The Pulley,flat, cataloged under National Stock Number 3020-01-054-5587, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 27 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-054-5587 |
| Primary Part Number | 12266527 |
| Item Name | Pulley,flat |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 1.000 INCHES NOMINAL BB END IN |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.145 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Flange Quantity | 1 |
| Outside Diameter | 2.000 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.000 INCHES NOMINAL IN |
| Rim Type | SOLID |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Counterbore Depth | 0.200 INCHES NOMINAL IN |
| Counterbore Location | BB END |
| Protruding Hub Characteristic | GROOVED |
| Counterbore Diameter | 0.750 INCHES NOMINAL IN |
| Unable to Decode | UNABLE TO DECODE |
| Surface Treatment | PASSIVATE |
| Distance From Outside Flange/rim to Hub End and Location | 0.360 INCHES NOMINAL AA END IN |
| Keying Facility | NOT INCLUDED |
| Flange Width | 0.120 INCHES NOMINAL IN |
| Counterbore Feature | INCLUDED |
| Bore Diameter | 0.680 INCHES NOMINAL IN |
| Material | STEEL COMP 630 OVERALL |
| Flange Location | CENTER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12266527 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 6695-502 | 5/9 Secondary reference Recon/optical, Inc. |
NSN 3020-01-054-5587 is a Pulley,flat, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-054-5587 has 1 manufacturer part number on file: 12266527 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12266527: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 1.000 INCHES NOMINAL BB END IN; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED. 27 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.