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PartsTable / COMPONENT / K39253-4-5
K39253-4-5 ✓ 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,SELF-LOCKING,ROUND is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: ROUND, temp_rating: 1200.0 FAHRENHEIT NOMINAL DEGF, nut_diameter: 0.620 INCHES NOMINAL IN, thread_class: 3B, nut_thickness: 0.468 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-832-8289, 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
K39253-4-5
NSN: 5310-00-832-8289
FSC: 5310
CAGE: R1120 — SATAIR A/S (DNK)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_styleROUND
temp_rating1200.0 FAHRENHEIT NOMINAL DEGF
nut_diameter0.620 INCHES NOMINAL IN
thread_class3B
nut_thickness0.468 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
hardness_rating28.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE ALL METAL DESIGN
special_features0.072 IN. MIN,0.084 IN. MAX SHOULDER OPPOSITE LOCKING PORTION IN
thread_directionRIGHT-HAND
precious_materialSILVER
NSN5310-00-832-8289
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: K39253-4-5 · 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: ROUND
•
THREAD QUANTITY PER INCH: 28
•
NUT COUNTERBORE DEPTH: 0.072 INCHES MINIMUM AND 0.084 INCHES MAXIMUM NUT IN
•
PRECIOUS MATERIAL: SILVER
•
SURFACE TREATMENT: SILVER OVERALL
•
COUNTERBORE DIAMETER: 0.264 INCHES MINIMUM AND 0.269 INCHES MAXIMUM NUT IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2411 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5736 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEROUND
THREAD QUANTITY PER INCH28
NUT COUNTERBORE DEPTH0.072 INCHES MINIMUM AND 0.084 INCHES MAXIMUM NUT IN
PRECIOUS MATERIALSILVER
SURFACE TREATMENTSILVER OVERALL
COUNTERBORE DIAMETER0.264 INCHES MINIMUM AND 0.269 INCHES MAXIMUM NUT IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2411 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5736 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING28.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
1300086Interchangeable
interchangeable cross-reference
interchangeable
PA7100BA70CA1Interchangeable
interchangeable cross-reference
interchangeable
323-0241Interchangeable
interchangeable cross-reference
interchangeable
1-300-086-01Interchangeable
Same NIIN cross-reference
interchangeable
ZL3155-5-048Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is K39253-4-5?
K39253-4-5 is a NUT,SELF-LOCKING,ROUND.
What parts can replace K39253-4-5?
There are 5 known substitutes for K39253-4-5: 1300086, PA7100BA70CA1, 323-0241 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for K39253-4-5?
K39253-4-5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-832-8289. 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