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Technical Data Sheet
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4D98243ITEM55 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4D98243ITEM55: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5310-01-476-5423, 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
4D98243ITEM55
NSN: 5310-01-476-5423
FSC: 5310 — Nuts and Washers
CAGE: 04808 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV CURTISS-WRIGHT EMD (USA)
SPECIFICATIONS
Part Number4D98243ITEM55
NSN5310-01-476-5423
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4D98243ITEM55 · 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 2
4D98243Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
4395B56Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 4D98243ITEM55?
4D98243ITEM55 is a WASHER,LOCK.
What parts can replace 4D98243ITEM55?
There are 2 known substitutes for 4D98243ITEM55: 4D98243, 4395B56. Substitute compatibility should be verified for your specific system.
What is the NSN for 4D98243ITEM55?
4D98243ITEM55 is cataloged in the U.S. Government catalog under NSN 5310-01-476-5423. This indicates validated use in U.S. government and defense supply chains.
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