PartsTable TECHNICAL DATA SHEET

NSN 2520-01-617-7537Government record, cited

Synchronizer, Transmission2520-01-617-7537

NSN 2520-01-617-7537 · NIIN 016177537 · Part number A5900ESE

Allison Transmission Inc Dba Allison Transmission, Inc · FSC 2520 — Vehicular Power Transmission Components · FSG 25 — Vehicular Equipment Components · CAGE 73342

Government record, cited

NSN 2520-01-617-7537 — this item is cataloged by the U.S. Government under National Stock Number 2520-01-617-7537. Manufacturer of record part number: A5900ESE.

Also searched as 2520-01-617-7537 · 2520016177537 · NIIN 016177537 · 01-617-7537 · FSC 2520 Vehicular Power Transmission Components · CAGE 73342 · A5900ESE · A5300ESE · 3785424 · 3785424

Nearby stock numbers ← 2520-01-617-6664 Propeller Shaft with Universal J · 2520-01-617-9136 Boot, Power Transmission Componen →

Features

Synchronizer,transmission — FSC 2520
2 manufacturer part numbers on file
Manufacturer of record: Allison Transmission Inc Dba Allison Transmission, Inc

Identification

NSN: 2520-01-617-7537
NIIN: 016177537
FSC: 2520 — Vehicular Power Transmission Components
FSG: 25 — Vehicular Equipment Components
Primary part number: A5900ESE
Manufacturer: Allison Transmission Inc Dba Allison Transmission, Inc

General Description

The Synchronizer,transmission, cataloged under National Stock Number 2520-01-617-7537, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Synchronizer,transmission
FSC / FSG	2520 — Vehicular Power Transmission Components (FSG 25)
Manufacturers	Allison Transmission Inc Dba Allison Transmission, Inc (CAGE 73342); Oshkosh Defense Llc (CAGE 75Q65)

Technical Specifications

Parameter	Value
NSN	2520-01-617-7537
Primary Part Number	A5900ESE
Item Name	Synchronizer,transmission
FSC / FSG	2520 / 25 — Vehicular Power Transmission Components
Manufacturer	Allison Transmission Inc Dba Allison Transmission, Inc
Status	ACTIVE

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
A5900ESE PRIMARY	Allison Transmission Inc Dba Allison Transmission, Inc (USA)
3785424 PRIMARY	Oshkosh Defense Llc (USA)

Reference documents

Reference	Meaning
A5300ESE	3/9 Design control — primary reference Allison Transmission Inc Dba Allison Transmission, Inc
3785424	5/9 Secondary reference Oshkosh 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 2520-01-617-7537?

NSN 2520-01-617-7537 is a Synchronizer,transmission, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.

What part numbers are listed for NSN 2520-01-617-7537?

NSN 2520-01-617-7537 has 2 manufacturer part numbers on file: A5900ESE (Allison Transmission Inc Dba Allison Transmission, Inc), 3785424 (Oshkosh Defense Llc).

Is NSN 2520-01-617-7537 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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