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Technical Data Sheet
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139-0056 — ADAPTER,AMMUNITION RACK

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

139-0056: ADAPTER,AMMUNITION RACK.

The ADAPTER,AMMUNITION RACK is a the manufacturer industrial component. Key specifications include end_item_identification: CATERPILLAR 428D, LOADER/BACKHOE, part_name_assigned_by_controlling_agency: ADAPTER. This part is cataloged in the U.S.

Government catalog under NSN 2590-01-505-6733, 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
139-0056
NSN: 2590-01-505-6733
FSC: 2590 — Miscellaneous Vehicular Components
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
end_item_identificationCATERPILLAR 428D, LOADER/BACKHOE
part_name_assigned_by_controlling_agencyADAPTER
NSN2590-01-505-6733
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ADAPTER,AMMUNITION RACK TITLE COMPONENT PN 139-0056 MFR ADAPTER,AMMUNITION RAC
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYADAPTER
END ITEM IDENTIFICATIONCATERPILLAR 428D, LOADER/BACKHOE
OTHER ITEMS IN FSC 2590 — Miscellaneous Vehicular Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2590-00-001-1252 2590-00-001-1253 2590-00-001-1254 2590-00-001-3423 2590-00-001-3438 2590-00-001-3439 2590-00-001-3461 2590-00-001-3463
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 139-0056?
139-0056 is a ADAPTER,AMMUNITION RACK.
What is the NSN for 139-0056?
139-0056 is cataloged in the U.S. Government catalog under NSN 2590-01-505-6733. 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.