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645639 — SCREW,CARBURETOR AD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

645639: SCREW,CARBURETOR AD.

The SCREW,CARBURETOR AD is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5305-00-366-6546, 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
645639
NSN: 5305-00-366-6546
FSC: 5305 — Screws
CAGE: 12204 — CHRYSLER REALTY COMPANY LLC DBA DAIMLER CHRYSLER (USA)
SPECIFICATIONS
Part Number645639
NSN5305-00-366-6546
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 645639 · 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
SUBSTITUTES & CROSS-REFERENCES 6
68469R1Reference document
Same NSN cross-reference
Reference document — Secondary reference
644928Reference document
Same NSN cross-reference
Reference document — Secondary reference
30A37Reference document
Same NSN cross-reference
Reference document — Secondary reference
852705Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
56297Reference document
Same NSN cross-reference
Reference document — Secondary reference
16-5Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 645639?
645639 is a SCREW,CARBURETOR AD.
What parts can replace 645639?
There are 6 known substitutes for 645639: 68469R1, 644928, 30A37 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 645639?
645639 is cataloged in the U.S. Government catalog under NSN 5305-00-366-6546. 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.