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G18421L5-3 — NUT,SELF-LOCKING,GANG CHANNEL

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

G18421L5-3: NUT,SELF-LOCKING,GANG CHANNEL.

The NUT,SELF-LOCKING,GANG CHANNEL is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5310-01-171-0569, 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
G18421L5-3
NSN: 5310-01-171-0569
FSC: 5310 — Nuts and Washers
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
Part NumberG18421L5-3
NSN5310-01-171-0569
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: G18421L5-3 · 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
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 4
10110026Reference document
Same NSN cross-reference
Reference document — Informative reference only
BCN445C3-5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
F49249E3-5XNSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST3M445C3M5Reference document
Same NSN cross-reference
Reference document — Vendor item drawing 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 G18421L5-3?
G18421L5-3 is a NUT,SELF-LOCKING,GANG CHANNEL.
What parts can replace G18421L5-3?
There are 4 known substitutes for G18421L5-3: 10110026, BCN445C3-5, F49249E3-5XN and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for G18421L5-3?
G18421L5-3 is cataloged in the U.S. Government catalog under NSN 5310-01-171-0569. 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.