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PartsTable / COMPONENT / KA565F
KA565F ✓ 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 PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, shank_length: 0.500 INCHES NOMINAL IN, overall_length: 5.125 INCHES NOMINAL IN, shank_diameter: 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, undercut_width: 0.062 INCHES NOMINAL IN, first_end_style: SQUARE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-227-7357, 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
KA565F
NSN: 5315-00-227-7357
FSC: 5315
CAGE: 80138 — KAY ELEMETRICS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
shank_length0.500 INCHES NOMINAL IN
overall_length5.125 INCHES NOMINAL IN
shank_diameter0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
undercut_width0.062 INCHES NOMINAL IN
first_end_styleSQUARE
second_end_styleCHAMFERED
special_featuresTHREADED SECOND STEP 5/16-32,45 DEGREE CHAMFER
shoulder_diameter0.375 INCHES NOMINAL IN
third_step_length1.750 INCHES NOMINAL IN
first_end_locationSQUARE END
second_step_length0.312 INCHES NOMINAL IN
NSN5315-00-227-7357
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: KA565F · 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
•
FIRST END STYLE: SQUARE
•
UNDERCUT WIDTH: 0.062 INCHES NOMINAL IN
•
SHANK LENGTH: 0.500 INCHES NOMINAL IN
•
SHANK DIAMETER: 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
SECOND END TAPER LENGTH: 0.188 INCHES NOMINAL IN
•
SECOND END STYLE: CHAMFERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: 303 18-8FM, FSCM 80138 MFR REF SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESTHREADED SECOND STEP 5/16-32,45 DEGREE CHAMFER
FIRST END STYLESQUARE
UNDERCUT WIDTH0.062 INCHES NOMINAL IN
SHANK LENGTH0.500 INCHES NOMINAL IN
SHANK DIAMETER0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
SECOND END TAPER LENGTH0.188 INCHES NOMINAL IN
SECOND END STYLECHAMFERED
MATERIAL DOCUMENT AND CLASSIFICATION303 18-8FM, FSCM 80138 MFR REF SINGLE MATERIAL RESPONSE OVERALL
SECOND END RELATIONSHIP WITH FIRST ENDNOT IDENTICAL
SHOULDER DIAMETER0.375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
21706Interchangeable
interchangeable cross-reference
interchangeable
52583Interchangeable
interchangeable cross-reference
interchangeable
31044Interchangeable
interchangeable cross-reference
interchangeable
565FInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is KA565F?
KA565F is a PIN,SHOULDER,HEADLESS.
What parts can replace KA565F?
There are 4 known substitutes for KA565F: 21706, 52583, 31044 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for KA565F?
KA565F is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-227-7357. 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