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Technical Data Sheet
PartsTable / COMPONENT / 23-3520A
23-3520A ✓ 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,SELF-LOCKING,KNURLED is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-839-1255, 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
23-3520A
NSN: 5310-00-839-1255
FSC: 5310
CAGE: 26344 — NEW HAVEN MFG CORP (USA)
SPECIFICATIONS
Part Number23-3520A
NSN5310-00-839-1255
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 23-3520A · 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 13
1182Interchangeable
Brush,plater's,hand
interchangeable
54038Interchangeable
Brush,plater's,hand
interchangeable
44119Interchangeable
Brush,plater's,hand
interchangeable
31-1A3987Interchangeable
interchangeable cross-reference
interchangeable
1A3987Interchangeable
interchangeable cross-reference
interchangeable
SCD7694PT9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 23-3520A?
23-3520A is a NUT,SELF-LOCKING,KNURLED.
What parts can replace 23-3520A?
There are 13 known substitutes for 23-3520A: 1182, 54038, 44119 and 10 more. Substitute compatibility should be verified for your specific system.
Is 23-3520A still available?
23-3520A 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