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PartsTable / COMPONENT / 172-158
172-158 ✓ 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 bore_type: STRAIGHT, port_style: GASKET SEAL SINGLE PORT, bore_diameter: 1.500 INCHES NOMINAL IN, overall_width: 3.531 INCHES NOMINAL IN, overall_height: 2.562 INCHES NOMINAL IN, extended_length: 6.188 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6605-00-318-7590, 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
172-158
NSN: 6605-00-318-7590
FSC: 6605
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
bore_typeSTRAIGHT
port_styleGASKET SEAL SINGLE PORT
bore_diameter1.500 INCHES NOMINAL IN
overall_width3.531 INCHES NOMINAL IN
overall_height2.562 INCHES NOMINAL IN
extended_length6.188 INCHES NOMINAL IN
features_providedSERRATED ADJUSTER
port_thread_class2B SINGLE PORT
mounting_provisionTHREADED MOUNTING HOLES
first_end_fork_depth0.250 INCHES NOMINAL ALL WORKING ENDS IN
first_end_fork_width0.688 INCHES NOMINAL ALL WORKING ENDS IN
port_thread_diameter0.438 INCHES NOMINAL SINGLE PORT IN
NSN6605-00-318-7590
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CYLINDER ASSEMBLY,HYDRAULIC BRAK TITLE COMPONENT PN 172-158 MFR CYLINDER ASSEMBLY,HYDR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
W3677Interchangeable
interchangeable cross-reference
interchangeable
3386Interchangeable
interchangeable cross-reference
interchangeable
5450553Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 172-158?
172-158 is a CYLINDER ASSEMBLY,HYDRAULIC BRAK.
What parts can replace 172-158?
There are 3 known substitutes for 172-158: W3677, 3386, 5450553. Substitute compatibility should be verified for your specific system.
What is the NSN for 172-158?
172-158 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6605-00-318-7590. 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