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Technical Data Sheet
PartsTable / COMPONENT / 5831825
5831825 ✓ 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 WASHER,LOCK is a the manufacturer industrial component. Key specifications include end_item_identification: MK 6 MOD 2 SHIPBOARD INTERNAL LOCKING SYSTEMS MOD (SMILS). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-383-8503, 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
5831825
NSN: 5310-01-383-8503
FSC: 5310
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
end_item_identificationMK 6 MOD 2 SHIPBOARD INTERNAL LOCKING SYSTEMS MOD (SMILS)
NSN5310-01-383-8503
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5831825 · 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
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONMK 6 MOD 2 SHIPBOARD INTERNAL LOCKING SYSTEMS MOD (SMILS)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
121200DInterchangeable
interchangeable cross-reference
interchangeable
1689KInterchangeable
interchangeable cross-reference
interchangeable
1689Interchangeable
interchangeable cross-reference
interchangeable
TS-MCL-1268Interchangeable
interchangeable cross-reference
interchangeable
12712-00000Interchangeable
interchangeable cross-reference
interchangeable
17195Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5831825?
5831825 is a WASHER,LOCK.
What parts can replace 5831825?
There are 16 known substitutes for 5831825: 121200D, 1689K, 1689 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5831825?
5831825 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-383-8503. 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