PartsTable
Technical Data Sheet
PartsTable / COMPONENT / P644U
P644U ✓ 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 P644U is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-00-515-5385, 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
P644U
NSN: 6685-00-515-5385
FSC: 6685
CAGE: 61349 — AMETEK, INC. DIV AEROSPACE & DEFENSE (USA)
SPECIFICATIONS
Part NumberP644U
NSN6685-00-515-5385
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available P644U TITLE COMPONENT PN P644U MFR P644U
KEY FEATURES
•
MATERIAL: BRASS CASE
•
COLOR: BLACK CASE
•
OVERALL DIAMETER: 2.810 INCHES NOMINAL IN
•
SURFACE TREATMENT: ENAMEL CASE
•
FSC APPLICATION DATA: GAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE
•
CONNECTION SIZE: 0.438 IN. NPT DIA IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALBRASS CASE
COLORBLACK CASE
MATERIALBRONZE ACTUATING ELEMENT
OVERALL DIAMETER2.810 INCHES NOMINAL IN
SURFACE TREATMENTENAMEL CASE
FSC APPLICATION DATAGAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE
OVERALL DEPTH1.230 INCHES NOMINAL IN
CONNECTION SIZE0.438 IN. NPT DIA IN
SCALE ACCURACY2 PERCENT MIDDLE HALF OF RANGE,3 PERCENT REMAINDER
END ITEM IDENTIFICATIONPOSEIDON MATERIAL; PROPULSION SYSTEMS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
34U-181Interchangeable
interchangeable cross-reference
interchangeable
000527378Interchangeable
interchangeable cross-reference
interchangeable
76002Interchangeable
interchangeable cross-reference
interchangeable
101003Interchangeable
interchangeable cross-reference
interchangeable
874131Interchangeable
interchangeable cross-reference
interchangeable
851SA201Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy P644U?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is P644U?
P644U is a P644U.
What parts can replace P644U?
There are 21 known substitutes for P644U: 34U-181, 000527378, 76002 and 18 more. Substitute compatibility should be verified for your specific system.
Is P644U still available?
P644U is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — P644U

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026