PartsTable
Technical Data Sheet
Download PDF

6860403 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

6860403: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, grip_length: 0.781 INCHES NOMINAL IN, head_height: 0.422 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.657 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-079-3496, 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
6860403
NSN: 5306-00-079-3496
FSC: 5306 — Bolts
CAGE: 73342 — ALLISON TRANSMISSION INC DBA ALLISON TRANSMISSION, INC (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
grip_length0.781 INCHES NOMINAL IN
head_height0.422 INCHES NOMINAL IN
thread_class3A A
thread_length0.657 INCHES MINIMUM IN
fastener_length1.438 INCHES NOMINAL IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats0.438 INCHES NOMINAL IN
nominal_thread_diameter0.375 INCHES IN
extended_washer_diameter0.562 INCHES NOMINAL IN
NSN5306-00-079-3496
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 6860403 · 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: 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.422 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.438 INCHES NOMINAL IN
•
EXTENDED WASHER DIAMETER: 0.562 INCHES NOMINAL IN
•
THREAD LENGTH: 0.657 INCHES MINIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5708 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
HEAD HEIGHT0.422 INCHES NOMINAL IN
FASTENER LENGTH1.438 INCHES NOMINAL IN
EXTENDED WASHER DIAMETER0.562 INCHES NOMINAL IN
THREAD LENGTH0.657 INCHES MINIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5708 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEDOUBLE HEXAGON 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
BLT8008Reference 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
Ready to buy 6860403?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 6860403?
6860403 is a BOLT,MACHINE.
What parts can replace 6860403?
There is 1 known substitute for 6860403: BLT8008. Substitute compatibility should be verified for your specific system.
What is the NSN for 6860403?
6860403 is cataloged in the U.S. Government catalog under NSN 5306-00-079-3496. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 6860403

✓ 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.