The Shaft,drive Input, cataloged under National Stock Number 2520-00-757-0176, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2520-00-757-0176 |
| Primary Part Number | 6757256 |
| Item Name | Shaft,drive Input |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| General Characteristics Item Description | MATL STEEL,SAE 4142H,HARDEN ROCKWELL C,32-40,SPLINED,16 TEETH,30 DEG PRESSURE ANGLE,CORD TOOTH THK MIN 0.1930 IN. MAX 0.1950 IN.,PITCH DIA 0.500 IN.,ONE END FLANGED,6 0.5318 IN. DIA HOLES EQUALLY SPACED ON A 4.400 IN. BOLT CIRCLE,2 HOLES THREADED 0.375-24 UNF 2B,0.562 IN. OD,COUNTERBORED1.750 IN. OD,ONE END 2.165 IN. OD,2 UNTHREADED HOLES 1.160 IN. C TO C,4.960 IN. O/A LG,SHAFT SOLID IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6757256 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| Reference | Meaning |
|---|---|
| 6757256 | 5/9 Secondary reference General Motors Corp |
NSN 2520-00-757-0176 is a Shaft,drive Input, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-00-757-0176 has 1 manufacturer part number on file: 6757256 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 6757256: General Characteristics Item Description: MATL STEEL,SAE 4142H,HARDEN ROCKWELL C,32-40,SPLINED,16 TEETH,30 DEG PRESSURE ANGLE,CORD TOOTH THK MIN 0.1930 IN. MAX 0.1950 IN.,PITCH DIA 0.500 IN.,ONE END FLANGED,6 0.5318 IN. DIA HOLES EQUALLY SPACED ON A 4.400 IN. BOLT CIRCLE,2 HOLES THREADED 0.375-24 UNF 2B,0.562 IN. OD,COUNTERBORED1.750 IN. OD,ONE END 2.165 IN. OD,2 UNTHREADED HOLES 1.160 IN. C TO C,4.960 IN. O/A LG,SHAFT SOLID IN. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.