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502680 — BOLT,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

502680: BOLT,EXTERNALLY RELIEVED BODY.

The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740 OVERALL, head_style: HEXAGON EXTENDED WASHER, head_height: 0.620 INCHES NOMINAL IN, thread_length: 1.090 INCHES MINIMUM AND 1.120 INCHES MAXIMUM IN, fastener_length: 1.780 INCHES MINIMUM AND 1.810 INCHES MAXIMUM IN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-776-7530, 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
502680
NSN: 5306-00-776-7530
FSC: 5306 — Bolts
CAGE: 02978 — RENK AMERICA LLC DIV RENK AMERICA (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 OVERALL
head_styleHEXAGON EXTENDED WASHER
head_height0.620 INCHES NOMINAL IN
thread_length1.090 INCHES MINIMUM AND 1.120 INCHES MAXIMUM IN
fastener_length1.780 INCHES MINIMUM AND 1.810 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
width_between_flats0.615 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN
extended_washer_diameter0.840 INCHES NOMINAL IN
first_diameter_from_head0.562 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN
thread_series_designatorUNF
extended_washer_thickness0.250 INCHES NOMINAL IN
second_diameter_from_head0.440 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN
NSN5306-00-776-7530
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 502680 · 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: 0.250 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.620 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.780 INCHES MINIMUM AND 1.810 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.840 INCHES NOMINAL IN
•
THREAD LENGTH: 1.090 INCHES MINIMUM AND 1.120 INCHES MAXIMUM IN
•
FIRST DIAMETER FROM HEAD: 0.562 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER: 0.690 INCHES NOMINAL IN
•
HEAD STYLE: HEXAGON EXTENDED WASHER
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.250 INCHES NOMINAL IN
HEAD HEIGHT0.620 INCHES NOMINAL IN
FASTENER LENGTH1.780 INCHES MINIMUM AND 1.810 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.840 INCHES NOMINAL IN
THREAD LENGTH1.090 INCHES MINIMUM AND 1.120 INCHES MAXIMUM IN
FIRST DIAMETER FROM HEAD0.562 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER0.690 INCHES NOMINAL IN
HEAD STYLEHEXAGON EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
SECOND DIAMETER FROM HEAD0.440 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
SUBSTITUTES & CROSS-REFERENCES 2
7767530Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2300094-010410.05.0Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 502680?
502680 is a BOLT,EXTERNALLY RELIEVED BODY.
What parts can replace 502680?
There are 2 known substitutes for 502680: 7767530, 2300094-010410.05.0. Substitute compatibility should be verified for your specific system.
What is the NSN for 502680?
502680 is cataloged in the U.S. Government catalog under NSN 5306-00-776-7530. 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.