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Technical Data Sheet
PartsTable / COMPONENT / P55-6
P55-6 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

CYLINDER ASSEMBLY,HYDRAULIC BRAK. Key specifications include height: 0.219 INCHES NOMINAL IN, diameter: 0.312 INCHES NOMINAL IN, material: STEEL OVERALL, head_style: ROUND, overall_length: 21.687 INCHES NOMINAL IN, projector_type: CURVED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-050-1586, 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
P55-6
NSN: 5315-00-050-1586
FSC: 5315
CAGE: 96152 — BORG-WARNER CORP MARVEL-SCHEBLER/TILLOTSON DIV (USA)
SPECIFICATIONS
height0.219 INCHES NOMINAL IN
diameter0.312 INCHES NOMINAL IN
materialSTEEL OVERALL
head_styleROUND
overall_length21.687 INCHES NOMINAL IN
projector_typeCURVED
pressure_rating100.0 POUNDS PER SQUARE INCH (PSI) NOMINAL AND 168.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
sound_unit_typeSINGLE
operation_methodAIR
style_designatorSTRAIGHT
pin_head_diameter0.562 INCHES NOMINAL IN
under_head_length0.875 INCHES NOMINAL IN
NSN5315-00-050-1586
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: P55-6 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HEAD STYLE: ROUND
•
DIAMETER: 0.312 INCHES NOMINAL IN
•
HEIGHT: 0.219 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
UNDER HEAD LENGTH: 0.875 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT
•
PIN HEAD DIAMETER: 0.562 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HEAD STYLEROUND
DIAMETER0.312 INCHES NOMINAL IN
HEIGHT0.219 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
UNDER HEAD LENGTH0.875 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT
PIN HEAD DIAMETER0.562 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
86-503-2Interchangeable
interchangeable cross-reference
interchangeable
15769AInterchangeable
interchangeable cross-reference
interchangeable
650-C20Interchangeable
interchangeable cross-reference
interchangeable
P55-6Interchangeable
interchangeable cross-reference
interchangeable
3-4403Interchangeable
interchangeable cross-reference
interchangeable
414-1930-003Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is P55-6?
P55-6 is a CYLINDER ASSEMBLY,HYDRAULIC BRAK.
What parts can replace P55-6?
There are 12 known substitutes for P55-6: 86-503-2, 15769A, 650-C20 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for P55-6?
P55-6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-050-1586. 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