The Pulley,groove, cataloged under National Stock Number 3020-01-261-8037, 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 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-261-8037 |
| Primary Part Number | 67A77-C112 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Securing Method | THREADED HOLE(S) |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 2.690 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Shape | V |
| Outside Diameter | 2.875 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Pitch Diameter | 2.820 INCHES NOMINAL IN |
| Groove Depth | 0.323 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 10 |
| V Groove Angle in Deg | 60.0 |
| Distance From Center of Bore to Bottom of Keyway | 0.813 INCHES NOMINAL IN |
| Securing Hole Quantity | 1 |
| Bolt Circle Diameter | 0.312 INCHES NOMINAL IN |
| Thread Size | 5/16-18 |
| Keyway Width | 0.313 INCHES NOMINAL IN |
| Hole Location | ON SURFACE OF HUB |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 1.250 INCHES NOMINAL IN |
| Material | IRON OVERALL |
| Furnished Items | KEYING FACILITY |
| Face Width | 2.690 INCHES NOMINAL IN |
| Groove Width | 0.453 INCHES NOMINAL IN |
| Securing Location | PULLEY SURFACE |
| 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 |
|---|---|
| 67A77-C112 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 3020-01-261-8037 is a Pulley,groove, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-261-8037 has 1 manufacturer part number on file: 67A77-C112 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 67A77-C112: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Securing Method: THREADED HOLE(S); 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.