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PartsTable / COMPONENT / M45913/4-10CG8Z
M45913/4-10CG8Z ✓ 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 M45913/4-10CG8Z is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-570-7523, 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
M45913/4-10CG8Z
NSN: 5310-01-570-7523
FSC: 5310
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM45913/4-10CG8Z
NSN5310-01-570-7523
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M45913/4-10CG8Z · 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
•
THREAD CLASS: 3B
•
NUT HEIGHT: 0.535 INCHES MINIMUM AND 0.731 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
NUT STYLE: HEXAGON
•
MATERIAL: STEEL OVERALL
•
WIDTH ACROSS FLATS: 0.922 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 11
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3B
NUT HEIGHT0.535 INCHES MINIMUM AND 0.731 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NUT STYLEHEXAGON
MATERIALSTEEL OVERALL
END ITEM IDENTIFICATION2320-01-544-9638 TRUCK, UTILITY; MRAP - COUGAR TOW; MRAP - COUGAR SABR/TOW
WIDTH ACROSS FLATS0.922 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH11
NOMINAL THREAD SIZE0.625 INCHES IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633 TYPE II ASSN STD SINGLE TREATMENT RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
MS51943-4Interchangeable
interchangeable cross-reference
interchangeable
5310PL0918864Interchangeable
interchangeable cross-reference
interchangeable
M45913/3-5FG8PInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-45913Interchangeable
interchangeable cross-reference
interchangeable
MS51943-57Interchangeable
interchangeable cross-reference
interchangeable
M45913/3-24FG8CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M45913/4-10CG8Z?
M45913/4-10CG8Z is a M45913/4-10CG8Z.
What parts can replace M45913/4-10CG8Z?
There are 21 known substitutes for M45913/4-10CG8Z: MS51943-4, 5310PL0918864, M45913/3-5FG8P and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M45913/4-10CG8Z?
M45913/4-10CG8Z is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-570-7523. 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