The Gear,spur, cataloged under National Stock Number 3020-00-026-8944, 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 Tyco Fire Products Lp. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-00-026-8944 |
| Primary Part Number | 11-02639 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| Keyway Nominal Width | 0.127 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.6255 INCHES BOTH ENDS IN |
| Teeth Quantity | 45 |
| Body Style | PLAIN, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Style Designator | HUBLESS |
| Material Document and Classification | FED STD 66,AISI/SAE 1030 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.7480 INCHES MINIMUM AND 3.7500 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 3.9170 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.4180 INCHES BOTH ENDS IN |
| Surface Treatment | CADMIUM OVERALL |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL COMP 5155 OVERALL |
| Face Nominal Width | 0.375 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 |
|---|---|
| 11-02639 PRIMARY | Tyco Fire Products Lp (USA) |
| Reference | Meaning |
|---|---|
| SC2639 | 5/9 Secondary reference Tyco Fire Products Lp |
| 801E6027 | 5/9 Secondary reference Kersey / American Lafrance a Div of Figgie International Inc |
NSN 3020-00-026-8944 is a Gear,spur, manufactured by Tyco Fire Products Lp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-026-8944 has 1 manufacturer part number on file: 11-02639 (Tyco Fire Products Lp).
Key specifications for 11-02639: Keyway Nominal Width: 0.127 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.6255 INCHES BOTH ENDS IN; Teeth Quantity: 45; Body Style: PLAIN, SOLID. 15 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.