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Technical Data Sheet
PartsTable / COMPONENT / 12759-00661
12759-00661 ✓ 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 PIN,STRAIGHT,HEADED 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 5315-01-557-0777, 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
12759-00661
NSN: 5315-01-557-0777
FSC: 5315
CAGE: 0Y3H3 — FASTENAL COMPANY DBA FASTENAL CO (USA)
SPECIFICATIONS
end_item_identificationMRAP - UNIQUE NSN - USED ON 3 MRAP VARIANTS
NSN5315-01-557-0777
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12759-00661 · 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 11
DK-50Interchangeable
interchangeable cross-reference
interchangeable
146 4924Interchangeable
interchangeable cross-reference
interchangeable
300-6102Interchangeable
interchangeable cross-reference
interchangeable
MIL-D-4824Interchangeable
interchangeable cross-reference
interchangeable
146 4932Interchangeable
interchangeable cross-reference
interchangeable
XR177Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12759-00661?
12759-00661 is a PIN,STRAIGHT,HEADED.
What parts can replace 12759-00661?
There are 11 known substitutes for 12759-00661: DK-50, 146 4924, 300-6102 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12759-00661?
12759-00661 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-557-0777. 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