NSN 2520-01-644-2656 · NIIN 016442656 · Part number 12446365
U S Army Tank Automotive Command Amsta-Im-Mm · FSC 2520 — Vehicular Power Transmission Components · FSG 25 — Vehicular Equipment Components · CAGE 19207
Government record, cited
NSN 2520-01-644-2656 — this item is cataloged by the U.S. Government under National Stock Number 2520-01-644-2656. Manufacturer of record part number: 12446365.
Also searched as2520-01-644-2656 ·
2520016442656 ·
NIIN 016442656 ·
01-644-2656 ·
FSC 2520 Vehicular Power Transmission Components · CAGE 19207 · 12446365
Hardness Rating: 32.0 ROCKWELL C NOMINAL AND 38.0 ROCKWELL C MAXIMUM
Material Document and Classification: ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A732 ASSN STD SINGLE MATERIAL RESPONSE
Vehicle Identification Designator: HMPT 800
Identification
NSN: 2520-01-644-2656
NIIN: 016442656
FSC: 2520 — Vehicular Power Transmission Components
FSG: 25 — Vehicular Equipment Components
Primary part number: 12446365
Manufacturer: U S Army Tank Automotive Command Amsta-Im-Mm
General Description
The Sleeve,transmission, cataloged under National Stock Number 2520-01-644-2656, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 9 specifications, 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
2520-01-644-2656
Primary Part Number
12446365
Item Name
Sleeve,transmission
FSC / FSG
2520 / 25 — Vehicular Power Transmission Components
Manufacturer
U S Army Tank Automotive Command Amsta-Im-Mm
Status
ACTIVE
Document Type
ENGINEERING DRAWING
Usage Design
VEHICULAR
Overall Diameter
1.19 INCHES NOMINAL IN
Heat Treatment
HARDENED AND TEMPERED
Hardness Rating
32.0 ROCKWELL C NOMINAL AND 38.0 ROCKWELL C MAXIMUM
Material Document and Classification
ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A732 ASSN STD SINGLE MATERIAL RESPONSE
Vehicle Identification Designator
HMPT 800
Vehicle Design Control Activity
19207
Material
STEEL
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
U S Army Tank Automotive Command Amsta-Im-Mm (USA)
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 2520-01-644-2656?
NSN 2520-01-644-2656 is a Sleeve,transmission, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
What part numbers are listed for NSN 2520-01-644-2656?
NSN 2520-01-644-2656 has 1 manufacturer part number on file: 12446365 (U S Army Tank Automotive Command Amsta-Im-Mm).
What are the specifications of 12446365?
Key specifications for 12446365: Document Type: ENGINEERING DRAWING; Usage Design: VEHICULAR; Overall Diameter: 1.19 INCHES NOMINAL IN; Heat Treatment: HARDENED AND TEMPERED. 9 specifications are documented in the U.S. Government catalog.
Is NSN 2520-01-644-2656 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.