The Gearshaft,spur, cataloged under National Stock Number 3040-01-117-8458, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Clayton Manufacturing Company. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-117-8458 |
| Primary Part Number | UH-20871 |
| Item Name | Gearshaft,spur |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Clayton Manufacturing Company |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL COMP 4140 |
| Shaft Largest Diameter | 0.669 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN |
| Shaft End Size | 0.669 INCHES AND 0.437 INCHES IN |
| Teeth Quantity | 13 |
| Gear Outside Diameter | 1.038 INCHES MINIMUM AND 1.042 INCHES MAXIMUM IN |
| Longer Shaft Segment Length | 3.917 INCHES NOMINAL IN |
| Gear Material | STEEL COMP 4130 |
| Shaft End Type | KEYWAY INDENTED FLAT AND FLATTED |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 20.0000 DEGREES |
| Face Width | 0.750 INCHES NOMINAL 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 |
|---|---|
| UH-20871 PRIMARY | Clayton Manufacturing Company (USA) |
NSN 3040-01-117-8458 is a Gearshaft,spur, manufactured by Clayton Manufacturing Company, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-117-8458 has 1 manufacturer part number on file: UH-20871 (Clayton Manufacturing Company).
Key specifications for UH-20871: Shaft Type: SHOULDERED; Shaft Material: STEEL COMP 4140; Shaft Largest Diameter: 0.669 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN; Shaft End Size: 0.669 INCHES AND 0.437 INCHES IN. 12 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.