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PartsTable / COMPONENT / 9421427
9421427 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,LOCK is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-129-7508, 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
9421427
NSN: 5310-01-129-7508
FSC: 5310
CAGE: 16764 — GENERAL MOTORS CORP DELCO REMY DIV (USA)
SPECIFICATIONS
Part Number9421427
NSN5310-01-129-7508
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 9421427 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
2DB34Interchangeable
interchangeable cross-reference
interchangeable
3043540Interchangeable
interchangeable cross-reference
interchangeable
3018686Interchangeable
interchangeable cross-reference
interchangeable
11504248Interchangeable
Same NIIN cross-reference
interchangeable
138549Interchangeable
Same NIIN cross-reference
interchangeable
91101A233Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9421427?
9421427 is a WASHER,LOCK.
What parts can replace 9421427?
There are 7 known substitutes for 9421427: 2DB34, 3043540, 3018686 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9421427?
9421427 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-129-7508. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026