PartsTable TECHNICAL DATA SHEET

NSN 2520-01-657-0371Government record, cited

Differential Gear Unit2520-01-657-0371

NSN 2520-01-657-0371 · NIIN 016570371 · Part number 101.1601.AA

Ktsdi Llc · FSC 2520 — Vehicular Power Transmission Components · FSG 25 — Vehicular Equipment Components · CAGE 7AYE6

Government record, cited

NSN 2520-01-657-0371 — this item is cataloged by the U.S. Government under National Stock Number 2520-01-657-0371. Manufacturer of record part number: 101.1601.AA.

Also searched as 2520-01-657-0371 · 2520016570371 · NIIN 016570371 · 01-657-0371 · FSC 2520 Vehicular Power Transmission Components · CAGE 7AYE6 · 101.1601.AA

Nearby stock numbers ← 2520-01-657-0366 Disk, Clutch, Vehicular · 2520-01-657-0373 Disk, Clutch, Vehicular →

Features

Differential Gear Unit — FSC 2520
Construction: ASSEMBLED
1 manufacturer part number on file
Manufacturer of record: Ktsdi Llc

Identification

NSN: 2520-01-657-0371
NIIN: 016570371
FSC: 2520 — Vehicular Power Transmission Components
FSG: 25 — Vehicular Equipment Components
Primary part number: 101.1601.AA
Manufacturer: Ktsdi Llc

General Description

The Differential Gear Unit, cataloged under National Stock Number 2520-01-657-0371, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Ktsdi Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Technical Specifications

Parameter	Value
NSN	2520-01-657-0371
Primary Part Number	101.1601.AA
Item Name	Differential Gear Unit
FSC / FSG	2520 / 25 — Vehicular Power Transmission Components
Manufacturer	Ktsdi Llc
Status	ACTIVE
Construction	ASSEMBLED

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
101.1601.AA	Ktsdi Llc (USA)

Reference documents

Reference	Meaning
101.1601.AA	3/9 Design control — primary reference Kessler Intl Corp

No interchangeability data on file.

Other items in FSC 2520 — Vehicular Power Transmission Components

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

2520-00-000-3976

2520-00-000-3976 · Item name not on file

2520-00-000-8852

2520-00-000-8852 · Item name not on file

2520-00-000-9292

2520-00-000-9292 · Item name not on file

2520-00-001-0011

2520-00-001-0011 · Item name not on file

2520-00-001-3397

2520-00-001-3397 · Item name not on file

2520-00-001-3425

2520-00-001-3425 · Item name not on file

2520-00-001-3440

ROLLER,CENTER

2520-00-001-3441

2520-00-001-3441 · Item name not on file

Frequently Asked Questions

What is NSN 2520-01-657-0371?

NSN 2520-01-657-0371 is a Differential Gear Unit, manufactured by Ktsdi Llc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.

What part numbers are listed for NSN 2520-01-657-0371?

NSN 2520-01-657-0371 has 1 manufacturer part number on file: 101.1601.AA (Ktsdi Llc).

What are the specifications of 101.1601.AA?

Key specifications for 101.1601.AA: Special Features: TRUE OEM(CAGE 3S597)WILL NOT SELL DIRECTLY TO THE GOVERNMENT; Part Name Assigned by Controlling Agency: DIFFERENTIAL AND CARRIER ASSEMBLY; End Item Identification: 01-522-7364, ROUGH TERRAIN CONTAINER HANDLER; Construction: ASSEMBLED. 1 specification is documented in the U.S. Government catalog.

Is NSN 2520-01-657-0371 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.

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