PartsTable
Technical Data Sheet
AS7478 ✓ 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: IRON ALLOY 660 OVERALL, head_style: HEXAGON, grip_length: 0.535 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN, head_height: 0.531 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 1.451 INCHES MINIMUM AND 1.511 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-340-5424, 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
AS7478
NSN: 5305-00-340-5424
FSC: 5305
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
head_styleHEXAGON
grip_length0.535 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
head_height0.531 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN
thread_class3A A
thread_length1.451 INCHES MINIMUM AND 1.511 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES THREADS
fastener_length3.154 INCHES MINIMUM AND 3.184 INCHES MAXIMUM IN
hardness_rating24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentPASSIVATE OVERALL
NSN5305-00-340-5424
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AS7478 · 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
THREAD CLASS: 3A A
COUNTERSINK ANGLE: 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
SURFACE FINISH: 32.0 MICROINCHES BEARING SURFACE OF HEAD
MINIMUM TENSILE STRENGTH: 160000 POUNDS PER SQUARE INCH LBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL: IRON ALLOY 660 OVERALL
THREAD QUANTITY PER INCH: 32
LOCKING FEATURE: PATCH OR PELLET OR STRIP THREADS
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3A A
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH LBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIALIRON ALLOY 660 OVERALL
THREAD QUANTITY PER INCH32
LOCKING FEATUREPATCH OR PELLET OR STRIP THREADS
NOMINAL THREAD DIAMETER0.138 INCHES IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
LL57U40J6MInterchangeable
interchangeable cross-reference
interchangeable
61511800524Interchangeable
interchangeable cross-reference
interchangeable
910060-0406Interchangeable
interchangeable cross-reference
interchangeable
2585164Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-18240Interchangeable
interchangeable cross-reference
interchangeable
FFS92Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS7478?
AS7478 is a BOLT,MACHINE.
What parts can replace AS7478?
There are 21 known substitutes for AS7478: LL57U40J6M, 61511800524, 910060-0406 and 18 more. Substitute compatibility should be verified for your specific system.
Is AS7478 still available?
AS7478 is currently cancelled.
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