The Gear,spur, cataloged under National Stock Number 3020-01-137-5997, 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 Honeywell International Inc. Div Aerospace - Torrance. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-137-5997 |
| Primary Part Number | 2045980-4 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.438 INCHES BOTH ENDS0.438 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.550 INCHES BOTH ENDS0.550 INCHES BOTH ENDS IN |
| Teeth Quantity | 1818 |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-C-13924,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLIDPLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDSPLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.032 INCHES BOTH ENDS0.032 INCHES BOTH ENDS IN |
| Precision Classification | QUALITY NUMBER 15QUALITY NUMBER 15 |
| Hardness Rating | 30.0 ROCKWELL C NOMINAL OVERALL30.0 ROCKWELL C NOMINAL OVERALL |
| Nominal Overall Length | 0.274 INCHES0.274 INCHES IN |
| Style Designator | PROTRUDING HUBSPROTRUDING HUBS |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALLMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.7134 INCHES NOMINAL0.7134 INCHES NOMINAL IN |
| Tooth Form | STANDARDSTANDARD |
| Hub Style Designator | PLAIN BOTH ENDSPLAIN BOTH ENDS |
| Nominal Outside Diameter | 0.823 INCHES0.823 INCHES IN |
| Surface Treatment | OXIDE OVERALLOXIDE OVERALL |
| Pressure Angle | 20.0000 DEGREES20.0000 DEGREES |
| Material | STEEL COMP 4340 OVERALL |
| Face Nominal Width | 0.205 INCHES0.205 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 |
|---|---|
| 2045980-4 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
NSN 3020-01-137-5997 is a Gear,spur, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-137-5997 has 1 manufacturer part number on file: 2045980-4 (Honeywell International Inc. Div Aerospace - Torrance).
Key specifications for 2045980-4: Bore Nominal Diameter: 0.438 INCHES BOTH ENDS0.438 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.550 INCHES BOTH ENDS0.550 INCHES BOTH ENDS IN; Teeth Quantity: 1818; Surface Treatment Document and Classification: MIL-C-13924,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-C-13924,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.