NSN 2520-01-103-6594 — this item is cataloged by the U.S. Government under National Stock Number 2520-01-103-6594. Manufacturer of record part number: 1T 591.
Also searched as2520-01-103-6594 ·
2520011036594 ·
NIIN 011036594 ·
01-103-6594 ·
FSC 2520 Vehicular Power Transmission Components · CAGE 11083 · 1T 591 · 1T1389 · 1T0591 · 1T1389
Manufacturer of record: Caterpillar Inc Div Caterpillar Defense
Identification
NSN: 2520-01-103-6594
NIIN: 011036594
FSC: 2520 — Vehicular Power Transmission Components
FSG: 25 — Vehicular Equipment Components
Primary part number: 1T 591
Manufacturer: Caterpillar Inc Div Caterpillar Defense
General Description
The Carrier, cataloged under National Stock Number 2520-01-103-6594, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Catalog Facts
Item Name
Carrier
FSC / FSG
2520 — Vehicular Power Transmission Components (FSG 25)
Manufacturers
Caterpillar Inc Div Caterpillar Defense (CAGE 11083); Ohio Machinery Co Dba Ohio Cat (CAGE 1Z458)
Technical Specifications
Parameter
Value
NSN
2520-01-103-6594
Primary Part Number
1T 591
Item Name
Carrier
FSC / FSG
2520 / 25 — Vehicular Power Transmission Components
Manufacturer
Caterpillar Inc Div Caterpillar Defense
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 2520 — Vehicular Power Transmission Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2520-00-005-4937
CLUTCH PACKAGE
2520-00-006-6257
2520-00-006-6257 · Item name not on file
2520-00-008-9977
SPIDER,UNIVERSAL JOINT,VEHICULAR
2520-00-039-6567
SOCKET
2520-00-242-3316
CLUTCH ASSEMBLY,HUB
2520-00-358-3905
COVER
2520-00-366-7191
COLLAR,SHAFT LINKAGE
2520-00-708-6603
COVER CONTROL LEVER
Frequently Asked Questions
What is NSN 2520-01-103-6594?
NSN 2520-01-103-6594 is a Carrier, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
What part numbers are listed for NSN 2520-01-103-6594?
NSN 2520-01-103-6594 has 3 manufacturer part numbers on file: 1T 591 (Caterpillar Inc Div Caterpillar Defense), 1T0591 (Caterpillar Inc Div Caterpillar Defense), 1T1389 (Ohio Machinery Co Dba Ohio Cat).
Is NSN 2520-01-103-6594 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.