The Gearshaft,helical-Spur, cataloged under National Stock Number 3040-00-070-1157, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Rolls-Royce Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-00-070-1157 |
| Primary Part Number | 6854148 |
| Item Name | Gearshaft,helical-Spur |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL AMS6260,ROCKWELL 15N SCALE 89.3 MIN HARDNESS CASE,ROCKWELL C SCALE 30 MIN HARDNESS CORE,5.772 IN. NOM O/A LG,1ST END 1ST COMPLEMENT SPUR GEAR,37 TEETH,2.433 IN. MIN,2.438 IN. MAX OD,2.3125 IN. NOM PITCH DIA,25 DEG PRESSURE ANGLE,1ST END 2ND COMPLEMENT HELICAL GEAR,50 TEETH,5.196 IN. MIN,5.201 IN. MAX OD,5.0431 IN. NOM PITCH DIA,7.5 DEG RH HELIX ANGLE,25.1891 DEG PRESSURE ANGLE,INTERNAL SPLINE 24 TEETH,1.133 IN. MIN,1.138 IN. MAX ID,1.2000 IN. NOM PITCH DIA IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6854148 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6854148 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 3040-00-070-1157 is a Gearshaft,helical-Spur, manufactured by Rolls-Royce Corporation, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-070-1157 has 1 manufacturer part number on file: 6854148 (Rolls-Royce Corporation).
Key specifications for 6854148: General Characteristics Item Description: STEEL AMS6260,ROCKWELL 15N SCALE 89.3 MIN HARDNESS CASE,ROCKWELL C SCALE 30 MIN HARDNESS CORE,5.772 IN. NOM O/A LG,1ST END 1ST COMPLEMENT SPUR GEAR,37 TEETH,2.433 IN. MIN,2.438 IN. MAX OD,2.3125 IN. NOM PITCH DIA,25 DEG PRESSURE ANGLE,1ST END 2ND COMPLEMENT HELICAL GEAR,50 TEETH,5.196 IN. MIN,5.201 IN. MAX OD,5.0431 IN. NOM PITCH DIA,7.5 DEG RH HELIX ANGLE,25.1891 DEG PRESSURE ANGLE,INTERNAL SPLINE 24 TEETH,1.133 IN. MIN,1.138 IN. MAX ID,1.2000 IN. NOM PITCH DIA IN. 1 specification is 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.
NSN 3040-00-070-1157 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.