The Gear,bevel, cataloged under National Stock Number 3020-00-326-7484, 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 Rolls-Royce Corporation. Government technical data includes 28 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-00-326-7484 |
| Primary Part Number | 6731183 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.555 INCHES FIRST END IN |
| Bore Nominal Diameter | 0.755 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.984 INCHES SECOND END IN |
| Teeth Quantity | 51 |
| Body Style | WEBBED, SOLID |
| Pitch Angle | 73.1995 DEGREES |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN SECOND END |
| Bore Style | INVOLUTE SPLINE FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.589 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 2.094 INCHES FIRST END IN |
| First Step Nominal Length | 0.813 INCHES FIRST END IN |
| Teeth Type | STRAIGHT |
| Hardness Rating | 30.0 ROCKWELL C NOMINAL BODY |
| Nominal Overall Length | 4.178 INCHES IN |
| Style Designator | SIDE FACE, PROTRUDING HUBS |
| Material Document and Classification | AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.2500 INCHES NOMINAL IN |
| First Step Nominal Diameter | 1.156 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| Spline Quantity | 12 FIRST END |
| End Nominal Length | 1.281 INCHES FIRST END IN |
| Nominal Outside Diameter | 4.2789 INCHES IN |
| End Nominal Diameter | 0.984 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Spline Pitch Diameter | 0.6160 INCHES NOMINAL FIRST END IN |
| Face Nominal Width | 0.344 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 6731183 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6731183 | D/9 Drawing number reference only Allison Transmission Inc Dba Allison Transmission, Inc |
| 6731183 | 5/9 Secondary reference General Motors Corp |
NSN 3020-00-326-7484 is a Gear,bevel, manufactured by Rolls-Royce Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-326-7484 has 1 manufacturer part number on file: 6731183 (Rolls-Royce Corporation).
Key specifications for 6731183: Bore Nominal Diameter: 0.555 INCHES FIRST END IN; Bore Nominal Diameter: 0.755 INCHES SECOND END IN; Hub Nominal Diameter: 0.984 INCHES SECOND END IN; Teeth Quantity: 51. 28 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.