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PartsTable / COMPONENT / 8389895
8389895 ✓ 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,INTERNAL WRENCHING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: INTERNAL WRENCHING, nut_height: 0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN, nut_diameter: 0.393 INCHES MINIMUM AND 0.413 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-208-7211, 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
8389895
NSN: 5310-00-208-7211
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleINTERNAL WRENCHING
nut_height0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
nut_diameter0.393 INCHES MINIMUM AND 0.413 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.250 INCHES IN
internal_drive_styleMULTIPLE SPLINE
thread_quantity_per_inch28
NSN5310-00-208-7211
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8389895 · 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
•
NUT STYLE: INTERNAL WRENCHING
•
NUT HEIGHT: 0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
•
INTERNAL DRIVE STYLE: MULTIPLE SPLINE
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
THREAD QUANTITY PER INCH: 28
•
NUT DIAMETER: 0.393 INCHES MINIMUM AND 0.413 INCHES MAXIMUM IN
•
THREAD SERIES: UNF
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEINTERNAL WRENCHING
NUT HEIGHT0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
INTERNAL DRIVE STYLEMULTIPLE SPLINE
NOMINAL THREAD SIZE0.250 INCHES IN
THREAD QUANTITY PER INCH28
NUT DIAMETER0.393 INCHES MINIMUM AND 0.413 INCHES MAXIMUM IN
THREAD SERIESUNF
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
THREAD CLASS3B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
570296Interchangeable
interchangeable cross-reference
interchangeable
UNIVERSALInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8389895?
8389895 is a NUT,PLAIN,INTERNAL WRENCHING.
What parts can replace 8389895?
There are 2 known substitutes for 8389895: 570296, UNIVERSAL. Substitute compatibility should be verified for your specific system.
What is the NSN for 8389895?
8389895 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-208-7211. 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