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Technical Data Sheet
PartsTable / COMPONENT / U3-5163P2
U3-5163P2 ✓ 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

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 464 OVERALL, nut_style: HEXAGON, nut_height: 0.156 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNEF, locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-596-0139, 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
U3-5163P2
NSN: 5310-00-596-0139
FSC: 5310
CAGE: 49956 — RAYTHEON COMPANY DIV CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY 464 OVERALL
nut_styleHEXAGON
nut_height0.156 INCHES NOMINAL IN
thread_class2B
thread_seriesUNEF
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
surface_treatmentNICKEL OVERALL
width_across_flats0.500 INCHES NOMINAL IN
nominal_thread_size0.375 INCHES IN
bearing_surface_typeCHAMFERED
end_item_identificationW/S: TA-4J AIRCRAFT
NSN5310-00-596-0139
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: U3-5163P2 · 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 HEIGHT: 0.156 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY 464 OVERALL
•
THREAD SERIES: UNEF
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
THREAD QUANTITY PER INCH: 32
•
BEARING SURFACE TYPE: CHAMFERED
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
NUT HEIGHT0.156 INCHES NOMINAL IN
MATERIALCOPPER ALLOY 464 OVERALL
THREAD SERIESUNEF
NOMINAL THREAD SIZE0.375 INCHES IN
THREAD QUANTITY PER INCH32
BEARING SURFACE TYPECHAMFERED
END ITEM IDENTIFICATIONW/S: TA-4J AIRCRAFT
THREAD DIRECTIONRIGHT-HAND
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
M3638Interchangeable
interchangeable cross-reference
interchangeable
42304Interchangeable
interchangeable cross-reference
interchangeable
AU-4358Interchangeable
interchangeable cross-reference
interchangeable
W-14425Interchangeable
interchangeable cross-reference
interchangeable
11669410Interchangeable
interchangeable cross-reference
interchangeable
3-5132P2Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is U3-5163P2?
U3-5163P2 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace U3-5163P2?
There are 6 known substitutes for U3-5163P2: M3638, 42304, AU-4358 and 3 more. Substitute compatibility should be verified for your specific system.
Is U3-5163P2 still available?
U3-5163P2 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