The Pulley,groove, cataloged under National Stock Number 3020-01-245-7688, 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 Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc. Government technical data includes 30 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-01-245-7688 |
| Primary Part Number | 39-2267-001 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Securing Method | DRILLED HOLE |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.250 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Radius | 0.015 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 4.250 INCHES MINIMUM AND 4.252 INCHES MAXIMUM IN |
| Style Designator | WEBBED OR SPOKED |
| Material Document and Classification | QQ-A-225/6, ALLOY 2024, T351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Groove Depth | 0.081 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Counterbore Depth | 0.438 INCHES NOMINAL IN |
| Groove Quantity | 6 |
| Counterbore Location | AA END |
| Counterbore Diameter | 3.938 INCHES NOMINAL IN |
| Securing Hole Quantity | 3 |
| Drilled Hole Diameter | 0.280 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE |
| Distance From Outside Flange/rim to Hub End and Location | 0.438 INCHES NOMINAL AA END IN |
| Hole Location | 3/4 IN. FROM FACE IN |
| Counterbore Feature | INCLUDED |
| Bore Diameter | 3.001 INCHES MINIMUM AND 3.003 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Face Width | 0.688 INCHES NOMINAL IN |
| Groove Width | 0.092 INCHES NOMINAL IN |
| Securing Location | BOTH ENDS |
| 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 |
|---|---|
| 39-2267-001 PRIMARY | Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc (USA) |
| Reference | Meaning |
|---|---|
| 39-2267-001 | 5/9 Secondary reference Kilgore Flares Company Llc |
| 39-2267-001 | 5/9 Secondary reference Alliant Defense Electronics Systems Inc |
NSN 3020-01-245-7688 is a Pulley,groove, manufactured by Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-245-7688 has 1 manufacturer part number on file: 39-2267-001 (Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc).
Key specifications for 39-2267-001: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Securing Method: DRILLED HOLE; Split Hub Feature: NOT INCLUDED. 30 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.