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10420731 ✓ 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 PIN,GROOVED,HEADLESS is a the manufacturer industrial component. Key specifications include special_features: MACHINE GUN 5.56MM,M249 (SAW),NSN1005-01-127-7510 MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-128-5613, 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
10420731
NSN: 5315-01-128-5613
FSC: 5315
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
special_featuresMACHINE GUN 5.56MM,M249 (SAW),NSN1005-01-127-7510 MM
NSN5315-01-128-5613
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10420731 · 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
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESMACHINE GUN 5.56MM,M249 (SAW),NSN1005-01-127-7510 MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
09-22265Interchangeable
interchangeable cross-reference
interchangeable
C143M310Interchangeable
interchangeable cross-reference
interchangeable
19994Interchangeable
interchangeable cross-reference
interchangeable
22265Interchangeable
interchangeable cross-reference
interchangeable
222-10NL2221359Interchangeable
interchangeable cross-reference
interchangeable
230-013-044Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10420731?
10420731 is a PIN,GROOVED,HEADLESS.
What parts can replace 10420731?
There are 17 known substitutes for 10420731: 09-22265, C143M310, 19994 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10420731?
10420731 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-128-5613. 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