The Pulley,groove, cataloged under National Stock Number 3020-01-131-1872, 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 Carl Stahl Sava Industries, Inc.. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-131-1872 |
| Primary Part Number | SP2044 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Carl Stahl Sava Industries, Inc. |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 0.203 INCHES NOMINAL AA END IN |
| Bore Feature | INCLUDED |
| Bearing Quantity | 1 |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.156 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Radius | 0.035 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 0.500 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Groove Depth | 0.035 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | INCLUDED |
| Groove Quantity | 1 |
| Protruding Hub Characteristic | PLAIN |
| Bearing Type | BALL |
| Unable to Decode | UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 0.016 INCHES NOMINAL AA END IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.500 INCHES NOMINAL IN |
| Material | STEEL HUB |
| Material | PLASTIC POLYAMIDE NYLON RIM |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 0.125 INCHES NOMINAL IN |
| Groove Width | 0.070 INCHES NOMINAL IN |
| Lightening Hole | NOT INCLUDED |
| 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 |
|---|---|
| SP2044 | Carl Stahl Sava Industries, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2771761 | D/9 Drawing number reference only U.S. Government activity |
| SP-243 | 5/9 Secondary reference Carl Stahl Sava Industries, Inc. |
| 2771761-101 | 3/2 Design control — primary reference U.S. Government activity |
| 10106705 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 3020-01-131-1872 is a Pulley,groove, manufactured by Carl Stahl Sava Industries, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-131-1872 has 1 manufacturer part number on file: SP2044 (Carl Stahl Sava Industries, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-238-8405. Verify interchangeability with system specifications before substitution.
Key specifications for SP2044: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 0.203 INCHES NOMINAL AA END IN; Bore Feature: INCLUDED; Bearing Quantity: 1. 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.