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400AX12 — BOLT,ASSEMBLED WASHER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

400AX12: BOLT,ASSEMBLED WASHER.

The BOLT,ASSEMBLED WASHER is a the manufacturer industrial component. Key specifications include fastener_length: 0.620 INCHES NOMINAL IN, special_features: FINISH ZINC PLATE AND CLEAR CHROMATE PER MACK SPECIFICATION, thread_direction: RIGHT-HAND, surface_treatment: ZINC AND CHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-552-5237, 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
400AX12
NSN: 5306-01-552-5237
FSC: 5306 — Bolts
CAGE: 89619 — MACK TRUCKS, INC. DBA MACUNGIE OPERATIONS DIV LEHIGH VALLEY OPERATIONS (USA)
SPECIFICATIONS
fastener_length0.620 INCHES NOMINAL IN
special_featuresFINISH ZINC PLATE AND CLEAR CHROMATE PER MACK SPECIFICATION
thread_directionRIGHT-HAND
surface_treatmentZINC AND CHROMATE OVERALL
NSN5306-01-552-5237
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 400AX12 · 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: 0.620 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
SURFACE TREATMENT: ZINC AND CHROMATE OVERALL
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.620 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESFINISH ZINC PLATE AND CLEAR CHROMATE PER MACK SPECIFICATION
SURFACE TREATMENTZINC AND CHROMATE OVERALL
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 400AX12?
400AX12 is a BOLT,ASSEMBLED WASHER.
What is the NSN for 400AX12?
400AX12 is cataloged in the U.S. Government catalog under NSN 5306-01-552-5237. 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.