PartsTable
Technical Data Sheet
131503 ✓ 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 temp_rating: -54.0 CELSIUS AND 71.0 CELSIUS DEGC, overall_width: 4.600 INCHES NOMINAL IN, overall_height: 2.300 INCHES NOMINAL IN, reservoir_type: INTEGRAL, extended_length: 17.950 INCHES NOMINAL IN, actuation_method: DIRECT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-013-1503, 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
131503
NSN: 5310-00-013-1503
FSC: 5310
CAGE: 12204 — CHRYSLER REALTY COMPANY LLC DBA DAIMLER CHRYSLER (USA)
SPECIFICATIONS
temp_rating-54.0 CELSIUS AND 71.0 CELSIUS DEGC
overall_width4.600 INCHES NOMINAL IN
overall_height2.300 INCHES NOMINAL IN
reservoir_typeINTEGRAL
extended_length17.950 INCHES NOMINAL IN
actuation_methodDIRECT
compressed_length15.650 INCHES NOMINAL IN
features_providedFILLER PLUG
fsc_application_dataACFT BRAKE SYSTEM
first_end_hole_diameter0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
bleeding_feature_quantity1
first_end_outside_diameter1.078 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
NSN5310-00-013-1503
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 131503 · 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
NUT STYLE: CAP
WIDTH ACROSS FLATS: 0.625 INCHES NOMINAL IN
THREAD SERIES: UNF
NOMINAL THREAD SIZE: 0.438 INCHES IN
BEARING SURFACE TYPE: CHAMFERED
THREAD QUANTITY PER INCH: 20
NUT HEIGHT: 0.688 INCHES NOMINAL IN
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLECAP
WIDTH ACROSS FLATS0.625 INCHES NOMINAL IN
THREAD SERIESUNF
NOMINAL THREAD SIZE0.438 INCHES IN
BEARING SURFACE TYPECHAMFERED
THREAD QUANTITY PER INCH20
NUT HEIGHT0.688 INCHES NOMINAL IN
THREAD CLASS2B
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY HEIGHT RQMT
NONDEFINITIVE SPEC/STD DATAC TYPE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
131402Interchangeable
interchangeable cross-reference
interchangeable
MILB857TYPECInterchangeable
interchangeable cross-reference
interchangeable
AA55629-3Interchangeable
interchangeable cross-reference
interchangeable
131482Interchangeable
interchangeable cross-reference
interchangeable
131485Interchangeable
interchangeable cross-reference
interchangeable
131500Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 131503?
131503 is a CYLINDER ASSEMBLY,HYDRAULIC BRAK.
What parts can replace 131503?
There are 11 known substitutes for 131503: 131402, MILB857TYPEC, AA55629-3 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 131503?
131503 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-013-1503. This indicates validated use in U.S. government and defense supply chains.
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