The Pulley,flat, cataloged under National Stock Number 3020-01-162-6724, 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 S & L Aerospace Metals Llc. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-162-6724 |
| Primary Part Number | 34008-041 |
| Item Name | Pulley,flat |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | S & L Aerospace Metals Llc |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 1.150 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.000 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Web/spoke Relationship to Face Centerline | NOT OFFSET |
| Flange Quantity | 2 |
| Outside Diameter | 2.125 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| Material Document and Classification | QQ-A-200/3, ALLOY 2024, T3511 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.312 INCHES NOMINAL IN |
| Rim Type | SOLID |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Unable to Decode | UNABLE TO DECODE |
| Surface Treatment | ANODIZE |
| Keying Facility | NOT INCLUDED |
| Flange Width | 0.093 INCHES NOMINAL IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.406 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Flange Location | OUTSIDE |
| Crown Face | NOT INCLUDED |
| Face Width | 1.000 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 |
|---|---|
| 70250-34008-041 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 34008-041 PRIMARY | S & L Aerospace Metals Llc (USA) |
| 70250-34008 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 70250-34008-041 | S & L Aerospace Metals Llc (USA) |
NSN 3020-01-162-6724 is a Pulley,flat, manufactured by S & L Aerospace Metals Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-162-6724 has 4 manufacturer part numbers on file: 70250-34008-041 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 34008-041 (S & L Aerospace Metals Llc), 70250-34008 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 70250-34008-041 (S & L Aerospace Metals Llc).
Key specifications for 34008-041: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 1.150 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED. 26 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.