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B486440 — BOLT,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

B486440: BOLT,EXTERNALLY RELIEVED BODY.

The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: ROUND W/WRENCH FLATS, head_height: 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.605 INCHES MINIMUM AND 0.615 INCHES MAXIMUM IN, thread_length: 0.700 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-166-4536, 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
B486440
NSN: 5306-01-166-4536
FSC: 5306 — Bolts
CAGE: K0378 — ROLLS-ROYCE PLC DIV DEFENSE (EUROPE) (GBR)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleROUND W/WRENCH FLATS
head_height0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.605 INCHES MINIMUM AND 0.615 INCHES MAXIMUM IN
thread_length0.700 INCHES NOMINAL IN
fastener_length1.930 INCHES NOMINAL IN
special_featuresEXTERNALLY RELIEVED BODIES ROUNDED 0.150 IN. RADIUS ON BOTH ENDS OF EACH DIA IN
thread_directionRIGHT-HAND
width_between_flats0.483 INCHES NOMINAL IN
nominal_thread_diameter0.312 INCHES IN
first_diameter_from_head0.235 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN
NSN5306-01-166-4536
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: B486440 · 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: 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.930 INCHES NOMINAL IN
•
THREAD LENGTH: 0.700 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MSRR6001,FSCM K0378 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
FIRST DIAMETER FROM HEAD: 0.235 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER: 1.190 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
HEAD STYLE: ROUND W/WRENCH FLATS
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
FASTENER LENGTH1.930 INCHES NOMINAL IN
THREAD LENGTH0.700 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMSRR6001,FSCM K0378 MFR REF SINGLE MATERIAL RESPONSE OVERALL
FIRST DIAMETER FROM HEAD0.235 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER1.190 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.312 INCHES IN
HEAD STYLEROUND W/WRENCH FLATS
THREAD DIRECTIONRIGHT-HAND
SECOND DIAMETER FROM HEAD0.235 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN
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

No substitute or cross-reference records for this part.

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 B486440?
B486440 is a BOLT,EXTERNALLY RELIEVED BODY.
What is the NSN for B486440?
B486440 is cataloged in the U.S. Government catalog under NSN 5306-01-166-4536. 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.