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4KK511 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4KK511: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include supplementary_features: TREATMENT: DACROMET 500B BLACK, end_item_identification: 2320-01-504-5218. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-526-1038, 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
4KK511
NSN: 5310-01-526-1038
FSC: 5310 — Nuts and Washers
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
supplementary_featuresTREATMENT: DACROMET 500B BLACK
end_item_identification2320-01-504-5218
NSN5310-01-526-1038
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4KK511 · 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
KEY FEATURES
•
SUPPLEMENTARY FEATURES: TREATMENT: DACROMET 500B BLACK
TECHNICAL CHARACTERISTICS
SUPPLEMENTARY FEATURESTREATMENT: DACROMET 500B BLACK
END ITEM IDENTIFICATION2320-01-504-5218
SUBSTITUTES & CROSS-REFERENCES 1
182-9670Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4KK511?
4KK511 is a WASHER,LOCK.
What parts can replace 4KK511?
There is 1 known substitute for 4KK511: 182-9670. Substitute compatibility should be verified for your specific system.
What is the NSN for 4KK511?
4KK511 is cataloged in the U.S. Government catalog under NSN 5310-01-526-1038. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.