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PartsTable / COMPONENT / H51650-4
H51650-4 ✓ 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. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-162-5727, 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
H51650-4
NSN: 5310-01-162-5727
FSC: 5310
CAGE: 15653 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)
SPECIFICATIONS
Part NumberH51650-4
NSN5310-01-162-5727
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: H51650-4 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
BACN10JC4Interchangeable
interchangeable cross-reference
interchangeable
BACN10JC4CDInterchangeable
interchangeable cross-reference
interchangeable
BRH10C4DInterchangeable
Same NIIN cross-reference
interchangeable
T6C428JCDInterchangeable
Same NIIN cross-reference
interchangeable
NS202486-048Interchangeable
Same NIIN cross-reference
interchangeable
H51650-4BACInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H51650-4?
H51650-4 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace H51650-4?
There are 7 known substitutes for H51650-4: BACN10JC4, BACN10JC4CD, BRH10C4D and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for H51650-4?
H51650-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-162-5727. 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