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Technical Data Sheet
PartsTable / COMPONENT / 12759-00681
12759-00681 ✓ 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,FLAT is a the manufacturer industrial component. Key specifications include end_item_identification: MRAP - UNIQUE NSN - USED ON 3 MRAP VARIANTS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-557-0953, 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
12759-00681
NSN: 5310-01-557-0953
FSC: 5310
CAGE: 0Y3H3 — FASTENAL COMPANY DBA FASTENAL CO (USA)
SPECIFICATIONS
end_item_identificationMRAP - UNIQUE NSN - USED ON 3 MRAP VARIANTS
NSN5310-01-557-0953
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12759-00681 · 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 IDENTIFICATIONMRAP - UNIQUE NSN - USED ON 3 MRAP VARIANTS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
40249Interchangeable
interchangeable cross-reference
interchangeable
1417-8-01-455Interchangeable
interchangeable cross-reference
interchangeable
6850PL0850884Interchangeable
interchangeable cross-reference
interchangeable
10145335Interchangeable
interchangeable cross-reference
interchangeable
PROTEK-SORB 121Interchangeable
interchangeable cross-reference
interchangeable
95995-01Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12759-00681?
12759-00681 is a WASHER,FLAT.
What parts can replace 12759-00681?
There are 8 known substitutes for 12759-00681: 40249, 1417-8-01-455, 6850PL0850884 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12759-00681?
12759-00681 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-557-0953. 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