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Technical Data Sheet
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SC278-9 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

SC278-9: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, end_item_identification: THREAT EMITTE, nominal_thread_diameter: 6.0 INCHES IN, part_name_assigned_by_controlling_agency: DETAILS-SCREW MODIFICATION TOP COVER SCREW. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-601-9255, 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
SC278-9
NSN: 5305-01-601-9255
FSC: 5305 — Screws
CAGE: 3Z966 — APPLIED SYSTEMS ENGINEERING INC (USA)
SPECIFICATIONS
head_styleHEXAGON
end_item_identificationTHREAT EMITTE
nominal_thread_diameter6.0 INCHES IN
part_name_assigned_by_controlling_agencyDETAILS-SCREW MODIFICATION TOP COVER SCREW
NSN5305-01-601-9255
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SC278-9 · 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: 6.0 INCHES IN
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
NOMINAL THREAD DIAMETER6.0 INCHES IN
HEAD STYLEHEXAGON
PART NAME ASSIGNED BY CONTROLLING AGENCYDETAILS-SCREW MODIFICATION TOP COVER SCREW
END ITEM IDENTIFICATIONTHREAT EMITTE
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 SC278-9?
SC278-9 is a SCREW,MACHINE.
What is the NSN for SC278-9?
SC278-9 is cataloged in the U.S. Government catalog under NSN 5305-01-601-9255. 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.