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Technical Data Sheet
PartsTable / MRO / 3550003-003
3550003-003 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include thread_class: 2B, thread_length: 0.175 INCHES NOMINAL IN, thread_series: UNEF, overall_height: 0.239 INCHES NOMINAL IN, sealing_method: COMPRESSION AND PACKING, mounting_method: THREAD. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-491-8714, 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
MRO→ MRO_GENERAL→ 3550003-003
NSN: 5930-00-491-8714
FSC: 5930
CAGE: 92755 — NORTHROP GRUMMAN SYSTEMS CORP DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
thread_class2B
thread_length0.175 INCHES NOMINAL IN
thread_seriesUNEF
overall_height0.239 INCHES NOMINAL IN
sealing_methodCOMPRESSION AND PACKING
mounting_methodTHREAD
style_designatorTHRU-HOLE
material_thickness0.005 INCHES NOMINAL IN
width_across_flats0.500 INCHES NOMINAL IN
nominal_thread_size0.375 INCHES IN
base_thread_locationINTERNAL
fsc_application_dataSWITCH,ROTARY
NSN5930-00-491-8714
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BOOT,DUST AND MOISTURE SEAL TITLE COMPONENT PN 3550003-003 MFR BOOT,DUST AND MOISTURE
KEY FEATURES
•
MOUNTING METHOD: THREAD
•
MOUNTING DEVICE QUANTITY: 1
•
STYLE DESIGNATOR: THRU-HOLE
•
SEALING METHOD: COMPRESSION AND PACKING
•
MATERIAL THICKNESS: 0.005 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
WIDTH ACROSS FLATS: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING METHODTHREAD
MOUNTING DEVICE QUANTITY1
STYLE DESIGNATORTHRU-HOLE
SEALING METHODCOMPRESSION AND PACKING
MATERIAL THICKNESS0.005 INCHES NOMINAL IN
OVERALL HEIGHT0.239 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.375 INCHES IN
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
BASE THREAD LOCATIONINTERNAL
THREAD SERIESUNEF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
M5423/09-09Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-5423/9Interchangeable
interchangeable cross-reference
interchangeable
MILB5423-9Interchangeable
interchangeable cross-reference
interchangeable
M5423/09-11Interchangeable
interchangeable cross-reference
interchangeable
30151Interchangeable
interchangeable cross-reference
interchangeable
02017-8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3550003-003?
3550003-003 is a BOOT,DUST AND MOISTURE SEAL. It is classified as a MRO (MRO_GENERAL).
What parts can replace 3550003-003?
There are 30 known substitutes for 3550003-003: M5423/09-09, MIL-DTL-5423/9, MILB5423-9 and 27 more. Substitute compatibility should be verified for your specific system.
Is 3550003-003 still available?
3550003-003 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026