The Gear,spur, cataloged under National Stock Number 3020-00-424-5540, 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 Dresser Industries Inc Leroi Div. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 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 | 3020-00-424-5540 |
| Primary Part Number | 26-273 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Dresser Industries Inc Leroi Div |
| Status | ACTIVE |
| Bore Nominal Diameter | 15.497 INCHES BOTH ENDS IN |
| Teeth Quantity | 138 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Style Designator | HUBLESS |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 1050 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 17.2500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 17.450 INCHES IN |
| Material | STEEL COMP 1050 OVERALL |
| Face Nominal Width | 0.938 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 |
|---|---|
| 26-273 PRIMARY | Dresser Industries Inc Leroi Div (USA) |
| CS3020-0066 PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
NSN 3020-00-424-5540 is a Gear,spur, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-424-5540 has 2 manufacturer part numbers on file: 26-273 (Dresser Industries Inc Leroi Div), CS3020-0066 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).
2 possible matches (shared part number, not a government interchangeability claim): 5985-01-156-8960, 5120-01-646-7045. Verify interchangeability with system specifications before substitution.
Key specifications for 26-273: Bore Nominal Diameter: 15.497 INCHES BOTH ENDS IN; Teeth Quantity: 138; Body Style: PLAIN, SOLID; Bore Style: PLAIN BOTH ENDS. 11 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.