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3011431 ✓ 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,FLAT 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 5310-01-572-2570, 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
3011431
NSN: 5310-01-572-2570
FSC: 5310
CAGE: 1EFH8 — GENERAL DYNAMICS LAND SYSTEMS - FORCE PROTECTION INC. DBA GDLS DIV GDLS-FP (USA)
SPECIFICATIONS
Part Number3011431
NSN5310-01-572-2570
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3011431 · 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 19
B5124055Interchangeable
interchangeable cross-reference
interchangeable
PC5124055Interchangeable
interchangeable cross-reference
interchangeable
5124055Interchangeable
interchangeable cross-reference
interchangeable
33082Interchangeable
interchangeable cross-reference
interchangeable
8519ITEM43Interchangeable
interchangeable cross-reference
interchangeable
85-4785407Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3011431?
3011431 is a WASHER,FLAT.
What parts can replace 3011431?
There are 19 known substitutes for 3011431: B5124055, PC5124055, 5124055 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3011431?
3011431 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-572-2570. 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