The Differential Gear Unit, cataloged under National Stock Number 3040-01-067-7983, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Level 10 Industries, Inc. Div Level 10 Industries. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-01-067-7983 |
| Primary Part Number | AA-20646-1 |
| Item Name | Differential Gear Unit |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Level 10 Industries, Inc. Div Level 10 Industries |
| Status | ACTIVE |
| Nominal Overall Length | 2.300 INCHES IN |
| Material | STEEL AND ALUMINUM ALLOY OVERALL |
| 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 |
|---|---|
| AA-20646-1 PRIMARY | Level 10 Industries, Inc. Div Level 10 Industries (USA) |
| Reference | Meaning |
|---|---|
| AA-20646-1 | 5/9 Secondary reference Cooper Industries Inc Dba Cooper Tools |
NSN 3040-01-067-7983 is a Differential Gear Unit, manufactured by Level 10 Industries, Inc. Div Level 10 Industries, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-067-7983 has 1 manufacturer part number on file: AA-20646-1 (Level 10 Industries, Inc. Div Level 10 Industries).
Key specifications for AA-20646-1: Nominal Overall Length: 2.300 INCHES IN; Special Features: FIRST END: INSIDE DIAMETER 0.312 INCHES WITH NEEDLE BEARING; 2ND END: OUTSIDE DIAMETER 0.937 INCHES, 0.500 INCHES WITH GEAR SHAFT; CONTAINS 4 MOUNTING HOLES 0.250 INCHES INSIDE DIAMETER, EQUALLY SPACED ON A 3.422 INCHE DIAMETER BOLT CIRCLE; OUTSIDE DIAMETER 3.875 INCHES IN; Material: STEEL AND ALUMINUM ALLOY OVERALL. 2 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.