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PartsTable / COMPONENT / M45913/3-5FG8C
M45913/3-5FG8C ✓ 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 M45913/3-5FG8C 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 5310-00-241-6658, 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
M45913/3-5FG8C
NSN: 5310-00-241-6658
FSC: 5310
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM45913/3-5FG8C
NSN5310-00-241-6658
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M45913/3-5FG8C · 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 DIRECTION: RIGHT-HAND
•
WIDTH ACROSS FLATS: 0.489 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
THREAD CLASS: 3B
•
MATERIAL: STEEL NUT
•
SURFACE TREATMENT: CADMIUM NUT
•
NUT STYLE: HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS0.489 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD CLASS3B
MATERIALSTEEL NUT
SURFACE TREATMENTCADMIUM NUT
NUT STYLEHEXAGON
MATERIALPLASTIC POLYAMIDE NYLON LOCKING INSERT
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
5210114 PART 153Interchangeable
interchangeable cross-reference
interchangeable
5310PL0645410Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-45913/3A-M45913/3-12CG8Interchangeable
interchangeable cross-reference
interchangeable
7114334Interchangeable
interchangeable cross-reference
interchangeable
M45913/3-7FG8PInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-45913/3AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M45913/3-5FG8C?
M45913/3-5FG8C is a M45913/3-5FG8C.
What parts can replace M45913/3-5FG8C?
There are 13 known substitutes for M45913/3-5FG8C: 5210114 PART 153, 5310PL0645410, MIL-DTL-45913/3A-M45913/3-12CG8 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M45913/3-5FG8C?
M45913/3-5FG8C is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-241-6658. 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