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PartsTable / COMPONENT / 28681
28681 ✓ Verified by PartsTable
Hama · 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

RESISTOR,VARIABLE,WIRE WOUND,PRE. Key specifications include end_item_identification: 4120-01-552-5223;9K ENVIRONMENTAL CONTROL UNIT, part_name_assigned_by_controlling_agency: MOUNTING PLATE,COMPRESSOR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-605-2770, 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
28681
NSN: 4320-00-605-2770
FSC: 4320
CAGE: 92878 — HDT EXPEDITIONARY SYSTEMS INC (USA)
SPECIFICATIONS
end_item_identification4120-01-552-5223;9K ENVIRONMENTAL CONTROL UNIT
part_name_assigned_by_controlling_agencyMOUNTING PLATE,COMPRESSOR
NSN4320-00-605-2770
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Hama RESISTOR,VARIABLE,WIRE WOUND,PRE TITLE COMPONENT PN 28681 MFR Hama RESISTOR,VARIABLE,WIRE
KEY FEATURES
•
SIZE DESIGNATOR: 0.250-20NC
•
BLADE TYPE: STRAIGHT
•
ROTATION DIRECTION FOR WHICH DESIGNED: CLOCKWISE
•
MOUNTING METHOD: SETSCREW
•
HUB LENGTH: 1.375 INCHES NOMINAL IN
•
BLADE QUANTITY: 23
•
HUB BORE DIAMETER: 1.376 INCHES MINIMUM AND 1.377 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SIZE DESIGNATOR0.250-20NC
BLADE TYPESTRAIGHT
OVERALL WIDTH1.625 INCHES NOMINAL IN
ROTATION DIRECTION FOR WHICH DESIGNEDCLOCKWISE
MOUNTING METHODSETSCREW
HUB LENGTH1.375 INCHES NOMINAL IN
BLADE QUANTITY23
HUB BORE DIAMETER1.376 INCHES MINIMUM AND 1.377 INCHES MAXIMUM IN
MATERIALALUMINUM
DESIGN TYPESINGLE WIDTH
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
28681Interchangeable
interchangeable cross-reference
interchangeable
20237Interchangeable
interchangeable cross-reference
interchangeable
20235Interchangeable
interchangeable cross-reference
interchangeable
32-31465 ITEM 16Interchangeable
interchangeable cross-reference
interchangeable
5305PL0783063Interchangeable
interchangeable cross-reference
interchangeable
6109D51-12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 28681?
28681 is a RESISTOR,VARIABLE,WIRE WOUND,PRE manufactured by Hama.
What parts can replace 28681?
There are 7 known substitutes for 28681: 28681, 20237, 20235 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 28681?
28681 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-605-2770. 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