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Technical Data Sheet
PartsTable / COMPONENT / 678576
678576 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include end_item_identification: KC-46 AIRCRAFT, reference_number_differentiating_characteristics: ITEM IS FAA CERTIFIED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-366-6548, 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
678576
NSN: 5305-00-366-6548
FSC: 5305
CAGE: 71500 — ACF INDUSTRIES INC CARTER CARBURETOR DIV
SPECIFICATIONS
end_item_identificationKC-46 AIRCRAFT
reference_number_differentiating_characteristicsITEM IS FAA CERTIFIED
NSN5305-00-366-6548
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 678576 · 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
•
SCREW MATERIAL: COPPER ALLOY
•
THREAD DIRECTION: RIGHT-HAND
•
FASTENER LENGTH: 0.250 INCHES NOMINAL IN
•
THREAD LENGTH: 0.250 INCHES MINIMUM IN
•
INTERNAL DRIVE STYLE: SLOT
•
THREAD CLASS: 2A A
•
THREAD QUANTITY PER INCH: 48
•
SCREW SURFACE TREATMENT: ZINC OR CADMIUM
TECHNICAL CHARACTERISTICS (FLIS)
SCREW MATERIALCOPPER ALLOY
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH0.250 INCHES NOMINAL IN
THREAD LENGTH0.250 INCHES MINIMUM IN
INTERNAL DRIVE STYLESLOT
THREAD CLASS2A A
THREAD QUANTITY PER INCH48
SCREW SURFACE TREATMENTZINC OR CADMIUM
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
HEAD STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
3911Interchangeable
interchangeable cross-reference
interchangeable
308437C1Interchangeable
interchangeable cross-reference
interchangeable
CV2031340-8301VEQPC49Interchangeable
interchangeable cross-reference
interchangeable
201-365PC70Interchangeable
interchangeable cross-reference
interchangeable
201-370PC49Interchangeable
interchangeable cross-reference
interchangeable
SCOTCHCAL 3911Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 678576?
678576 is a SCREW,MACHINE.
What parts can replace 678576?
There are 19 known substitutes for 678576: 3911, 308437C1, CV2031340-8301VEQPC49 and 16 more. Substitute compatibility should be verified for your specific system.
Is 678576 still available?
678576 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026