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KC6579 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
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PRODUCT OVERVIEW

PIN,VEHICULAR LEAF SPRING SHACKL. Key specifications include material: STEEL OVERALL, pin_diameter: 1.120 INCHES MINIMUM AND 1.121 INCHES MAXIMUM IN, style_designator: PIN TYPE, COUNTERBORE, FLAT HEAD, features_provided: CASEHARDENED, pin_overall_length: 4.875 INCHES NOMINAL IN, concentric_hole_depth: 2.625 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2510-00-741-2376, 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
KC6579
NSN: 2510-00-741-2376
FSC: 2510
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
pin_diameter1.120 INCHES MINIMUM AND 1.121 INCHES MAXIMUM IN
style_designatorPIN TYPE, COUNTERBORE, FLAT HEAD
features_providedCASEHARDENED
pin_overall_length4.875 INCHES NOMINAL IN
concentric_hole_depth2.625 INCHES NOMINAL IN
concentric_hole_diameter0.343 INCHES NOMINAL IN
material_hardness_rating49.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM
first_locking_groove_depth0.184 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
first_locking_groove_width0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
material_document_and_classificationFED STD 66,AISI 01015 TO C 1025 OR SAE 1015 TO 1025 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN2510-00-741-2376
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PIN,VEHICULAR LEAF SPRING SHACKL TITLE COMPONENT PN KC6579 MFR PIN,VEHICULAR LEAF SPR
KEY FEATURES
•
MATERIAL HARDNESS RATING: 49.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM
•
CONCENTRIC HOLE DEPTH: 2.625 INCHES NOMINAL IN
•
FIRST LOCKING GROOVE DEPTH: 0.184 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
•
CONCENTRIC HOLE DIAMETER: 0.343 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
FIRST LOCKING GROOVE WIDTH: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
PIN OVERALL LENGTH: 4.875 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66,AISI 01015 TO C 1025 OR SAE 1015 TO 1025 FED STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL HARDNESS RATING49.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM
CONCENTRIC HOLE DEPTH2.625 INCHES NOMINAL IN
FIRST LOCKING GROOVE DEPTH0.184 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
CONCENTRIC HOLE DIAMETER0.343 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
FIRST LOCKING GROOVE WIDTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
PIN OVERALL LENGTH4.875 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66,AISI 01015 TO C 1025 OR SAE 1015 TO 1025 FED STD SINGLE MATERIAL RESPONSE OVERALL
FEATURES PROVIDEDCASEHARDENED
STYLE DESIGNATORPIN TYPE, COUNTERBORE, FLAT HEAD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
0450Interchangeable
interchangeable cross-reference
interchangeable
9450Interchangeable
interchangeable cross-reference
interchangeable
101-107-284Interchangeable
interchangeable cross-reference
interchangeable
0450WDInterchangeable
interchangeable cross-reference
interchangeable
004500-0610-110Interchangeable
interchangeable cross-reference
interchangeable
802027381628-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is KC6579?
KC6579 is a PIN,VEHICULAR LEAF SPRING SHACKL.
What parts can replace KC6579?
There are 10 known substitutes for KC6579: 0450, 9450, 101-107-284 and 7 more. Substitute compatibility should be verified for your specific system.
Is KC6579 still available?
KC6579 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026