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308537 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

308537: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, grip_length: 12.70 MILLIMETERS NOMINAL MM, thread_class: 2A A, thread_length: 25.40 MILLIMETERS NOMINAL MM, fastener_length: 38.10 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-161-5497, 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
308537
NSN: 5306-01-161-5497
FSC: 5306 — Bolts
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
grip_length12.70 MILLIMETERS NOMINAL MM
thread_class2A A
thread_length25.40 MILLIMETERS NOMINAL MM
fastener_length38.10 MILLIMETERS NOMINAL MM
locking_featurePATCH THREADS
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats14.29 MILLIMETERS NOMINAL MM
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch16
NSN5306-01-161-5497
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 308537 · 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
•
FASTENER LENGTH: 38.10 MILLIMETERS NOMINAL MM
•
THREAD LENGTH: 25.40 MILLIMETERS NOMINAL MM
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
GRIP LENGTH: 12.70 MILLIMETERS NOMINAL MM
•
WIDTH BETWEEN FLATS: 14.29 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
FASTENER LENGTH38.10 MILLIMETERS NOMINAL MM
THREAD LENGTH25.40 MILLIMETERS NOMINAL MM
NOMINAL THREAD DIAMETER0.375 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH12.70 MILLIMETERS NOMINAL MM
WIDTH BETWEEN FLATS14.29 MILLIMETERS NOMINAL MM
LOCKING FEATUREPATCH THREADS
THREAD CLASS2A A
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 308537?
308537 is a BOLT,MACHINE.
What is the NSN for 308537?
308537 is cataloged in the U.S. Government catalog under NSN 5306-01-161-5497. 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.