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PartsTable / COMPONENT / 5505 MARK III
5505 MARK III ✓ 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

DEHYDRATOR UNIT,NONREACTIVATING. Key specifications include height: 1.250 INCHES NOMINAL IN, diameter: 0.813 INCHES NOMINAL IN, material: CERAMIC CASE, tube_type: TRIODE, body_style: EDISON BASE, body_length: 0.281 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4440-01-307-6546, 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
5505 MARK III
NSN: 4440-01-307-6546
FSC: 4440
CAGE: 22501 — HOWELL LABORATORIES INC DBA HOWELL LABORATORIES INC (USA)
SPECIFICATIONS
height1.250 INCHES NOMINAL IN
diameter0.813 INCHES NOMINAL IN
materialCERAMIC CASE
tube_typeTRIODE
body_styleEDISON BASE
body_length0.281 INCHES NOMINAL IN
element_typeDYNAMIC
thread_class2A A
bushing_shapeROUND
overall_width0.572 INCHES NOMINAL IN
terminal_typeTAB, SOLDER LUG
bushing_length0.141 INCHES NOMINAL IN
NSN4440-01-307-6546
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available DEHYDRATOR UNIT,NONREACTIVATING TITLE COMPONENT PN 5505 MARK III MFR DEHYDRATOR UNIT,NONREA
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
5703Interchangeable
interchangeable cross-reference
interchangeable
4643BInterchangeable
interchangeable cross-reference
interchangeable
JMC5703Interchangeable
interchangeable cross-reference
interchangeable
2028Interchangeable
interchangeable cross-reference
interchangeable
V5703Interchangeable
interchangeable cross-reference
interchangeable
8109351Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5505 MARK III?
5505 MARK III is a DEHYDRATOR UNIT,NONREACTIVATING.
What parts can replace 5505 MARK III?
There are 17 known substitutes for 5505 MARK III: 5703, 4643B, JMC5703 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5505 MARK III?
5505 MARK III is cataloged in the Federal Logistics Information System (FLIS) under NSN 4440-01-307-6546. 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