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A219-66 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A219-66: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5310-00-020-0359, 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
A219-66
NSN: 5310-00-020-0359
FSC: 5310 — Nuts and Washers
CAGE: 03533 — CRANE CARRIER COMPANY, LLC (USA)
SPECIFICATIONS
Part NumberA219-66
NSN5310-00-020-0359
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A219-66 · 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
SUBSTITUTES & CROSS-REFERENCES 7
219-066Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2533408PC23Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
30510Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
CF-21NE-108Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
219-66Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
21NE108Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A219-66?
A219-66 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace A219-66?
There are 7 known substitutes for A219-66: 219-066, 2533408PC23, 30510 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A219-66?
A219-66 is cataloged in the U.S. Government catalog under NSN 5310-00-020-0359. 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.