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28504A ✓ 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 MUFFLER,EXHAUST is a the manufacturer industrial component. Key specifications include material: ALUMINUM BODY, body_width: 1.687 INCHES MINIMUM AND 1.812 INCHES MAXIMUM IN, drive_type: HYDRAULIC, body_height: 2.250 INCHES MINIMUM AND 2.437 INCHES MAXIMUM IN, body_length: 2.250 INCHES MINIMUM AND 2.437 INCHES MAXIMUM IN, inclosure_type: HERMETICALLY SEALED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2990-01-564-2857, 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
28504A
NSN: 2990-01-564-2857
FSC: 2990
CAGE: 5L200 — NELSON INDUSTRIES INC NELSON MUFFLER DIV (USA)
SPECIFICATIONS
materialALUMINUM BODY
body_width1.687 INCHES MINIMUM AND 1.812 INCHES MAXIMUM IN
drive_typeHYDRAULIC
body_height2.250 INCHES MINIMUM AND 2.437 INCHES MAXIMUM IN
body_length2.250 INCHES MINIMUM AND 2.437 INCHES MAXIMUM IN
feed_quantity1
inclosure_typeHERMETICALLY SEALED
overall_height12.500 INCHES NOMINAL IN
overall_length15.000 INCHES NOMINAL IN
reservoir_typeSINGLE
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating1.0 KILOHERTZ NOMINAL SINGLE COMPONENT
NSN2990-01-564-2857
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MUFFLER,EXHAUST TITLE COMPONENT PN 28504A MFR MUFFLER,EXHAUST
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
44709Interchangeable
interchangeable cross-reference
interchangeable
PD22SEPT58Interchangeable
interchangeable cross-reference
interchangeable
MILL6617TYPEB2Interchangeable
interchangeable cross-reference
interchangeable
3330-189Interchangeable
interchangeable cross-reference
interchangeable
3330-012Interchangeable
interchangeable cross-reference
interchangeable
7695K5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 28504A?
28504A is a MUFFLER,EXHAUST.
What parts can replace 28504A?
There are 7 known substitutes for 28504A: 44709, PD22SEPT58, MILL6617TYPEB2 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 28504A?
28504A is cataloged in the Federal Logistics Information System (FLIS) under NSN 2990-01-564-2857. 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