The Plate,intermediate,friction Clut, cataloged under National Stock Number 2520-01-644-2641, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-01-644-2641 |
| Primary Part Number | 12446378-1 |
| Item Name | Plate,intermediate,friction Clut |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Overall Diameter | 9.20 INCHES NOMINAL IN |
| Heat Treatment | COLD DRAWN AND TEMPERED |
| Overall Thickness | 0.086 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A568 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A684 ASSN STD SINGLE MATERIAL RESPONSE |
| Vehicle Identification Designator | HMPT 800 AND HMPT 675 |
| Vehicle Design Control Activity | 19207 |
| Material | STEEL,CARBON |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12446378-1 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12446378 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 2520-01-644-2641 is a Plate,intermediate,friction Clut, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-644-2641 has 1 manufacturer part number on file: 12446378-1 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12446378-1: Overall Diameter: 9.20 INCHES NOMINAL IN; Heat Treatment: COLD DRAWN AND TEMPERED; Overall Thickness: 0.086 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN; Material Document and Classification: ASTM A568 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A684 ASSN STD SINGLE MATERIAL RESPONSE. 7 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
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.