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B18.24-2004 — Technical Data Sheet

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— · 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,HEXAGON is a the manufacturer industrial component. Key specifications include color: BLACK OVERALL, diameter: 0.125 INCHES NOMINAL IN, material: STEEL UNS K03104 OVERALL, nut_style: HEXAGON, thickness: 2.00 MILLIMETERS MINIMUM AND 2.80 MILLIMETERS MAXIMUM MM, head_style: BUTTON. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-123-0503, 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
B18.24-2004
NSN: 5310-01-123-0503
FSC: 5310
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)
SPECIFICATIONS
colorBLACK OVERALL
diameter0.125 INCHES NOMINAL IN
materialSTEEL UNS K03104 OVERALL
nut_styleHEXAGON
thickness2.00 MILLIMETERS MINIMUM AND 2.80 MILLIMETERS MAXIMUM MM
head_styleBUTTON
nut_height5.40 MILLIMETERS MINIMUM AND 5.90 MILLIMETERS MAXIMUM MM
head_height3.88 MILLIMETERS MINIMUM AND 4.00 MILLIMETERS MAXIMUM MM
point_styleCUP
thread_class3A A
head_diameter6.80 MILLIMETERS MINIMUM AND 7.00 MILLIMETERS MAXIMUM MM
hole_diameter13.30 MILLIMETERS MINIMUM AND 13.57 MILLIMETERS MAXIMUM MM
NSN5310-01-123-0503
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: B18.24-2004 · 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 3
520405Interchangeable
interchangeable cross-reference
interchangeable
B18163A050Interchangeable
Same NIIN cross-reference
interchangeable
AEN26M508000BA7A11Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B18.24-2004?
B18.24-2004 is a NUT,PLAIN,HEXAGON.
What parts can replace B18.24-2004?
There are 3 known substitutes for B18.24-2004: 520405, B18163A050, AEN26M508000BA7A11. Substitute compatibility should be verified for your specific system.
What is the NSN for B18.24-2004?
B18.24-2004 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-123-0503. 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: September 2026