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Technical Data Sheet
PartsTable / COMPONENT / AN18
AN18 ✓ 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,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include width: 51.000 INCHES MINIMUM AND 53.000 INCHES MAXIMUM IN, length: 350.000 YARDS NOMINAL, thickness: 0.0005 INCHES NOMINAL IN, material_transparency: OPAQUE, strengthening_feature: INTERNALLY MOLDED-IN REINFORCEMENT, minimum_tensile_strength: ERR-060. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-185-6341, 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
AN18
NSN: 5310-00-185-6341
FSC: 5310
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
width51.000 INCHES MINIMUM AND 53.000 INCHES MAXIMUM IN
length350.000 YARDS NOMINAL
thickness0.0005 INCHES NOMINAL IN
material_transparencyOPAQUE
strengthening_featureINTERNALLY MOLDED-IN REINFORCEMENT
minimum_tensile_strengthERR-060
NSN5310-00-185-6341
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AN18 · 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 11
26054Interchangeable
interchangeable cross-reference
interchangeable
119427Interchangeable
interchangeable cross-reference
interchangeable
15510919Interchangeable
interchangeable cross-reference
interchangeable
AN18Interchangeable
interchangeable cross-reference
interchangeable
AN18LInterchangeable
interchangeable cross-reference
interchangeable
PAN8999-104Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN18?
AN18 is a NUT,PLAIN,ROUND.
What parts can replace AN18?
There are 11 known substitutes for AN18: 26054, 119427, 15510919 and 8 more. Substitute compatibility should be verified for your specific system.
Is AN18 still available?
AN18 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