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PartsTable / COMPONENT / 10121409
10121409 ✓ 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. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 0.089 INCHES MINIMUM IN, outside_diameter: 0.141 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, material_thickness: 0.031 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-478-4448, 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
10121409
NSN: 5310-00-478-4448
FSC: 5310
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter0.089 INCHES MINIMUM IN
outside_diameter0.141 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
material_thickness0.031 INCHES NOMINAL IN
NSN5310-00-478-4448
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10121409 · 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
•
MATERIAL: COPPER ALLOY OVERALL
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 0.141 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.031 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.089 INCHES MINIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY OVERALL
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER0.141 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN
MATERIAL THICKNESS0.031 INCHES NOMINAL IN
HOLE DIAMETER0.089 INCHES MINIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
N02Interchangeable
interchangeable cross-reference
interchangeable
0-2Interchangeable
interchangeable cross-reference
interchangeable
104-526-9002Interchangeable
interchangeable cross-reference
interchangeable
13217E3801Interchangeable
interchangeable cross-reference
interchangeable
X20082Interchangeable
interchangeable cross-reference
interchangeable
905E776 ITEM 44Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10121409?
10121409 is a WASHER,LOCK.
What parts can replace 10121409?
There are 11 known substitutes for 10121409: N02, 0-2, 104-526-9002 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10121409?
10121409 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-478-4448. 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