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Technical Data Sheet
PartsTable / COMPONENT / M45913/1-8FG5C
M45913/1-8FG5C ✓ 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 M45913/1-8FG5C is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-067-9507, 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
M45913/1-8FG5C
NSN: 5310-00-067-9507
FSC: 5310
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM45913/1-8FG5C
NSN5310-00-067-9507
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M45913/1-8FG5C · 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: 2B
•
NUT HEIGHT: 0.579 INCHES MINIMUM AND 0.609 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON LOCKING INSERT
•
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
•
THREAD QUANTITY PER INCH: 20
•
NOMINAL THREAD SIZE: 0.500 INCHES IN
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
BEARING SURFACE FINISH: 125.0 MICROINCHES
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2B
NUT HEIGHT0.579 INCHES MINIMUM AND 0.609 INCHES MAXIMUM IN
MATERIALPLASTIC POLYAMIDE NYLON LOCKING INSERT
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
THREAD QUANTITY PER INCH20
NOMINAL THREAD SIZE0.500 INCHES IN
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
BEARING SURFACE FINISH125.0 MICROINCHES
NUT STYLEHEXAGON
THREAD SERIESUNF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
122403Interchangeable
interchangeable cross-reference
interchangeable
N21264PC13Interchangeable
interchangeable cross-reference
interchangeable
N25155PC14Interchangeable
interchangeable cross-reference
interchangeable
MS27473E20A2SInterchangeable
interchangeable cross-reference
interchangeable
KJ6E20A2SNInterchangeable
interchangeable cross-reference
interchangeable
JT06RE20-2SInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M45913/1-8FG5C?
M45913/1-8FG5C is a M45913/1-8FG5C.
What parts can replace M45913/1-8FG5C?
There are 28 known substitutes for M45913/1-8FG5C: 122403, N21264PC13, N25155PC14 and 25 more. Substitute compatibility should be verified for your specific system.
Is M45913/1-8FG5C still available?
M45913/1-8FG5C 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