The Pulley,groove, cataloged under National Stock Number 3020-01-368-7725, 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 Smith-Berger Marine, Inc. Government technical data includes 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-368-7725 |
| Primary Part Number | 52544-B |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Smith-Berger Marine, Inc |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Bearing Quantity | 2 |
| Bore Length | 8.500 INCHES NOMINAL IN |
| Design Form | SPOKED |
| Web/spoke Relationship to Face Centerline | NOT OFFSET |
| Special Test Features | USE FOR 1 IN. LINE IN |
| Groove Shape | V |
| Outside Diameter | 24.000 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| Groove Depth | 4.000 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | INCLUDED |
| Groove Quantity | 1 |
| Bearing Type | SLEEVE |
| Distance From Outside Flange/rim to Hub End and Location | 2.000 INCHES NOMINAL BOTH ENDS IN |
| Counterbore Feature | NOT INCLUDED |
| Face Width | 8.000 INCHES NOMINAL IN |
| Groove Width | 6.500 INCHES NOMINAL IN |
| Furnished Items and Quantity | SHEAVE PIN,1; 2-12 UNF HEX NUT,1; GREASE FITTING,1 |
| 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 |
|---|---|
| 52544-B PRIMARY | Smith-Berger Marine, Inc (USA) |
| Reference | Meaning |
|---|---|
| 6138926 | D/9 Drawing number reference only U.S. Government activity |
| 6138926-42 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-01-368-7725 is a Pulley,groove, manufactured by Smith-Berger Marine, Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-368-7725 has 1 manufacturer part number on file: 52544-B (Smith-Berger Marine, Inc).
Key specifications for 52544-B: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Bearing Quantity: 2; Bore Length: 8.500 INCHES NOMINAL IN. 21 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.