PartsTable
Technical Data Sheet

M12C40KCS/D912-MAG — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

M12C40KCS/D912-MAG: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, fastener_length: 40.0 MILLIMETERS NOMINAL MM, end_item_identification: 3810015384030, nominal_thread_diameter: 12.0 MILLIMETERS MM, thread_pitch_in_millimeters: 1.75, part_name_assigned_by_controlling_agency: BOLT,CYLINDER HEAD. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-695-5286, 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
M12C40KCS/D912-MAG
NSN: 5306-01-695-5286
FSC: 5306 — Bolts
CAGE: 8Y757 — BIRMINGHAM FASTENER & SUPPLY INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
fastener_length40.0 MILLIMETERS NOMINAL MM
end_item_identification3810015384030
nominal_thread_diameter12.0 MILLIMETERS MM
thread_series_designatorM
thread_pitch_in_millimeters1.75
part_name_assigned_by_controlling_agencyBOLT,CYLINDER HEAD
NSN5306-01-695-5286
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: M12C40KCS/D912-MAG · 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
•
FASTENER LENGTH: 40.0 MILLIMETERS NOMINAL MM
•
THREAD PITCH IN MILLIMETERS: 1.75
•
NOMINAL THREAD DIAMETER: 12.0 MILLIMETERS MM
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: M
TECHNICAL CHARACTERISTICS
FASTENER LENGTH40.0 MILLIMETERS NOMINAL MM
THREAD PITCH IN MILLIMETERS1.75
NOMINAL THREAD DIAMETER12.0 MILLIMETERS MM
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT,CYLINDER HEAD
END ITEM IDENTIFICATION3810015384030
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORM
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 M12C40KCS/D912-MAG?
M12C40KCS/D912-MAG is a BOLT,CLOSE TOLERANCE.
What is the NSN for M12C40KCS/D912-MAG?
M12C40KCS/D912-MAG is cataloged in the U.S. Government catalog under NSN 5306-01-695-5286. 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.