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Technical Data Sheet
PartsTable / COMPONENT / 6511-03020
6511-03020 ✓ 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 part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-337-8329, 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
6511-03020
NSN: 5310-00-337-8329
FSC: 5310
CAGE: F6151 — SAFRAN (FRA)
SPECIFICATIONS
Part Number6511-03020
NSN5310-00-337-8329
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6511-03020 · 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 28
C110Interchangeable
interchangeable cross-reference
interchangeable
SPG1005CPInterchangeable
interchangeable cross-reference
interchangeable
SPG1005Interchangeable
interchangeable cross-reference
interchangeable
5310000347-00Interchangeable
interchangeable cross-reference
interchangeable
60205Interchangeable
interchangeable cross-reference
interchangeable
17KP396Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6511-03020?
6511-03020 is a WASHER,LOCK.
What parts can replace 6511-03020?
There are 28 known substitutes for 6511-03020: C110, SPG1005CP, SPG1005 and 25 more. Substitute compatibility should be verified for your specific system.
Is 6511-03020 still available?
6511-03020 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