The Pulley,groove, cataloged under National Stock Number 3020-00-287-9661, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 3020-00-287-9661 |
| Primary Part Number | MS20219A4 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | CANCELLED |
| Distance From Outside Flange/rim to Hub End and Location | 0.061 INCHES MINIMUM BOTH ENDS AND 0.063 INCHES MAXIMUM BOTH ENDS IN |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Surface Treatment | ANODIZE |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-A-268, T4-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Integral Cooling Vane | NOT INCLUDED |
| Unable to Decode | UNABLE TO DECODE |
| Bearing Quantity | 1 |
| Bearing Type | BALL |
| Groove Quantity | 1 |
| Split Hub Feature | NOT INCLUDED |
| Lightening Hole | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Unable to Decode | UNABLE TO DECODE AND UNABLE TO DECODE |
| Bore Type | STRAIGHT |
| Groove Shape | U |
| Face Width | 0.310 INCHES NOMINAL IN |
| Hub Outside Diameter | 0.375 INCHES MINIMUM AND 0.425 INCHES MAXIMUM BOTH ENDS IN |
| Design Form | PLAIN |
| Counterbore Feature | NOT INCLUDED |
| Bearings | INCLUDED |
| Groove Radius | 0.047 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Bore Diameter | 0.2495 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN |
| Groove Depth | 0.156 INCHES NOMINAL IN |
| Outside Diameter | 2.630 INCHES NOMINAL IN |
| Groove Width | 0.150 INCHES NOMINAL IN |
| Bore Length | 0.432 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS20219A4 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 20219A4 | Ralmark Co (USA) |
| MIL-DTL-7034/1 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MS20219A4 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| AN219A4 | Aeronautical Standards Group Dept of Navy and Air Force (USA) |
| 20219A4 | Arvan, Inc. Dba Aerospace Division (USA) |
| 20219A4 | Atco Pulley Corp |
NSN 3020-00-287-9661 is a Pulley,groove, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 3020 (No Item Name Available). Status: cancelled.
NSN 3020-00-287-9661 has 7 cross-referenced part numbers: MS20219A4 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 20219A4 (Ralmark Co), MIL-DTL-7034/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS20219A4 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), AN219A4 (Aeronautical Standards Group Dept of Navy and Air Force) and 2 more.
There are 7 known substitutes for 3020-00-287-9661: 3020-00-277-1119, 3020-00-277-1120, 3020-00-277-1121 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for MS20219A4: Distance From Outside Flange/rim to Hub End and Location: 0.061 INCHES MINIMUM BOTH ENDS AND 0.063 INCHES MAXIMUM BOTH ENDS IN; Material: ALUMINUM ALLOY 2024 OVERALL; Surface Treatment: ANODIZE; Style Designator: PLAIN. 28 total characteristics are documented in the Federal Logistics Information System.
NSN 3020-00-287-9661 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.