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Technical Data Sheet
PartsTable / COMPONENT / MS24678-3
MS24678-3 ✓ 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 BOLT,INTERNAL WRENCHING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_type: DRILLED, head_height: 0.134 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.218 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN, hole_diameter: 0.036 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-066-8539, 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
MS24678-3
NSN: 5306-00-066-8539
FSC: 5306
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
hole_typeDRILLED
head_height0.134 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.218 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
hole_diameter0.036 INCHES NOMINAL IN
hole_quantity1
thread_length0.420 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
fastener_length0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
hardness_rating38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
NSN5306-00-066-8539
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS24678-3 · 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 TYPE: DRILLED
•
HOLE DIAMETER: 0.036 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNF
•
HOLE CONFIGURATION STYLE: HEXAGON FLATS
•
MATERIAL: STEEL OVERALL
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
THREAD LENGTH: 0.420 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
HOLE TYPEDRILLED
HOLE DIAMETER0.036 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNF
HOLE CONFIGURATION STYLEHEXAGON FLATS
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.138 INCHES IN
THREAD LENGTH0.420 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH40
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
090-45099C8-9Upgraded Successor
successor cross-reference
successor
FFS86Upgraded Successor
successor cross-reference
successor
090-45099C8-8Upgraded Successor
successor cross-reference
successor
3-11946Interchangeable
interchangeable cross-reference
interchangeable
MS24675-3Interchangeable
Same NIIN cross-reference
interchangeable
MS24678-3CInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS24678-3?
MS24678-3 is a BOLT,INTERNAL WRENCHING.
What parts can replace MS24678-3?
There are 6 known substitutes for MS24678-3: 090-45099C8-9, FFS86, 090-45099C8-8 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS24678-3?
MS24678-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-066-8539. 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