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Technical Data Sheet
PartsTable / COMPONENT / 1855PX
1855PX ✓ 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

PISTON,INTERNAL COMBUSTION ENGIN. Key specifications include material: NICKEL ALLOY OVERALL, nut_style: ROUND, nut_diameter: 1.750 INCHES NOMINAL IN, thread_class: 2B, nut_thickness: 0.875 INCHES NOMINAL IN, thread_series: UNF. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-741-1712, 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
1855PX
NSN: 2805-00-741-1712
FSC: 2805
CAGE: 53781 — SPX CORP (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
nut_styleROUND
nut_diameter1.750 INCHES NOMINAL IN
thread_class2B
nut_thickness0.875 INCHES NOMINAL IN
thread_seriesUNF
thread_directionLEFT-HAND
nominal_thread_size1.375 INCHES IN
drilled_hole_diameter0.250 INCHES NOMINAL IN
hole_type_and_quantity2 DRILLED AND 2 TAPPED
hole_configuration_styleCONFIGURATION F
thread_quantity_per_inch12
NSN2805-00-741-1712
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PISTON,INTERNAL COMBUSTION ENGIN TITLE COMPONENT PN 1855PX MFR PISTON,INTERNAL COMBUS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
ES-2648-2A-5Interchangeable
interchangeable cross-reference
interchangeable
1401-21Interchangeable
interchangeable cross-reference
interchangeable
BACT42C2A1Interchangeable
interchangeable cross-reference
interchangeable
254817CInterchangeable
interchangeable cross-reference
interchangeable
SL4987PC31Interchangeable
interchangeable cross-reference
interchangeable
SL7723PC36Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1855PX?
1855PX is a PISTON,INTERNAL COMBUSTION ENGIN.
What parts can replace 1855PX?
There are 21 known substitutes for 1855PX: ES-2648-2A-5, 1401-21, BACT42C2A1 and 18 more. Substitute compatibility should be verified for your specific system.
Is 1855PX still available?
1855PX 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