PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S1000Transfer Transmission Assembly

Allison Transmission Inc Dba Allison Transmission, Inc · NSN 2520-01-566-9006 · FSC 2520 · No Item Name Available
Verified by PartsTable
NSN 2520-01-566-9006 — this item is cataloged by the U.S. Government under National Stock Number 2520-01-566-9006. Primary manufacturer part number: S1000.
Features
  • Transfer Transmission Assembly — FSC 2520
  • Input Shaft End Type: SPLINED
  • Bolt Hole Quantity: 6
  • 5 verified cross-references
  • Primary manufacturer: Allison Transmission Inc Dba Allison Transmission, Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transfer Transmission Assembly, cataloged under National Stock Number 2520-01-566-9006, is classified within Federal Supply Class 2520 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2520-01-566-9006
Primary Part NumberS1000
Item NameTransfer Transmission Assembly
FSC / FSG2520 / 25 — No Item Name Available
ManufacturerAllison Transmission Inc Dba Allison Transmission, Inc
StatusACTIVE
Input Shaft End TypeSPLINED
Bolt Hole Quantity6
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-374-03924367130 INTERCHANGEABLE
Seal,mechanical
Agco Corp Parts Opn
2040-00-385-9075M13166 INTERCHANGEABLE
Strainer,salt Water
Gross Mechanical Laboratories Inc
1620-00-513-45991020-2 INTERCHANGEABLE
Cylinder,landing Gear
Blair Industries Inc
5330-00-531-6193S1000 INTERCHANGEABLE
Seal,plain Encased
Thomson Industries Inc
6685-00-757-5743S1000 INTERCHANGEABLE
Manometer,vertical Tube
King Engineering Corporation Dba King-Gage Systems
5360-00-865-323816560PC6 INTERCHANGEABLE
Spring,helical,compression
Calgon Carbon Uv Technologies Llc Dba Hyde Marine
4220-01-040-7290400-174-11 INTERCHANGEABLE
Sensor,hyperbaric Oxygen
Bio-Marine Technologies Inc
5930-01-055-3973 INTERCHANGEABLE
Switch,push
6640-01-217-5642 INTERCHANGEABLE
Test Tube,blood Sedimentation
3510-01-298-9282 INTERCHANGEABLE
Washing Machine-Drying Tumbler,h
Cross-Reference Index
Part NumberManufacturer
16520701 Uro Vehiculos Especiales Sa (ESP)
165606 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
S1000 PRIMARY Allison Transmission Inc Dba Allison Transmission, Inc (USA)
16520701 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
165606 Uro Vehiculos Especiales Sa (ESP)
Related Parts
5330-00-374-0392INTERCHANGEABLE
SEAL,MECHANICAL
4367130
2040-00-385-9075INTERCHANGEABLE
STRAINER,SALT WATER
M13166
1620-00-513-4599INTERCHANGEABLE
CYLINDER,LANDING GEAR
1020-2
5330-00-531-6193INTERCHANGEABLE
SEAL,PLAIN ENCASED
S1000
6685-00-757-5743INTERCHANGEABLE
MANOMETER,VERTICAL TUBE
S1000
5360-00-865-3238INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
16560PC6
4220-01-040-7290INTERCHANGEABLE
SENSOR,HYPERBARIC OXYGEN
400-174-11
5930-01-055-3973INTERCHANGEABLE
SWITCH,PUSH
6640-01-217-5642INTERCHANGEABLE
TEST TUBE,BLOOD SEDIMENTATION
3510-01-298-9282INTERCHANGEABLE
WASHING MACHINE-DRYING TUMBLER,H
6130-01-444-6281INTERCHANGEABLE
ANALYZER-CHARGER,BATTERY
1240-01-495-5666INTERCHANGEABLE
STEM,SIGHT ALIGNMEN
S-1000

Frequently Asked Questions

What is NSN 2520-01-566-9006?

NSN 2520-01-566-9006 is a Transfer Transmission Assembly, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 2520 (No Item Name Available). Status: active.

What are the part numbers for NSN 2520-01-566-9006?

NSN 2520-01-566-9006 has 5 cross-referenced part numbers: 16520701 (Uro Vehiculos Especiales Sa), 165606 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales), S1000 (Allison Transmission Inc Dba Allison Transmission, Inc), 16520701 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales), 165606 (Uro Vehiculos Especiales Sa).

What NSN replaces 2520-01-566-9006?

There are 12 known substitutes for 2520-01-566-9006: 5330-00-374-0392, 2040-00-385-9075, 1620-00-513-4599 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S1000?

Key specifications for S1000: Input Shaft End Type: SPLINED; Overall Length: 28.700 INCHES MINIMUM AND 29.100 INCHES MAXIMUM IN; Special Features: FULL LOAD GOVERNED SPEED 2200-4600 RPM;ENGINE IDLE SPEED 500-820RPM;OIL TYPE USED TRANSYD,DEXRON III RPM; Bolt Hole Quantity: 6. 4 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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