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AS9494 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AS9494: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, head_style: HEXAGON, grip_length: 0.105 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN, head_height: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.4950 INCHES MINIMUM AND 0.4990 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-188-9631, 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
AS9494
NSN: 5306-01-188-9631
FSC: 5306 — Bolts
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
head_styleHEXAGON
grip_length0.105 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
head_height0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.4950 INCHES MINIMUM AND 0.4990 INCHES MAXIMUM IN
thread_length0.947 INCHES NOMINAL IN
surface_finish32.0 MICROINCHES BEARING SURFACE OF HEAD
fastener_length1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
width_between_flats0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
nominal_thread_diameter0.500 INCHES IN
NSN5306-01-188-9631
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AS9494 · 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
•
SURFACE FINISH: 32.0 MICROINCHES THREADS
•
HEAD HEIGHT: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.947 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES THREADS
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
HEAD HEIGHT0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
FASTENER LENGTH1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN
THREAD LENGTH0.947 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES 1
MS9494-08Reference 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 AS9494?
AS9494 is a BOLT,CLOSE TOLERANCE.
What parts can replace AS9494?
There is 1 known substitute for AS9494: MS9494-08. Substitute compatibility should be verified for your specific system.
What is the NSN for AS9494?
AS9494 is cataloged in the U.S. Government catalog under NSN 5306-01-188-9631. 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.