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Technical Data Sheet
PartsTable / COMPONENT / 44478
44478 ✓ 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 CUTTER,MILLING,END is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 6.40 MILLIMETERS NOMINAL MM, thread_length: 25.0 MILLIMETERS NOMINAL MM, fastener_length: 25.0 MILLIMETERS NOMINAL MM, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-579-5518, 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
44478
NSN: 5305-00-579-5518
FSC: 5305
CAGE: 11599 — TRIUMPH ENGINE CONTROL SYSTEMS LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height6.40 MILLIMETERS NOMINAL MM
thread_length25.0 MILLIMETERS NOMINAL MM
fastener_length25.0 MILLIMETERS NOMINAL MM
thread_directionRIGHT-HAND
width_between_flats19.87 MILLIMETERS NOMINAL MM
end_item_identificationMRAP BUFFALO MK2A2
nominal_thread_diameter10.0 MILLIMETERS MM
thread_series_designatorM
thread_pitch_in_millimeters1.5
external_thread_tolerance_classL6G
NSN5305-00-579-5518
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 44478 · 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
•
HOLE QUANTITY: 2
•
HOLE TYPE: DRILLED
•
WIDTH ACROSS FLATS: 0.221 INCHES NOMINAL IN
•
HEAD STYLE: FLAT CHAMFER
•
HOLE CONFIGURATION STYLE: ROUND LONGITUDINAL HOLE
•
HEAD DIAMETER: 0.438 INCHES NOMINAL IN
•
THREAD CLASS: 3A A
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
HOLE QUANTITY2
HOLE TYPEDRILLED
WIDTH ACROSS FLATS0.221 INCHES NOMINAL IN
HEAD STYLEFLAT CHAMFER
HOLE CONFIGURATION STYLEROUND LONGITUDINAL HOLE
HEAD DIAMETER0.438 INCHES NOMINAL IN
THREAD CLASS3A A
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SURFACE TREATMENTCADMIUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
400C-24Interchangeable
interchangeable cross-reference
interchangeable
44478Interchangeable
interchangeable cross-reference
interchangeable
12759-00704Interchangeable
interchangeable cross-reference
interchangeable
3006011Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 44478?
44478 is a CUTTER,MILLING,END.
What parts can replace 44478?
There are 4 known substitutes for 44478: 400C-24, 44478, 12759-00704 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 44478?
44478 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-579-5518. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026