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821045 40 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

821045 40: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include fastener_length: 40.0 MILLIMETERS NOMINAL MM, thread_direction: RIGHT-HAND, end_item_identification: ENGINE, nominal_thread_diameter: 5.0 MILLIMETERS MM, external_thread_tolerance_class: 6G G. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-508-6260, 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
821045 40
NSN: 5305-01-508-6260
FSC: 5305 — Screws
CAGE: 1G604 — BRUNSWICK CORP MERCURY MARINE DIV GOVERNMENT SALES (USA)
SPECIFICATIONS
fastener_length40.0 MILLIMETERS NOMINAL MM
thread_directionRIGHT-HAND
end_item_identificationENGINE
nominal_thread_diameter5.0 MILLIMETERS MM
thread_series_designatorM
external_thread_tolerance_class6G G
NSN5305-01-508-6260
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 821045 40 · 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
•
EXTERNAL THREAD TOLERANCE CLASS: 6G G
•
FASTENER LENGTH: 40.0 MILLIMETERS NOMINAL MM
•
NOMINAL THREAD DIAMETER: 5.0 MILLIMETERS MM
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES DESIGNATOR: M
TECHNICAL CHARACTERISTICS
EXTERNAL THREAD TOLERANCE CLASS6G G
FASTENER LENGTH40.0 MILLIMETERS NOMINAL MM
NOMINAL THREAD DIAMETER5.0 MILLIMETERS MM
THREAD DIRECTIONRIGHT-HAND
END ITEM IDENTIFICATIONENGINE
THREAD SERIES DESIGNATORM
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 821045 40?
821045 40 is a SCREW,MACHINE.
What is the NSN for 821045 40?
821045 40 is cataloged in the U.S. Government catalog under NSN 5305-01-508-6260. 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.