PartsTable
Technical Data Sheet
AMS7478 ✓ 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, hole_type: DRILLED, head_style: DOUBLE HEXAGON W/HOLE, head_height: 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-020-3625, 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
AMS7478
NSN: 5305-00-020-3625
FSC: 5305
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
hole_typeDRILLED
head_styleDOUBLE HEXAGON W/HOLE
head_height0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
hole_diameter0.047 INCHES NOMINAL IN
hole_quantity4
thread_length0.303 INCHES MINIMUM AND 0.365 INCHES MAXIMUM IN
screw_materialIRON ALLOY 660
fastener_length0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
hardness_rating24.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL
NSN5305-00-020-3625
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AMS7478 · 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 SERIES DESIGNATOR: UNJC
HEAD DIAMETER: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH: 32
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
SPECIFICATION/STANDARD DATA: 80205-NAS1100 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE
THREAD LENGTH: 0.282 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
SCREW SURFACE TREATMENT: PASSIVATE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNJC
HEAD DIAMETER0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH32
NOMINAL THREAD DIAMETER0.138 INCHES IN
SPECIFICATION/STANDARD DATA80205-NAS1100 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE
THREAD LENGTH0.282 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTPASSIVATE
THREAD CLASS3A A
SCREW MATERIALIRON ALLOY 660
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
AMS7478Interchangeable
interchangeable cross-reference
interchangeable
NAS560HK3P15Interchangeable
interchangeable cross-reference
interchangeable
MS9033-11Interchangeable
interchangeable cross-reference
interchangeable
NAS560HK3-5Interchangeable
interchangeable cross-reference
interchangeable
5305PL0893107Interchangeable
interchangeable cross-reference
interchangeable
5305008024938Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AMS7478?
AMS7478 is a BOLT,MACHINE.
What parts can replace AMS7478?
There are 19 known substitutes for AMS7478: AMS7478, NAS560HK3P15, MS9033-11 and 16 more. Substitute compatibility should be verified for your specific system.
Is AMS7478 still available?
AMS7478 is currently cancelled.
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