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7979424 — BOLT,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

7979424: BOLT,EXTERNALLY RELIEVED BODY.

The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020 OVERALL, head_style: HEXAGON, head_height: 0.318 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.000 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN, fastener_length: 5.031 INCHES MINIMUM AND 5.062 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-792-7359, 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
7979424
NSN: 5306-00-792-7359
FSC: 5306 — Bolts
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OVERALL
head_styleHEXAGON
head_height0.318 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
thread_class2A A
thread_length1.000 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
fastener_length5.031 INCHES MINIMUM AND 5.062 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
width_between_flats0.646 INCHES MINIMUM AND 0.666 INCHES MAXIMUM IN
nominal_thread_diameter0.438 INCHES IN
first_diameter_from_head0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
thread_quantity_per_inch14
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5306-00-792-7359
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 7979424 · 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: 0.318 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
•
FASTENER LENGTH: 5.031 INCHES MINIMUM AND 5.062 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.000 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
•
FIRST DIAMETER FROM HEAD: 0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER: 3.906 INCHES MINIMUM AND 4.062 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.438 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.318 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
FASTENER LENGTH5.031 INCHES MINIMUM AND 5.062 INCHES MAXIMUM IN
THREAD LENGTH1.000 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
FIRST DIAMETER FROM HEAD0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER3.906 INCHES MINIMUM AND 4.062 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.438 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
SECOND DIAMETER FROM HEAD0.385 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.646 INCHES MINIMUM AND 0.666 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 7979424?
7979424 is a BOLT,EXTERNALLY RELIEVED BODY.
What is the NSN for 7979424?
7979424 is cataloged in the U.S. Government catalog under NSN 5306-00-792-7359. 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.