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2DY408 — NUT,PLAIN,EXTENDED WASHER,HEXAGO

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2DY408: NUT,PLAIN,EXTENDED WASHER,HEXAGO.

NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include special_features: 3/8" - 16 SPINLOCK NUT, nominal_thread_size: 0.375 INCHES IN, end_item_identification: 4210-01-486-1035 TFFT (TACTICAL FIRE FIGHTING TRUCK); 2420-66-148-7692, HMEE (HIGH MOBILITY ENGINEER EXCAVATOR), thread_quantity_per_inch: 16. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-329-9101, 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
2DY408
NSN: 5310-01-329-9101
FSC: 5310 — Nuts and Washers
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
special_features3/8" - 16 SPINLOCK NUT
nominal_thread_size0.375 INCHES IN
end_item_identification4210-01-486-1035 TFFT (TACTICAL FIRE FIGHTING TRUCK); 2420-66-148-7692, HMEE (HIGH MOBILITY ENGINEER EXCAVATOR)
thread_quantity_per_inch16
NSN5310-01-329-9101
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2DY408 · 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
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
THREAD QUANTITY PER INCH: 16
TECHNICAL CHARACTERISTICS
NOMINAL THREAD SIZE0.375 INCHES IN
SPECIAL FEATURES3/8" - 16 SPINLOCK NUT
END ITEM IDENTIFICATION4210-01-486-1035 TFFT (TACTICAL FIRE FIGHTING TRUCK); 2420-66-148-7692, HMEE (HIGH MOBILITY ENGINEER EXCAVATOR)
THREAD QUANTITY PER INCH16
SUBSTITUTES & CROSS-REFERENCES 1
9904.6200Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 2DY408?
2DY408 is a NUT,PLAIN,EXTENDED WASHER,HEXAGO.
What parts can replace 2DY408?
There is 1 known substitute for 2DY408: 9904.6200. Substitute compatibility should be verified for your specific system.
What is the NSN for 2DY408?
2DY408 is cataloged in the U.S. Government catalog under NSN 5310-01-329-9101. 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.