The Pulley,groove, cataloged under National Stock Number 3020-01-073-4954, 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 Ge Aviation Systems Llc. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-073-4954 |
| Primary Part Number | 157273-01 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Ge Aviation Systems Llc |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.080 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN |
| Design Form | PLAIN |
| Groove Shape | V |
| Outside Diameter | 0.352 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | L-P-392, TYPE 2, CLASS 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.312 INCHES NOMINAL IN |
| Groove Depth | 0.020 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 1 |
| V Groove Angle in Deg | 30.0 |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.188 INCHES NOMINAL IN |
| Material | PLASTIC ACETAL OVERALL |
| Face Width | 0.080 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN |
| Groove Width | 0.045 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 |
|---|---|
| 157273-01 PRIMARY | Ge Aviation Systems Llc (USA) |
NSN 3020-01-073-4954 is a Pulley,groove, manufactured by Ge Aviation Systems Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-073-4954 has 1 manufacturer part number on file: 157273-01 (Ge Aviation Systems Llc).
Key specifications for 157273-01: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED; Bore Length: 0.080 INCHES MINIMUM AND 0.085 INCHES MAXIMUM 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.