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AS3580-4-25 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AS3580-4-25: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, grip_length: 0.6810 INCHES MINIMUM IN, head_height: 0.2930 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN, thread_class: 3A A, chamfer_angle: 28.0 DEGREES MINIMUM AND 32.0 DEGREES MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-661-1144, 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
AS3580-4-25
NSN: 5306-01-661-1144
FSC: 5306 — Bolts
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialNICKEL ALLOY 718 OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
grip_length0.6810 INCHES MINIMUM IN
head_height0.2930 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN
thread_class3A A
chamfer_angle28.0 DEGREES MINIMUM AND 32.0 DEGREES MAXIMUM
grip_diameter0.2220 INCHES MINIMUM AND 0.2320 INCHES MAXIMUM IN
thread_length0.8710 INCHES MINIMUM AND 0.8910 INCHES MAXIMUM IN
fastener_length1.5520 INCHES MINIMUM AND 1.5720 INCHES MAXIMUM IN
special_featuresNEXT HIGHER ASSEMBLY IS LIFTFAN ASSEMBLY MODULE
thread_directionRIGHT-HAND
width_between_flats0.3125 INCHES NOMINAL IN
NSN5306-01-661-1144
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AS3580-4-25 · 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
•
EXTENDED WASHER THICKNESS: 0.1580 INCHES MINIMUM IN
•
HEAD HEIGHT: 0.2930 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.5520 INCHES MINIMUM AND 1.5720 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.4280 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.8710 INCHES MINIMUM AND 0.8910 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.2500 INCHES IN
•
HEAD STYLE: DOUBLE HEXAGON EXTENDED WASHER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.1580 INCHES MINIMUM IN
HEAD HEIGHT0.2930 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN
FASTENER LENGTH1.5520 INCHES MINIMUM AND 1.5720 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.4280 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN
THREAD LENGTH0.8710 INCHES MINIMUM AND 0.8910 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.2500 INCHES IN
HEAD STYLEDOUBLE HEXAGON EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH0.6810 INCHES MINIMUM IN
WIDTH BETWEEN FLATS0.3125 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
AS3580Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS3580-4-25?
AS3580-4-25 is a BOLT,MACHINE.
What parts can replace AS3580-4-25?
There is 1 known substitute for AS3580-4-25: AS3580. Substitute compatibility should be verified for your specific system.
What is the NSN for AS3580-4-25?
AS3580-4-25 is cataloged in the U.S. Government catalog under NSN 5306-01-661-1144. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.