The Pulley,groove, cataloged under National Stock Number 3020-00-374-4176, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 29 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-374-4176 |
| Primary Part Number | 7417178 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 1.780 INCHES MINIMUM AND 1.785 INCHES MAXIMUM BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.172 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Web/spoke Relationship to Face Centerline | OFFSET |
| Groove Shape | V |
| Outside Diameter | 5.250 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | WEBBED OR SPOKED |
| Pitch Diameter | 4.750 INCHES NOMINAL IN |
| Groove Depth | 0.625 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Counterbore Depth | 0.078 INCHES NOMINAL IN |
| Groove Quantity | 1 |
| Counterbore Location | BB END |
| V Groove Angle in Deg | 34.0 |
| Counterbore Diameter | 1.813 INCHES NOMINAL IN |
| Distance From Center of Bore to Bottom of Keyway | 0.766 INCHES MINIMUM AND 0.771 INCHES MAXIMUM IN |
| Keyway Width | 0.251 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN |
| Unable to Decode | UNABLE TO DECODE AND UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 1.032 INCHES MINIMUM AA END AND 1.042 INCHES MAXIMUM AA END AND 0.813 INCHES NOMINAL BB END IN |
| Counterbore Feature | INCLUDED |
| Bore Diameter | 1.247 INCHES MINIMUM AND 1.248 INCHES MAXIMUM IN |
| Material | IRON OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| 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 |
|---|---|
| 7417178 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| Y400K338 | 3/9 Design control — primary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc |
NSN 3020-00-374-4176 is a Pulley,groove, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-374-4176 has 1 manufacturer part number on file: 7417178 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7417178: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 1.780 INCHES MINIMUM AND 1.785 INCHES MAXIMUM BOTH ENDS IN; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED. 29 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.