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Technical Data Sheet
PartsTable / COMPONENT / 121C2-14-4
121C2-14-4 ✓ 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 NUT,PLAIN,PLATE is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-656-2239, 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
121C2-14-4
NSN: 5310-00-656-2239
FSC: 5310
CAGE: 96101 — GAS EQUIPMENT ENGINEERING CORPORATION, THE DBA GEECO (USA)
SPECIFICATIONS
Part Number121C2-14-4
NSN5310-00-656-2239
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 121C2-14-4 · 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 15
54B6236Interchangeable
interchangeable cross-reference
interchangeable
AB-1011Interchangeable
interchangeable cross-reference
interchangeable
5310PL0649881Interchangeable
interchangeable cross-reference
interchangeable
A564Interchangeable
interchangeable cross-reference
interchangeable
7023110Interchangeable
interchangeable cross-reference
interchangeable
B423Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121C2-14-4?
121C2-14-4 is a NUT,PLAIN,PLATE.
What parts can replace 121C2-14-4?
There are 15 known substitutes for 121C2-14-4: 54B6236, AB-1011, 5310PL0649881 and 12 more. Substitute compatibility should be verified for your specific system.
Is 121C2-14-4 still available?
121C2-14-4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026