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6840383-13 — BOLT,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

6840383-13: BOLT,EXTERNALLY RELIEVED BODY.

The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: DEE CHAMFER, head_height: 0.156 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.531 INCHES NOMINAL IN, thread_length: 0.562 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-059-3843, 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
6840383-13
NSN: 5306-00-059-3843
FSC: 5306 — Bolts
CAGE: 63005 — ROLLS-ROYCE CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleDEE CHAMFER
head_height0.156 INCHES NOMINAL IN
thread_class3A A
head_diameter0.531 INCHES NOMINAL IN
thread_length0.562 INCHES MINIMUM IN
fastener_length0.812 INCHES NOMINAL IN
hardness_rating34.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
nominal_thread_diameter0.250 INCHES IN
first_diameter_from_head0.221 INCHES MINIMUM AND 0.231 INCHES MAXIMUM IN
NSN5306-00-059-3843
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 6840383-13 · 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
•
HEAD HEIGHT: 0.156 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.812 INCHES NOMINAL IN
•
DISTANCE FROM CENTERLINE TO FLAT: 0.127 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.562 INCHES MINIMUM IN
•
HARDNESS RATING: 34.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
•
FIRST DIAMETER FROM HEAD: 0.221 INCHES MINIMUM AND 0.231 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER: 0.250 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.156 INCHES NOMINAL IN
FASTENER LENGTH0.812 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE TO FLAT0.127 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN
THREAD LENGTH0.562 INCHES MINIMUM IN
HARDNESS RATING34.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
FIRST DIAMETER FROM HEAD0.221 INCHES MINIMUM AND 0.231 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER0.250 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEDEE CHAMFER
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
5306PL2033451Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6840383-13?
6840383-13 is a BOLT,EXTERNALLY RELIEVED BODY.
What parts can replace 6840383-13?
There is 1 known substitute for 6840383-13: 5306PL2033451. Substitute compatibility should be verified for your specific system.
What is the NSN for 6840383-13?
6840383-13 is cataloged in the U.S. Government catalog under NSN 5306-00-059-3843. 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.