The Gear,spur, cataloged under National Stock Number 3020-00-135-5705, 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 Hunt Valve Company, Inc.. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-135-5705 |
| Primary Part Number | 0A21-60280 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Hunt Valve Company, Inc. |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.750 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.250 INCHES FIRST END IN |
| Teeth Quantity | 18 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 2 PLAIN TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.500 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.190 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 1.000 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 1.5000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 1.665 INCHES IN |
| Surface Treatment | PAINT OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.500 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 |
|---|---|
| 0A21-60280 | Hunt Valve Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 68C33239 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-135-5705 is a Gear,spur, manufactured by Hunt Valve Company, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-135-5705 has 1 manufacturer part number on file: 0A21-60280 (Hunt Valve Company, Inc.).
Key specifications for 0A21-60280: Bore Nominal Diameter: 0.750 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.250 INCHES FIRST END IN; Teeth Quantity: 18; Body Style: PLAIN, SOLID. 20 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.