The Pulley,groove, cataloged under National Stock Number 3020-01-134-3790, 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 28 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 | 3020-01-134-3790 |
| Primary Part Number | 12268914 |
| 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 |
| Bore Feature | INCLUDED |
| Split Hub Feature | INCLUDED |
| Bore Length | 1.500 INCHES MAXIMUM IN |
| Design Form | WEBBED |
| Groove Shape | V |
| Outside Diameter | 6.520 INCHES MINIMUM AND 6.570 INCHES MAXIMUM IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Hub Split Location | THROUGH ONE WALL |
| Style Designator | WEBBED OR SPOKED |
| Material Document and Classification | AISI C1040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.860 INCHES NOMINAL IN |
| Groove Depth | 1.471 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 2 |
| V Groove Angle in Deg | 36.0 |
| Distance From Center of Bore to Bottom of Keyway | 0.625 INCHES NOMINAL IN |
| Keyway Width | 0.250 INCHES MAXIMUM IN |
| Unable to Decode | UNABLE TO DECODE AND UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 0.750 INCHES MINIMUM AA END AND 1.000 INCHES MAXIMUM BB END IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 1.001 INCHES MINIMUM AND 1.003 INCHES MAXIMUM IN |
| Material | STEEL COMP 1040 OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Clamping Bolt Quantity | 1 |
| Furnished Items | KEYING FACILITY |
| 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 |
|---|---|
| 12268914 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3020-01-134-3790 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 3020-01-134-3790 has 1 manufacturer part number on file: 12268914 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12268914: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Split Hub Feature: INCLUDED; Bore Length: 1.500 INCHES MAXIMUM IN. 28 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.