The Gear,bevel, cataloged under National Stock Number 3020-00-294-7550, 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 Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-294-7550 |
| Primary Part Number | A7403 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div |
| Status | ACTIVE |
| Keyway Nominal Width | 0.187 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.750 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.436 INCHES FIRST END IN |
| Teeth Quantity | 15 |
| Body Style | PLAIN, SOLID |
| Pitch Angle | 18.0667 DEGREES |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Teeth Type | STRAIGHT |
| Nominal Overall Length | 1.406 INCHES IN |
| Style Designator | PERIPHERAL FACE, BACK HUB PROTRUDING |
| Material Document and Classification | MIL-S-861,CLASS 405 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.8750 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 2.2120 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 405 OVERALL |
| Face Nominal Width | 0.875 INCHES IN |
| 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 |
|---|---|
| A7403 PRIMARY | Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div (USA) |
| A6010 PRIMARY | Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div (USA) |
| A8877 PRIMARY | Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div (USA) |
| A6407 PRIMARY | Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div (USA) |
| JA11288PC35 PRIMARY | Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div (USA) |
| JA8065PC35 PRIMARY | Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div (USA) |
NSN 3020-00-294-7550 is a Gear,bevel, manufactured by Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-294-7550 has 6 manufacturer part numbers on file: A7403 (Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div), A6010 (Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div), A8877 (Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div), A6407 (Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div), JA11288PC35 (Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div) and 1 more.
5 possible matches (shared part number, not a government interchangeability claim): 2990-00-314-0015, 5360-00-452-2249, 4920-00-759-2771. Verify interchangeability with system specifications before substitution.
Key specifications for A7403: Keyway Nominal Width: 0.187 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.750 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.436 INCHES FIRST END IN; Teeth Quantity: 15. 17 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.