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34-393 ✓ 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

CYLINDER ASSEMBLY,HYDRAULIC BRAK. Key specifications include material: STEEL BODY, bore_type: STRAIGHT, head_style: ROUND, port_style: GASKET SEAL SINGLE PORT, head_height: 0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN, thread_class: 2A A. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-015-8418, 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
34-393
NSN: 3455-00-015-8418
FSC: 3455
CAGE: 48521 — COLT INDUSTRIES OPERATING CORP PRATT AND WHITNEY MACHINE TOOL DIV
SPECIFICATIONS
materialSTEEL BODY
bore_typeSTRAIGHT
head_styleROUND
port_styleGASKET SEAL SINGLE PORT
head_height0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
thread_class2A A
bore_diameter1.156 INCHES NOMINAL IN
head_diameter0.443 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN
overall_width2.500 INCHES NOMINAL IN
thread_length3.900 INCHES NOMINAL IN
overall_height2.625 INCHES NOMINAL IN
overall_length2.760 INCHES NOMINAL IN
NSN3455-00-015-8418
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CYLINDER ASSEMBLY,HYDRAULIC BRAK TITLE COMPONENT PN 34-393 MFR CYLINDER ASSEMBLY,HYDR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
40539Interchangeable
interchangeable cross-reference
interchangeable
40539AInterchangeable
interchangeable cross-reference
interchangeable
16-1Interchangeable
interchangeable cross-reference
interchangeable
SAW-1911213Interchangeable
interchangeable cross-reference
interchangeable
328AS291-3Interchangeable
interchangeable cross-reference
interchangeable
146-26Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 34-393?
34-393 is a CYLINDER ASSEMBLY,HYDRAULIC BRAK.
What parts can replace 34-393?
There are 26 known substitutes for 34-393: 40539, 40539A, 16-1 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 34-393?
34-393 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-015-8418. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026