The Pulley,groove, cataloged under National Stock Number 3020-00-771-3402, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-771-3402 |
| Primary Part Number | 7713402 |
| 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 | 1.000 INCHES NOMINAL BB END IN |
| Hub Outside Diameter | 1.120 INCHES MINIMUM AND 1.125 INCHES MAXIMUM AA END IN |
| Bore Feature | INCLUDED |
| Securing Method | THREADED HOLE(S) |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.880 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Web/spoke Relationship to Face Centerline | OFFSET |
| Groove Shape | V |
| Standard V-Belt Section Designation for Which Designed | C |
| Outside Diameter | 4.620 INCHES NOMINAL IN |
| Material Document and Classification | QQ-I-652, CLASS 25 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.500 INCHES NOMINAL IN |
| Groove Depth | 0.870 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 1 |
| V Groove Angle in Deg | 36.0 |
| Securing Hole Quantity | 4 |
| Thread Size | 1/4 - 20 NC - 2 |
| Unable to Decode | UNABLE TO DECODE AND UNABLE TO DECODE AND UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 0.880 INCHES NOMINAL AA END AND 1.060 INCHES NOMINAL BB END IN |
| Hole Location | HOLES LOCATED ON 1.880 IN. DIA BOLT CIRCLE ON WEB IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.6235 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN |
| Material | IRON CAST UNS F11701 OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 1.060 INCHES NOMINAL IN |
| 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 |
|---|---|
| 7713402 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| GPWS8509 | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| GPWS8509 | 5/9 Secondary reference Ford Motor Company |
NSN 3020-00-771-3402 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 3020-00-771-3402 has 1 manufacturer part number on file: 7713402 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7713402: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 1.000 INCHES NOMINAL BB END IN; Hub Outside Diameter: 1.120 INCHES MINIMUM AND 1.125 INCHES MAXIMUM AA END IN; Bore Feature: 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.