The Gear,spur, cataloged under National Stock Number 3020-00-238-5232, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 17 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 | 3020-00-238-5232 |
| Primary Part Number | 2638957 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.438 INCHES BOTH ENDS IN |
| Backlash Designation | GRADE C |
| Teeth Quantity | 28 |
| Body Style | WEBBED, OFFSET, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Precision Classification | QUALITY NUMBER 9 |
| Style Designator | HUBLESS, RECESSED BODY |
| Material Document and Classification | AMS 5643F,COND PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.8750 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Spline Quantity | 13 BOTH ENDS |
| Nominal Outside Diameter | 0.938 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 630 OVERALL |
| Spline Pitch Diameter | 0.4063 INCHES NOMINAL BOTH ENDS IN |
| Body Recess Nominal Depth | 0.067 INCHES FIRST END IN |
| Face Nominal Width | 0.400 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 |
|---|---|
| 2638957 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3020-00-238-5232 is a Gear,spur, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-238-5232 has 1 manufacturer part number on file: 2638957 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 2638957: Bore Nominal Diameter: 0.438 INCHES BOTH ENDS IN; Backlash Designation: GRADE C; Teeth Quantity: 28; Body Style: WEBBED, OFFSET, SOLID. 17 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.