The Pulley,groove, cataloged under National Stock Number 3020-01-126-9937, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-126-9937 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Groove Shape | U |
| Material Document and Classification | AMS 5659,CLASS 15-5PH,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 8-52T-142-2 | 5/9 Secondary reference Illinois Tool Wks Inc Linac Div |
| 8-52T-01 | D/9 Drawing number reference only Illinois Tool Wks Inc Linac Div |
| 8-52T-01 ITEM 40 | 5/9 Secondary reference Itw Heartland Components Inc |
| 8-52T-142-2 | 3/2 Design control — primary reference U.S. Government activity |
| 8-52T-142-2 | 5/9 Secondary reference Itw Heartland Components Inc |
| 8-52T-01 ITEM 40 | 5/9 Secondary reference Illinois Tool Wks Inc Linac Div |
NSN 3020-01-126-9937 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3020-01-159-5619. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-126-9937: Groove Shape: U; Material Document and Classification: AMS 5659,CLASS 15-5PH,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL CORROSION RESISTING OVERALL. 3 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.