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Technical Data Sheet
PartsTable / COMPONENT / 26553 11879
26553 11879 ✓ 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. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-235-1929, 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
26553 11879
NSN: 5310-01-235-1929
FSC: 5310
CAGE: 59747 — REXNORD INDUSTRIES, LLC DIV COUPLINGS DIVISION (USA)
SPECIFICATIONS
Part Number26553 11879
NSN5310-01-235-1929
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 26553 11879 · 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 12
11879-2AInterchangeable
interchangeable cross-reference
interchangeable
11879Interchangeable
interchangeable cross-reference
interchangeable
2Z3351-458Interchangeable
interchangeable cross-reference
interchangeable
118679Interchangeable
interchangeable cross-reference
interchangeable
257BInterchangeable
interchangeable cross-reference
interchangeable
P-9771Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 26553 11879?
26553 11879 is a WASHER,FLAT.
What parts can replace 26553 11879?
There are 12 known substitutes for 26553 11879: 11879-2A, 11879, 2Z3351-458 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 26553 11879?
26553 11879 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-235-1929. 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