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PartsTable / COMPONENT / H728-4401-37
H728-4401-37 ✓ 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 H728-4401-37 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 6685-01-501-0899, 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
H728-4401-37
NSN: 6685-01-501-0899
FSC: 6685
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
Part NumberH728-4401-37
NSN6685-01-501-0899
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available H728-4401-37 TITLE COMPONENT PN H728-4401-37 MFR H728-4401-37
KEY FEATURES
•
MATERIAL: NICKEL ALLOY
•
REMOVABLE PISTON: NOT PROVIDED
•
FLUID TYPE FOR WHICH DESIGNED: LIQUID
•
THREADED DIRECT PRESSURE CONNECTION: PROVIDED
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALNICKEL ALLOY
OVERALL WIDTH2.000 INCHES NOMINAL IN
REMOVABLE PISTONNOT PROVIDED
SPECIAL FEATURESINLET CONN 7/16-20 UNF-2A EXTERNAL THREAD; OUTLET CONN 7/16-20 UNF-2B INTERNAL THREAD A
FLUID TYPE FOR WHICH DESIGNEDLIQUID
THREADED DIRECT PRESSURE CONNECTIONPROVIDED
OVERALL LENGTH4.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
H728-4401-RRT-220Interchangeable
interchangeable cross-reference
interchangeable
531-7015135Interchangeable
interchangeable cross-reference
interchangeable
MIL-T-19646Interchangeable
interchangeable cross-reference
interchangeable
531-7015135-GA-109Interchangeable
interchangeable cross-reference
interchangeable
H728-4401Interchangeable
interchangeable cross-reference
interchangeable
19-07-3030EInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H728-4401-37?
H728-4401-37 is a H728-4401-37.
What parts can replace H728-4401-37?
There are 23 known substitutes for H728-4401-37: H728-4401-RRT-220, 531-7015135, MIL-T-19646 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for H728-4401-37?
H728-4401-37 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-01-501-0899. 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