PartsTable
Technical Data Sheet
AN178H52 ✓ 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,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, grip_length: 4.562 INCHES NOMINAL IN, head_height: 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.781 INCHES MINIMUM 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 5306-00-151-1777, 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
AN178H52
NSN: 5306-00-151-1777
FSC: 5306
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
grip_length4.562 INCHES NOMINAL IN
head_height0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN
thread_class3A A
thread_length0.781 INCHES MINIMUM IN
fastener_length5.344 INCHES NOMINAL IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
special_featuresONE DRILLED HOLE IN HEAD
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentCADMIUM OVERALL
NSN5306-00-151-1777
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN178H52 · 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
HEAD STYLE: HEXAGON
THREAD LENGTH: 0.781 INCHES MINIMUM IN
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER: 5.172 INCHES NOMINAL FIRST HOLE IN
THREAD CLASS: 3A A
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
THREAD QUANTITY PER INCH: 20
WIDTH BETWEEN FLATS: 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
HEAD STYLEHEXAGON
THREAD LENGTH0.781 INCHES MINIMUM IN
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER5.172 INCHES NOMINAL FIRST HOLE IN
THREAD CLASS3A A
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
SPECIAL FEATURESONE DRILLED HOLE IN HEAD
THREAD QUANTITY PER INCH20
WIDTH BETWEEN FLATS0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.500 INCHES IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
88T52Interchangeable
Dell 240GB Enterprise 6G 2.5inch Ri SATA SSD
interchangeable
B6812AInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN178H52?
AN178H52 is a BOLT,MACHINE.
What parts can replace AN178H52?
There are 2 known substitutes for AN178H52: 88T52, B6812A. Substitute compatibility should be verified for your specific system.
What is the NSN for AN178H52?
AN178H52 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-151-1777. This indicates validated use in U.S. government and defense supply chains.
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