The Pulley,groove, cataloged under National Stock Number 3020-00-277-1127, 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 Lockheed Martin Corporation Div Rotary and Mission Systems. Government technical data includes 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-277-1127 |
| Primary Part Number | 1628A81430 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 0.484 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Bearing Quantity | 1 |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.479 INCHES MINIMUM AND 0.484 INCHES MAXIMUM IN |
| Design Form | PLAIN |
| Web/spoke Relationship to Face Centerline | NOT OFFSET |
| Groove Radius | 0.109 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN |
| Groove Shape | U |
| Outside Diameter | 3.490 INCHES MINIMUM AND 3.510 INCHES MAXIMUM IN |
| Style Designator | PLAIN |
| Groove Depth | 0.245 INCHES MINIMUM AND 0.257 INCHES MAXIMUM IN |
| Bore Type | STRAIGHT |
| Bearings | INCLUDED |
| Groove Quantity | 1 |
| Bearing Type | SLEEVE |
| Unable to Decode | UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 0.029 INCHES MINIMUM BOTH ENDS AND 0.037 INCHES MAXIMUM BOTH ENDS IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 0.410 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN |
| Groove Width | 0.125 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 |
|---|---|
| 1628A81430 PRIMARY | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
| Reference | Meaning |
|---|---|
| AN210-1P | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-277-1127 is a Pulley,groove, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-277-1127 has 1 manufacturer part number on file: 1628A81430 (Lockheed Martin Corporation Div Rotary and Mission Systems).
Key specifications for 1628A81430: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 0.484 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Bearing Quantity: 1. 25 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.