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Technical Data Sheet
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8T4779 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

8T4779: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, grip_length: 4.0 MILLIMETERS NOMINAL MM, head_height: 10.0 MILLIMETERS NOMINAL MM, thread_length: 31.0 MILLIMETERS NOMINAL MM, fastener_length: 35.0 MILLIMETERS NOMINAL MM, special_features: ZINC DICHROMATE PLATED. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-429-3176, 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
8T4779
NSN: 5306-01-429-3176
FSC: 5306 — Bolts
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
head_styleHEXAGON
grip_length4.0 MILLIMETERS NOMINAL MM
head_height10.0 MILLIMETERS NOMINAL MM
thread_length31.0 MILLIMETERS NOMINAL MM
fastener_length35.0 MILLIMETERS NOMINAL MM
special_featuresZINC DICHROMATE PLATED
width_between_flats24.0 MILLIMETERS NOMINAL MM
end_item_identificationCATERPILLAR 953B ENGINE
nominal_thread_diameter16.0 MILLIMETERS MM
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
thread_pitch_in_millimeters2.0
NSN5306-01-429-3176
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 8T4779 · 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: 10.0 MILLIMETERS NOMINAL MM
•
FASTENER LENGTH: 35.0 MILLIMETERS NOMINAL MM
•
THREAD PITCH IN MILLIMETERS: 2.0
•
THREAD LENGTH: 31.0 MILLIMETERS NOMINAL MM
•
NOMINAL THREAD DIAMETER: 16.0 MILLIMETERS MM
•
HEAD STYLE: HEXAGON
•
GRIP LENGTH: 4.0 MILLIMETERS NOMINAL MM
•
WIDTH BETWEEN FLATS: 24.0 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
HEAD HEIGHT10.0 MILLIMETERS NOMINAL MM
FASTENER LENGTH35.0 MILLIMETERS NOMINAL MM
THREAD PITCH IN MILLIMETERS2.0
THREAD LENGTH31.0 MILLIMETERS NOMINAL MM
NOMINAL THREAD DIAMETER16.0 MILLIMETERS MM
HEAD STYLEHEXAGON
GRIP LENGTH4.0 MILLIMETERS NOMINAL MM
WIDTH BETWEEN FLATS24.0 MILLIMETERS NOMINAL MM
SPECIAL FEATURESZINC DICHROMATE PLATED
END ITEM IDENTIFICATIONCATERPILLAR 953B ENGINE
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8T4779?
8T4779 is a BOLT,MACHINE.
What is the NSN for 8T4779?
8T4779 is cataloged in the U.S. Government catalog under NSN 5306-01-429-3176. This indicates validated use in U.S. government and defense supply chains.
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