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SA639AS10749-3 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

SA639AS10749-3: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OVERALL, head_style: HEXAGON EXTENDED WASHER, head_height: 0.625 INCHES NOMINAL IN, thread_class: 2G G, thread_length: 1.760 INCHES NOMINAL IN, fastener_length: 2.730 INCHES MINIMUM AND 2.790 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-481-9806, 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
SA639AS10749-3
NSN: 5306-01-481-9806
FSC: 5306 — Bolts
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP E4340 OVERALL
head_styleHEXAGON EXTENDED WASHER
head_height0.625 INCHES NOMINAL IN
thread_class2G G
thread_length1.760 INCHES NOMINAL IN
fastener_length2.730 INCHES MINIMUM AND 2.790 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentLUBRICANT OVERALL
width_between_flats0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
end_item_identificationAIM9L/M MISSILE
nominal_thread_diameter0.500 INCHES IN
extended_washer_diameter0.970 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN
NSN5306-01-481-9806
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SA639AS10749-3 · 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: 0.060 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.625 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.730 INCHES MINIMUM AND 2.790 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-46010,TYPE III MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.970 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.760 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE-AMS-S-5000 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.060 INCHES NOMINAL IN
HEAD HEIGHT0.625 INCHES NOMINAL IN
FASTENER LENGTH2.730 INCHES MINIMUM AND 2.790 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-46010,TYPE III MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.970 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN
THREAD LENGTH1.760 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE-AMS-S-5000 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEHEXAGON EXTENDED WASHER
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
639AS10749-3Reference 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 SA639AS10749-3?
SA639AS10749-3 is a BOLT,MACHINE.
What parts can replace SA639AS10749-3?
There is 1 known substitute for SA639AS10749-3: 639AS10749-3. Substitute compatibility should be verified for your specific system.
What is the NSN for SA639AS10749-3?
SA639AS10749-3 is cataloged in the U.S. Government catalog under NSN 5306-01-481-9806. 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.