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Technical Data Sheet
PartsTable / COMPONENT / 4-0EXT3-4
4-0EXT3-4 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The EXTENSION,JUNCTION BOX is a the manufacturer industrial component. Key specifications include material: STEEL BODY, inside_depth: 1.500 INCHES NOMINAL IN, style_designator: OCTAGONAL, surface_treatment: CADMIUM OR ZINC OVERALL, distance_across_flats: 4.000 INCHES NOMINAL IN, cover_attachment_method: SCREW. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5975-00-194-8847, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
4-0EXT3-4
NSN: 5975-00-194-8847
FSC: 5975
CAGE: 90759 — NI INDUSTRIES INC BOWERS MFG CO DIV (USA)
SPECIFICATIONS
materialSTEEL BODY
inside_depth1.500 INCHES NOMINAL IN
style_designatorOCTAGONAL
entrance_quantity4
surface_treatmentCADMIUM OR ZINC OVERALL
distance_across_flats4.000 INCHES NOMINAL IN
cover_attachment_methodSCREW
nondefinitive_spec/std_dataN SIZE AND 37 STYLE AND V TYPE
NSN5975-00-194-8847
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available EXTENSION,JUNCTION BOX TITLE COMPONENT PN 4-0EXT3-4 MFR EXTENSION,JUNCTION BOX
KEY FEATURES
•
INSIDE DEPTH: 1.500 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
STYLE DESIGNATOR: OCTAGONAL
•
NONDEFINITIVE SPEC/STD DATA: N SIZE AND 37 STYLE AND V TYPE
•
MATERIAL: STEEL BODY
•
ENTRANCE QUANTITY: 4
•
COVER ATTACHMENT METHOD: SCREW
•
DISTANCE ACROSS FLATS: 4.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE DEPTH1.500 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
STYLE DESIGNATOROCTAGONAL
NONDEFINITIVE SPEC/STD DATAN SIZE AND 37 STYLE AND V TYPE
MATERIALSTEEL BODY
ENTRANCE QUANTITY4
COVER ATTACHMENT METHODSCREW
DISTANCE ACROSS FLATS4.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
AA59214-4A4Interchangeable
interchangeable cross-reference
interchangeable
FED-STD-128Interchangeable
interchangeable cross-reference
interchangeable
A-A-59214Interchangeable
interchangeable cross-reference
interchangeable
24151 1-2Interchangeable
interchangeable cross-reference
interchangeable
2900Interchangeable
interchangeable cross-reference
interchangeable
SP54171 1-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4-0EXT3-4?
4-0EXT3-4 is a EXTENSION,JUNCTION BOX.
What parts can replace 4-0EXT3-4?
There are 32 known substitutes for 4-0EXT3-4: AA59214-4A4, FED-STD-128, A-A-59214 and 29 more. Substitute compatibility should be verified for your specific system.
Is 4-0EXT3-4 still available?
4-0EXT3-4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026