The Pulley,groove, cataloged under National Stock Number 3020-01-437-8774, 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 Reliance Electric Company Dba Reliance & Dodge Brands. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-437-8774 |
| Primary Part Number | 121915 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Reliance Electric Company Dba Reliance & Dodge Brands |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Securing Method | SETSCREW |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.5310 INCHES MINIMUM AND 1.5940 INCHES MAXIMUM IN |
| Design Form | SPOKED |
| Web/spoke Relationship to Face Centerline | NOT OFFSET |
| Groove Shape | V |
| Outside Diameter | 6.2500 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | WEBBED OR SPOKED |
| Pitch Diameter | 6.0000 INCHES NOMINAL IN |
| Groove Depth | 0.4900 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 2 |
| V Groove Angle in Deg | 38.0 |
| Protruding Hub Characteristic | PLAIN |
| Distance From Center of Bore to Bottom of Keyway | 0.4690 INCHES NOMINAL IN |
| Keyway Width | 0.1880 INCHES NOMINAL IN |
| Unable to Decode | UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 0.1880 INCHES NOMINAL AA END AND 0.3440 INCHES NOMINAL BB END IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.7500 INCHES NOMINAL IN |
| Material | IRON CAST OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Furnished Items | KEYING FACILITY |
| 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 |
|---|---|
| 121915 PRIMARY | Reliance Electric Company Dba Reliance & Dodge Brands (USA) |
| 2AK64 3/4IN.BORE PRIMARY | Reliance Electric Company Dba Reliance & Dodge Brands (USA) |
| 2AK64 PRIMARY | Emerson Electric Co Browning Mfg Div (USA) |
| Reference | Meaning |
|---|---|
| 2AK64 3/4IN.BORE | 5/9 Secondary reference Emerson Electric Co Browning Mfg Div |
| P29604 | 5/9 Secondary reference Hyvac Products Inc |
| 2AK64 3/4IN.BORE | 5/9 Secondary reference Emerson Power Transmission Corporation Div Ept |
NSN 3020-01-437-8774 is a Pulley,groove, manufactured by Reliance Electric Company Dba Reliance & Dodge Brands, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-437-8774 has 3 manufacturer part numbers on file: 121915 (Reliance Electric Company Dba Reliance & Dodge Brands), 2AK64 3/4IN.BORE (Reliance Electric Company Dba Reliance & Dodge Brands), 2AK64 (Emerson Electric Co Browning Mfg Div).
2 possible matches (shared part number, not a government interchangeability claim): 2530-01-499-3440, 3020-01-597-2043. Verify interchangeability with system specifications before substitution.
Key specifications for 121915: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Securing Method: SETSCREW; Split Hub Feature: NOT INCLUDED. 28 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.