The Gear,internal, cataloged under National Stock Number 3020-00-616-7534, 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 Breeze-Eastern Llc. Government technical data includes 29 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-616-7534 |
| Primary Part Number | BL-7725 |
| Item Name | Gear,internal |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Breeze-Eastern Llc |
| Status | ACTIVE |
| Teeth Quantity | 136 |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 2.7500 INCHES FIRST END IN |
| Tooth Direction | RIGHT |
| Mounting Hole Type and Quantity | 2 COUNTERSUNK AND 6 THREADED TRANSVERSELY THROUGH FACE |
| First Step Nominal Length | 0.139 INCHES SECOND END IN |
| Mounting Hole Nominal Diameter | 0.116 INCHES TRANSVERSELY THROUGH FACE IN |
| Teeth Type | SPUR |
| Nominal Overall Length | 0.844 INCHES IN |
| Style Designator | RECESSED RING |
| Material Document and Classification | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.7055 INCHES NOMINAL IN |
| Tooth Form | SPECIAL |
| First Step Nominal Diameter | 1.812 INCHES SECOND END IN |
| Features Provided | ALIGNMENT HOLE |
| Hub Style Designator | 1 STEP SECOND END |
| Mounting Hole Nominal Thread Size | 0.112 INCHES TRANSVERSELY THROUGH FACE IN |
| End Nominal Length | 0.427 INCHES SECOND END IN |
| Nominal Outside Diameter | 2.8735 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 40 TRANSVERSELY THROUGH FACE |
| Surface Treatment | ANODIZE OVERALL |
| End Nominal Diameter | 1.300 INCHES SECOND END IN |
| Pressure Angle | 37.0000 DEGREES |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Counterbore Nominal Depth | 0.109 INCHES FIRST END IN |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH FACE |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.047 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 |
|---|---|
| BL-7725 PRIMARY | Breeze-Eastern Llc (USA) |
NSN 3020-00-616-7534 is a Gear,internal, manufactured by Breeze-Eastern Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-616-7534 has 1 manufacturer part number on file: BL-7725 (Breeze-Eastern Llc).
Key specifications for BL-7725: Teeth Quantity: 136; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Body Style: PLAIN, SOLID; Counterbore Nominal Diameter: 2.7500 INCHES FIRST END IN. 29 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.