The Pulley,groove, cataloged under National Stock Number 3020-01-229-3432, 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 29 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.
| Parameter | Value |
|---|---|
| NSN | 3020-01-229-3432 |
| Primary Part Number | 12349528 |
| Item Name | Pulley,groove |
| 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 | 4.060 INCHES NOMINAL BB END IN |
| Hub Outside Diameter | 7.000 INCHES NOMINAL AA END IN |
| Bore Feature | INCLUDED |
| Bearing Quantity | 2 |
| Securing Method | RETAINING PLATE AND DRILLED HOLE |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.188 INCHES MINIMUM AND 1.078 INCHES MAXIMUM IN |
| Design Form | PLAIN |
| Unable to Decode | UNABLE TO DECODE |
| First End Length From Groove to End | 0.250 INCHES NOMINAL BB END IN |
| Groove Shape | V |
| Outside Diameter | 7.640 INCHES NOMINAL IN |
| Distance From Outside Flange/rim to Hub End and Location | 1.600 INCHES NOMINAL BB END IN |
| Spline Length | 1.000 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Pitch Diameter | 7.3200 INCHES NOMINAL IN |
| Spline Major Diameter | 0.948 INCHES NOMINAL IN |
| Groove Depth | 0.325 INCHES NOMINAL IN |
| Bore Type | STRAIGHT OR INVOLUTE SPLINE |
| Bearings | INCLUDED |
| Counterbore Depth | 0.500 INCHES NOMINAL IN |
| Groove Quantity | 3 |
| Counterbore Location | BB END |
| V Groove Angle in Deg | 40.2 |
| Spline Pressure Angle in Deg | 30.0 |
| Protruding Hub Characteristic | GROOVED OR PLAIN |
| Spline Quantity | 14 |
| Counterbore Diameter | 3.450 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12349528 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3020-01-229-3432 is a Pulley,groove, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-229-3432 has 1 manufacturer part number on file: 12349528 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12349528: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 4.060 INCHES NOMINAL BB END IN; Hub Outside Diameter: 7.000 INCHES NOMINAL AA END IN; Bore Feature: INCLUDED. 29 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.
NSN 3020-01-229-3432 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.