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7407641 — BOLT,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

7407641: BOLT,EXTERNALLY RELIEVED BODY.

The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1340 OR STEEL COMP 4140 OR STEEL COMP 8640 OR STEEL COMP 8740 OVERALL, head_style: DISHED HEXAGON, head_height: 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.796 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN, fastener_length: 2.609 INCHES MINIMUM AND 2.641 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-740-7641, 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
7407641
NSN: 5306-00-740-7641
FSC: 5306 — Bolts
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1340 OR STEEL COMP 4140 OR STEEL COMP 8640 OR STEEL COMP 8740 OVERALL
head_styleDISHED HEXAGON
head_height0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
thread_class3A A
thread_length0.796 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN
fastener_length2.609 INCHES MINIMUM AND 2.641 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC OVERALL
width_between_flats1.108 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
nominal_thread_diameter0.875 INCHES IN
first_diameter_from_head0.870 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
thread_quantity_per_inch14
NSN5306-00-740-7641
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 7407641 · 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: 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.609 INCHES MINIMUM AND 2.641 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.796 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN
•
FIRST DIAMETER FROM HEAD: 0.870 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER: 1.781 INCHES MINIMUM AND 1.845 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.875 INCHES IN
•
HEAD STYLE: DISHED HEXAGON
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
FASTENER LENGTH2.609 INCHES MINIMUM AND 2.641 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL
THREAD LENGTH0.796 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN
FIRST DIAMETER FROM HEAD0.870 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER1.781 INCHES MINIMUM AND 1.845 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.875 INCHES IN
HEAD STYLEDISHED HEXAGON
THREAD DIRECTIONRIGHT-HAND
SECOND DIAMETER FROM HEAD0.767 INCHES MINIMUM AND 0.777 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
K1467Reference document
Same NSN cross-reference
Reference document — NATO reproduction reference
5306007407641Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7407641?
7407641 is a BOLT,EXTERNALLY RELIEVED BODY.
What parts can replace 7407641?
There are 2 known substitutes for 7407641: K1467, 5306007407641. Substitute compatibility should be verified for your specific system.
What is the NSN for 7407641?
7407641 is cataloged in the U.S. Government catalog under NSN 5306-00-740-7641. 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.