The Pulley,groove, cataloged under National Stock Number 3020-01-026-4798, 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 | 3020-01-026-4798 |
| Primary Part Number | 11677575 |
| 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 | 1.500 INCHES NOMINAL AA END IN |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.305 INCHES MINIMUM AND 1.325 INCHES MAXIMUM IN |
| Design Form | PLAIN |
| Groove Shape | V |
| Outside Diameter | 3.610 INCHES MINIMUM AND 3.630 INCHES MAXIMUM IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | WEBBED OR SPOKED |
| Material Document and Classification | QQ-I-666, GRADE 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.610 INCHES MINIMUM AND 2.630 INCHES MAXIMUM IN |
| Groove Depth | 0.507 INCHES MINIMUM AND 0.527 INCHES MAXIMUM IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 2 |
| V Groove Angle in Deg | 36.0 |
| Protruding Hub Characteristic | PLAIN |
| Distance From Center of Bore to Bottom of Keyway | 0.561 INCHES NOMINAL IN |
| Keyway Width | 0.250 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN |
| Unable to Decode | UNABLE TO DECODE |
| Surface Treatment | PAINT |
| Distance From Outside Flange/rim to Hub End and Location | 1.217 INCHES NOMINAL AA END AND 1.325 INCHES MAXIMUM BB END IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.875 INCHES MINIMUM AND 0.876 INCHES MAXIMUM IN |
| Material | IRON CAST UNS F22400 OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 1.404 INCHES NOMINAL IN |
| 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 |
|---|---|
| 11677575 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3020-01-026-4798 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 3020-01-026-4798 has 1 manufacturer part number on file: 11677575 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11677575: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 1.500 INCHES NOMINAL AA END IN; Bore Feature: INCLUDED; Split Hub Feature: NOT 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.
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.