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1KK640 — SETSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

1KK640: SETSCREW.

The SETSCREW is a the manufacturer industrial component. Key specifications include thread_direction: LEFT-HAND, end_item_identification: 2320-01-465-2260, nominal_thread_diameter: 0.375 INCHES IN, thread_quantity_per_inch: 16, thread_series_designator: UNIFIED NATIONAL COARSE (UNC), part_name_assigned_by_controlling_agency: SETSCREW, SOCKET HEAD. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-517-0249, 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
1KK640
NSN: 5305-01-517-0249
FSC: 5305 — Screws
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
thread_directionLEFT-HAND
end_item_identification2320-01-465-2260
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch16
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
part_name_assigned_by_controlling_agencySETSCREW, SOCKET HEAD
NSN5305-01-517-0249
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1KK640 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
THREAD DIRECTION: LEFT-HAND
•
THREAD QUANTITY PER INCH: 16
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS
NOMINAL THREAD DIAMETER0.375 INCHES IN
THREAD DIRECTIONLEFT-HAND
PART NAME ASSIGNED BY CONTROLLING AGENCYSETSCREW, SOCKET HEAD
END ITEM IDENTIFICATION2320-01-465-2260
THREAD QUANTITY PER INCH16
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SUBSTITUTES & CROSS-REFERENCES 1
1362Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1KK640?
1KK640 is a SETSCREW.
What parts can replace 1KK640?
There is 1 known substitute for 1KK640: 1362. Substitute compatibility should be verified for your specific system.
What is the NSN for 1KK640?
1KK640 is cataloged in the U.S. Government catalog under NSN 5305-01-517-0249. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.