The Gear,spur, cataloged under National Stock Number 3020-00-517-2189, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Ambac International Corporation Div Ambac International. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-517-2189 |
| Primary Part Number | 51981 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Ambac International Corporation Div Ambac International |
| Status | ACTIVE |
| Teeth Quantity | 84 |
| Nominal Distance Between Body Face and Protruding Hub End | 0.625 INCHES SECOND END IN |
| Body Style | PLAIN, SOLID |
| Nominal Outside Diameter | 2.6870 INCHES IN |
| Tooth Form | STANDARD |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL COMP 416 OVERALL |
| Face Nominal Width | 0.188 INCHES IN |
| Hub Nominal Diameter | 0.750 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.406 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | PLAIN SECOND END |
| Bore Nominal Diameter | 0.250 INCHES BOTH ENDS IN |
| Bore Style | PLAIN BOTH ENDS |
| Hub Style Designator | PINNED FIRST END |
| Pitch Diameter | 2.6250 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 51981 PRIMARY | Ambac International Corporation Div Ambac International (USA) |
| 979-1B563 | Gap Instrument Corp (USA) |
| 206-453 PRIMARY | Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp (USA) |
| B21561 | Litton Systems Inc Itek Optical Systems Div (USA) |
| 979-1B563 | Advanced Logic Resources Inc Dba Alr (USA) |
| R12023 | Seeburg Corp the Seeburg Products Div (USA) |
| 51981 | Arma Div Ambac Industries Inc |
NSN 3020-00-517-2189 is a Gear,spur, manufactured by Ambac International Corporation Div Ambac International, classified under FSC 3020 (No Item Name Available). Status: active.
NSN 3020-00-517-2189 has 7 cross-referenced part numbers: 51981 (Ambac International Corporation Div Ambac International), 979-1B563 (Gap Instrument Corp), 206-453 (Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp), B21561 (Litton Systems Inc Itek Optical Systems Div), 979-1B563 (Advanced Logic Resources Inc Dba Alr) and 2 more.
There are 8 known substitutes for 3020-00-517-2189: 2520-00-737-7651, 1660-00-887-6853, 1005-00-898-4201 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 51981: Teeth Quantity: 84; Nominal Distance Between Body Face and Protruding Hub End: 0.625 INCHES SECOND END IN; Body Style: PLAIN, SOLID; Nominal Outside Diameter: 2.6870 INCHES IN. 18 total characteristics are documented in the Federal Logistics Information System.