The Pulley,groove, cataloged under National Stock Number 3020-00-141-8030, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-141-8030 |
| Primary Part Number | 8699785 |
| 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 | 1.500 INCHES NOMINAL BB END IN |
| Hub Outside Diameter | 1.499 INCHES MINIMUM AND 1.501 INCHES MAXIMUM AA END IN |
| Bore Feature | INCLUDED |
| Securing Method | THREADED HOLE(S) |
| Split Hub Feature | NOT INCLUDED |
| Design Form | WEBBED |
| Outside Diameter | 5.7812 INCHES NOMINAL IN |
| Spline Length | 3.125 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| Material Document and Classification | QQ-I-652, CLASS 30 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 5.375 INCHES NOMINAL IN |
| Spline Major Diameter | 0.984 INCHES MINIMUM AND 0.985 INCHES MAXIMUM IN |
| Groove Depth | 0.500 INCHES NOMINAL IN |
| Bore Type | STRAIGHT SPLINE |
| Bearings | NOT INCLUDED |
| Counterbore Depth | 0.281 INCHES NOMINAL IN |
| Groove Quantity | 4 |
| Counterbore Location | AA END |
| V Groove Angle in Deg | 28.0 |
| Spline Quantity | 6 |
| Counterbore Diameter | 1.245 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN |
| Securing Hole Quantity | 6 |
| Thread Size | 5/16 - 18 |
| Unable to Decode | UNABLE TO DECODE AND UNABLE TO DECODE AND UNABLE TO DECODE |
| Surface Treatment | PHOSPHATE |
| Hole Location | EQUALLY SPACED ON 2.505 IN. BOLT CIRCLE IN |
| Minor Diameter | 0.849 INCHES MINIMUM AND 0.850 INCHES MAXIMUM SPLINE IN |
| Counterbore Feature | INCLUDED |
| 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 |
|---|---|
| 8699785 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3020-00-141-8030 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 3020-00-141-8030 has 1 manufacturer part number on file: 8699785 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8699785: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 1.500 INCHES NOMINAL BB END IN; Hub Outside Diameter: 1.499 INCHES MINIMUM AND 1.501 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.