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PartsTable / COMPONENT / H728-4401
H728-4401 ✓ 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 H728-4401 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-01-481-2073, 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
H728-4401
NSN: 6685-01-481-2073
FSC: 6685
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
Part NumberH728-4401
NSN6685-01-481-2073
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available H728-4401 TITLE COMPONENT PN H728-4401 MFR H728-4401
KEY FEATURES
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BULB STYLE: PLAIN BULB W/BENDABLE EXTENSION
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SCALE TYPE: DIAL
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BULB TYPE: FLEXIBLE CAPILLARY
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BULB OVERALL LENGTH: 181.500 INCHES NOMINAL IN
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STYLE DESIGNATOR: BULB W/O SOCKET
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DIAL DIAMETER: 3.500 INCHES NOMINAL IN
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BULB CONNECTION TYPE: UNION
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EXTENSION NECK LENGTH: 180.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
BULB STYLEPLAIN BULB W/BENDABLE EXTENSION
SCALE TYPEDIAL
BULB TYPEFLEXIBLE CAPILLARY
BULB OVERALL LENGTH181.500 INCHES NOMINAL IN
STYLE DESIGNATORBULB W/O SOCKET
DIAL DIAMETER3.500 INCHES NOMINAL IN
BULB CONNECTION TYPEUNION
EXTENSION NECK LENGTH180.000 INCHES NOMINAL IN
CASE DIAMETER4.000 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
M27-400Interchangeable
interchangeable cross-reference
interchangeable
81GNN00RW75YInterchangeable
interchangeable cross-reference
interchangeable
81GN-N00U-W40YInterchangeable
interchangeable cross-reference
interchangeable
MIL-T-19646Interchangeable
interchangeable cross-reference
interchangeable
81GK-Y00R-W25YInterchangeable
interchangeable cross-reference
interchangeable
41GH-Y00U-A10YInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H728-4401?
H728-4401 is a H728-4401.
What parts can replace H728-4401?
There are 21 known substitutes for H728-4401: M27-400, 81GNN00RW75Y, 81GN-N00U-W40Y and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for H728-4401?
H728-4401 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-01-481-2073. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026