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326329 ✓ 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: STEEL COMP 410 OVERALL, hole_diameter: 0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN, outside_diameter: 0.945 INCHES MINIMUM AND 0.965 INCHES MAXIMUM IN, style_designator: FLAT INTERNAL TEETH, material_thickness: 0.045 INCHES NOMINAL IN, material_document_and_classification: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-121-8375, 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
326329
NSN: 5310-00-121-8375
FSC: 5310
CAGE: 32195 — OUTBOARD MARINE CORP JOHNSON MOTORS DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 410 OVERALL
hole_diameter0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN
outside_diameter0.945 INCHES MINIMUM AND 0.965 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
material_thickness0.045 INCHES NOMINAL IN
material_document_and_classificationAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-121-8375
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 326329 · 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
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.945 INCHES MINIMUM AND 0.965 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 410 OVERALL
•
HOLE DIAMETER: 0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.045 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORFLAT INTERNAL TEETH
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.945 INCHES MINIMUM AND 0.965 INCHES MAXIMUM IN
MATERIALSTEEL COMP 410 OVERALL
HOLE DIAMETER0.640 INCHES MINIMUM AND 0.659 INCHES MAXIMUM IN
MATERIAL THICKNESS0.045 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
23357Interchangeable
interchangeable cross-reference
interchangeable
7411163Interchangeable
interchangeable cross-reference
interchangeable
307237Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 326329?
326329 is a WASHER,LOCK.
What parts can replace 326329?
There are 3 known substitutes for 326329: 23357, 7411163, 307237. Substitute compatibility should be verified for your specific system.
What is the NSN for 326329?
326329 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-121-8375. 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