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1AX125 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

1AX125: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, grip_length: 2.500 INCHES NOMINAL IN, thread_class: 2A A, grip_diameter: 0.500 INCHES NOMINAL IN, thread_length: 1.250 INCHES NOMINAL IN, fastener_length: 3.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-554-5788, 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
1AX125
NSN: 5306-01-554-5788
FSC: 5306 — Bolts
CAGE: 89619 — MACK TRUCKS, INC. DBA MACUNGIE OPERATIONS DIV LEHIGH VALLEY OPERATIONS (USA)
SPECIFICATIONS
head_styleHEXAGON
grip_length2.500 INCHES NOMINAL IN
thread_class2A A
grip_diameter0.500 INCHES NOMINAL IN
thread_length1.250 INCHES NOMINAL IN
fastener_length3.750 INCHES NOMINAL IN
thread_directionRIGHT-HAND
end_item_identificationMACK TRUCKS
thread_quantity_per_inch20
thread_series_designatorUNF
part_name_assigned_by_controlling_agencyGRADE 5 FINISHED HEXAGON BOLT
NSN5306-01-554-5788
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1AX125 · 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: 3.750 INCHES NOMINAL IN
•
THREAD LENGTH: 1.250 INCHES NOMINAL IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
GRIP LENGTH: 2.500 INCHES NOMINAL IN
•
GRIP DIAMETER: 0.500 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS
FASTENER LENGTH3.750 INCHES NOMINAL IN
THREAD LENGTH1.250 INCHES NOMINAL IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH2.500 INCHES NOMINAL IN
GRIP DIAMETER0.500 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYGRADE 5 FINISHED HEXAGON BOLT
THREAD CLASS2A A
END ITEM IDENTIFICATIONMACK TRUCKS
THREAD QUANTITY PER INCH20
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 1AX125?
1AX125 is a BOLT,MACHINE.
What is the NSN for 1AX125?
1AX125 is cataloged in the U.S. Government catalog under NSN 5306-01-554-5788. 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.