The Gear,spur, cataloged under National Stock Number 3020-00-903-9631, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Babcock and Wilcox Co. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-903-9631 |
| Primary Part Number | 20050-1 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Babcock and Wilcox Co |
| Status | ACTIVE |
| Hub Nominal Diameter | 1.375 INCHES SECOND END IN |
| Bore Nominal Diameter | 0.245 INCHES BOTH ENDS IN |
| Hub Style Designator | PLAIN BOTH ENDS |
| Face Nominal Width | 0.125 INCHES IN |
| Hub Nominal Diameter | 0.750 INCHES FIRST END IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 2.958 INCHES IN |
| Pitch Diameter | 2.9166 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Teeth Quantity | 140 |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Surface Treatment | ANODIZE OVERALL |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Spline Pitch Diameter | 0.2290 INCHES NOMINAL BOTH ENDS IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.109 INCHES SECOND END IN |
| Spline Quantity | 22 BOTH ENDS |
| Pressure Angle | 20.0000 DEGREES |
| Nominal Distance Between Body Face and Protruding Hub End | 0.266 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Body Style | PLAIN, WITH LIGHTENING HOLES |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20050-1 | Babcock and Wilcox Co (USA) |
NSN 3020-00-903-9631 is a Gear,spur, manufactured by Babcock and Wilcox Co, classified under FSC 3020 (No Item Name Available). Status: active.
NSN 3020-00-903-9631 has 1 cross-referenced part number: 20050-1 (Babcock and Wilcox Co).
There are 11 known substitutes for 3020-00-903-9631: 5342-00-485-2926, 5365-00-556-6778, 4320-00-902-6403 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20050-1: Hub Nominal Diameter: 1.375 INCHES SECOND END IN; Special Features: COUNTERBORE FIRST END,0.241 IN.DIA; 0.280 IN.DEP IN; Bore Nominal Diameter: 0.245 INCHES BOTH ENDS IN; Hub Style Designator: PLAIN BOTH ENDS. 22 total characteristics are documented in the Federal Logistics Information System.