The Gear,spur, cataloged under National Stock Number 3020-00-973-4971, 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 Renk America Llc Div Renk America. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-00-973-4971 |
| Primary Part Number | 517126 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Renk America Llc Div Renk America |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.820 INCHES BOTH ENDS IN |
| Teeth Quantity | 12 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 1 PLAIN TRANSVERSELY THROUGH FACE |
| Mounting Hole Nominal Diameter | 0.125 INCHES TRANSVERSELY THROUGH FACE IN |
| Style Designator | HUBLESS |
| Material Document and Classification | QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 2.330 INCHES IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL COMP 8615 OR STEEL COMP 8620 OR STEEL COMP 8720 OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 1.500 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 |
|---|---|
| 517126 PRIMARY | Renk America Llc Div Renk America (USA) |
| Reference | Meaning |
|---|---|
| 7403085 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 3020-00-973-4971 is a Gear,spur, manufactured by Renk America Llc Div Renk America, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-973-4971 has 1 manufacturer part number on file: 517126 (Renk America Llc Div Renk America).
2 possible matches (shared part number, not a government interchangeability claim): 6135-01-038-6179, 5340-01-703-1821. Verify interchangeability with system specifications before substitution.
Key specifications for 517126: Bore Nominal Diameter: 0.820 INCHES BOTH ENDS IN; Teeth Quantity: 12; Body Style: PLAIN, SOLID; Bore Style: PLAIN BOTH ENDS. 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.