,PLAIN ENCASED
11191
5305-00-333-9501INTERCHANGEABLE
SCREW,MACHINE
S29
4820-00-403-5641INTERCHANGEABLE
DISK,VALVE
N11191
3040-00-404-3140INTERCHANGEABLE
GEARSHAFT,SPUR
SCC93333
5950-00-460-0804INTERCHANGEABLE
REACTOR
0300D0180
5950-00-645-2349INTERCHANGEABLE
TRANSFORMER,POWER
A7702
1420-00-784-1421INTERCHANGEABLE
ADAPTER,CONVERTER H
201026
6105-00-813-9224INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
035463

Frequently Asked Questions

What is NSN 4330-00-420-7557?

NSN 4330-00-420-7557 is a Filter Element,fluid, manufactured by Baldwin Filters, classified under FSC 4330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4330-00-420-7557?

NSN 4330-00-420-7557 has 7 cross-referenced part numbers: S29 (Automotive Inc Fluid Power Systems Components Div Sub of United Technologies Corp), BT-839 W/G-401 (Baldwin Filters), 201026 (Michigan Dynamics Inc), 11191 (Gregory Engineering Corp), S200-201026 (Automotive Inc Fluid Power Systems Components Div Sub of United Technologies Corp) and 2 more.

What NSN replaces 4330-00-420-7557?

There are 12 known substitutes for 4330-00-420-7557: 6625-00-034-6327, 1680-00-091-2404, 5120-00-116-2920 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 4330-00-420-7557 still in active supply?

NSN 4330-00-420-7557 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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