The Gear,spur, cataloged under National Stock Number 3020-01-086-8276, 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 Koehlke Components 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-086-8276 |
| Primary Part Number | SM-B-879363 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Koehlke Components Inc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 BEARING AND 2 SPRING PIN AND 1 WASHER |
| Bore Nominal Diameter | 3.063 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 4.247 INCHES FIRST END IN |
| Teeth Quantity | 240 |
| Body Style | WEBBED, OFFSET, 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 | 0.220 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 10 |
| Mounting Hole Nominal Diameter | 0.063 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | AMS 5342 OR 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 5.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 5.042 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL CORROSION RESISTING OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.250 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 |
|---|---|
| SM-B-879363 | Koehlke Components Inc (USA) |
| Reference | Meaning |
|---|---|
| SM-B-879363 | 5/2 Secondary reference U.S. Government activity |
| SM-B-879363 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-086-8276 is a Gear,spur, manufactured by Koehlke Components Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-086-8276 has 1 manufacturer part number on file: SM-B-879363 (Koehlke Components Inc).
Key specifications for SM-B-879363: Furnished Items and Quantity: 1 BEARING AND 2 SPRING PIN AND 1 WASHER; Bore Nominal Diameter: 3.063 INCHES BOTH ENDS IN; Hub Nominal Diameter: 4.247 INCHES FIRST END IN; Teeth Quantity: 240. 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.