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Technical Data Sheet

644U — Technical Data Sheet

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AMETEK, INC. DIV AEROSPACE & DEFENSE · COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

GAGE,COMPOUND PRESSURE-VACUUM,DI. Key specifications include MATERIAL: COPPER ALLOY 511 ACTUATING ELEMENT, DIAL SIZE: 2 IN. DIA IN, BEZEL TYPE: SNAP-ON, SCALE NAME: PRESSURE-VACUUM, SCALE TYPE: MULTIPLE, SCALE RANGE: +0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 15.0 POUNDS PRESSURE PER SQUARE INCH LBS.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-00-228-3781, 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
644U
NSN: 6685-00-228-3781
FSC: 6685
CAGE: 61349 — AMETEK, INC. DIV AEROSPACE & DEFENSE (USA)
SPECIFICATIONS
MATERIALCOPPER ALLOY 511 ACTUATING ELEMENT
DIAL SIZE2 IN. DIA IN
BEZEL TYPESNAP-ON
SCALE NAMEPRESSURE-VACUUM
SCALE TYPEMULTIPLE
SCALE RANGE+0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 15.0 POUNDS PRESSURE PER SQUARE INCH LBS
POINTER TYPEINDICATING
ADJUSTABILITYNONADJUSTABLE
OVERALL DEPTH1.220 INCHES NOMINAL IN
POINTER COLORBLACK
STUD LOCATIONBACK
STUD QUANTITY2
NSN6685-00-228-3781
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: AMETEK, INC. DIV AEROSPACE & DEFENSE GAGE,COMPOUND PRESSURE-VACUUM,DI TITLE COMPONENT PN 644U MFR AMETEK, INC. DIV AEROSPACE & DEFENSE GAGE,COMPOUND PRESSURE
KEY FEATURES
SCALE SMALLEST INCREMENT: 1.0 INCHES AND 1.0 POUNDS PER SQUARE INCH (PSI) LBS
CONNECTION LOCATION: BACK, CENTER
SCALE INSCRIPTION/BACKGROUND COLOR: BLACK FIGURES ON WHITE BACKGROUND
MATERIAL: STEEL CASE
SCALE RANGE: +0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 15.0 POUNDS PRESSURE PER SQUARE INCH LBS
POINTER TYPE: INDICATING
STUD LOCATION: BACK
TECHNICAL CHARACTERISTICS (FLIS)
SCALE SMALLEST INCREMENT1.0 INCHES AND 1.0 POUNDS PER SQUARE INCH (PSI) LBS
CONNECTION LOCATIONBACK, CENTER
SCALE INSCRIPTION/BACKGROUND COLORBLACK FIGURES ON WHITE BACKGROUND
MATERIALSTEEL CASE
SCALE RANGE+0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 15.0 POUNDS PRESSURE PER SQUARE INCH LBS
MATERIALGLASS PROTECTIVE CRYSTAL
POINTER TYPEINDICATING
STUD LOCATIONBACK
MATERIALCOPPER ALLOY 511 ACTUATING ELEMENT
CONNECTOR TYPE VENTNOT PROVIDED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
25-1001XUC-01B-150PSI30VACInterchangeable
interchangeable cross-reference
interchangeable
2 1-2 3DFM1-8CBM30X150Interchangeable
interchangeable cross-reference
interchangeable
C844UInterchangeable
interchangeable cross-reference
interchangeable
143399Interchangeable
interchangeable cross-reference
interchangeable
137114Interchangeable
interchangeable cross-reference
interchangeable
10024REVAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 644U?
644U is a GAGE,COMPOUND PRESSURE-VACUUM,DI manufactured by AMETEK, INC. DIV AEROSPACE & DEFENSE.
What parts can replace 644U?
There are 11 known substitutes for 644U: 25-1001XUC-01B-150PSI30VAC, 2 1-2 3DFM1-8CBM30X150, C844U and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 644U?
644U is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-00-228-3781. This indicates validated use in U.S. government and defense supply chains.
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