PartsTable
Technical Data Sheet
638-20528 ✓ 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 638-20528 is a the manufacturer industrial component. Key specifications include movement_type: MOVING COIL, PERMANENT MAGNET, indicator_type: DIAL W/POINTER, overall_length: 2.000 INCHES NOMINAL IN, overall_diameter: 3.500 INCHES NOMINAL IN, special_features: RUGGEDIZED, style_designator: ROUND FLUSH MTG. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-01-181-4103, 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 638-20528
NSN: 6625-01-181-4103
FSC: 6625
CAGE: 77221 — PHAOSTRON INSTRUMENT AND ELECTRONIC COMPANY (USA)
SPECIFICATIONS
movement_typeMOVING COIL, PERMANENT MAGNET
indicator_typeDIAL W/POINTER
overall_length2.000 INCHES NOMINAL IN
overall_diameter3.500 INCHES NOMINAL IN
special_featuresRUGGEDIZED
style_designatorROUND FLUSH MTG
features_providedZERO ADJUSTER
installation_designPANEL
mounting_hole_diameter0.143 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
environmental_protectionSHOCK RESISTANT AND VIBRATION RESISTANT
panel_for_which_designedNONMAGNETIC
mounting_arrangement_styleTHREE HOLE/STUD BOLT CIRCLE
NSN6625-01-181-4103
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available 638-20528 TITLE COMPONENT PN 638-20528 MFR 638-20528
KEY FEATURES
MOUNTING ARRANGEMENT STYLE: THREE HOLE/STUD BOLT CIRCLE
OVERALL DIAMETER: 3.500 INCHES NOMINAL IN
INSTALLATION DESIGN: PANEL
METER BODY DIAMETER BEHIND MOUNTING FLANGE: 2.670 INCHES NOMINAL IN
METER DEPTH BEHIND MOUNTING FLANGE: 1.200 INCHES MAXIMUM IN
STYLE DESIGNATOR: ROUND FLUSH MTG
ENVIRONMENTAL PROTECTION: SHOCK RESISTANT AND VIBRATION RESISTANT
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING ARRANGEMENT STYLETHREE HOLE/STUD BOLT CIRCLE
OVERALL DIAMETER3.500 INCHES NOMINAL IN
INSTALLATION DESIGNPANEL
METER BODY DIAMETER BEHIND MOUNTING FLANGE2.670 INCHES NOMINAL IN
METER DEPTH BEHIND MOUNTING FLANGE1.200 INCHES MAXIMUM IN
STYLE DESIGNATORROUND FLUSH MTG
OVERALL LENGTH2.000 INCHES NOMINAL IN
ENVIRONMENTAL PROTECTIONSHOCK RESISTANT AND VIBRATION RESISTANT
FEATURES PROVIDEDZERO ADJUSTER
INDICATOR TYPEDIAL W/POINTER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
M3154Interchangeable
interchangeable cross-reference
interchangeable
00781568104217Interchangeable
interchangeable cross-reference
interchangeable
135192Interchangeable
interchangeable cross-reference
interchangeable
NU4-2Interchangeable
interchangeable cross-reference
interchangeable
631-SPECIALInterchangeable
interchangeable cross-reference
interchangeable
135192-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 638-20528?
638-20528 is a 638-20528. It is classified as a MRO (MRO_GENERAL).
What parts can replace 638-20528?
There are 9 known substitutes for 638-20528: M3154, 00781568104217, 135192 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 638-20528?
638-20528 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-01-181-4103. This indicates validated use in U.S. government and defense supply chains.
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