The Pulley,groove, cataloged under National Stock Number 3020-00-970-9164, 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 Northrop Grumman Systems Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-970-9164 |
| Primary Part Number | 128CVM10827-1 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 0.455 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Bearing Quantity | 1 |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.625 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Unable to Decode | UNABLE TO DECODE |
| First Step Face Largest Diameter and Location | 1.375 INCHES NOMINAL BOTH ENDS IN |
| Groove Radius | 0.094 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN |
| Groove Shape | U |
| Outside Diameter | 2.000 INCHES NOMINAL IN |
| Distance From Outside Flange/rim to Hub End and Location | 0.104 INCHES NOMINAL BOTH ENDS IN |
| Second Step Length | 0.0725 INCHES NOMINAL BOTH ENDS IN |
| Style Designator | PLAIN |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI E52100 ASSN STD SINGLE MATERIAL RESPONSE OR SAE E52100 ASSN STD SINGLE MATERIAL RESPONSE HUB |
| Material Document and Classification | QQ-A-225/4, ALLOY 2014, T651 FED SPEC SINGLE MATERIAL RESPONSE RIM |
| Groove Depth | 0.250 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | INCLUDED |
| Groove Quantity | 1 |
| Protruding Hub Characteristic | STEPPED |
| Unable to Decode | UNABLE TO DECODE |
| First Step Length | 0.0315 INCHES NOMINAL BOTH ENDS IN |
| Bearing Type | BALL |
| Surface Treatment | CADMIUM |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.312 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2014 OVERALL |
| 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 |
|---|---|
| 128CVM10827-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 128CVM10827-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 3020-00-970-9164 is a Pulley,groove, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-970-9164 has 1 manufacturer part number on file: 128CVM10827-1 (Northrop Grumman Systems Corporation).
Key specifications for 128CVM10827-1: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 0.455 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Bearing Quantity: 1. 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.