The Gear,spur, cataloged under National Stock Number 3020-00-917-7593, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Southern Gear & Machine Inc. Government technical data includes 18 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 | 3020-00-917-7593 |
| Primary Part Number | 155-21 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Southern Gear & Machine Inc |
| Status | ACTIVE |
| Body Style | PLAIN, SOLID |
| Teeth Quantity | 21 |
| Pitch Diameter | 0.4375 INCHES NOMINAL IN |
| Pressure Angle | 20.0000 DEGREES |
| Precision Classification | QUALITY NUMBER 10 |
| Hub Style Designator | PINNED FIRST END |
| Bore Nominal Diameter | 0.1875 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.3750 INCHES FIRST END IN |
| Tooth Form | STANDARD |
| Backlash Designation | GRADE C |
| Face Nominal Width | 0.125 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nominal Outside Diameter | 0.4790 INCHES IN |
| Bore Style | PLAIN BOTH ENDS |
| Material | STEEL COMP 303S OVERALL |
| Style Designator | PROTRUDING HUB |
| Nominal Distance Between Body Face and Protruding Hub End | 0.2500 INCHES FIRST END IN |
| Material Document and Classification | MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 155-21 PRIMARY | Southern Gear & Machine Inc (USA) |
NSN 3020-00-917-7593 is a Gear,spur, manufactured by Southern Gear & Machine Inc, classified under FSC 3020 (No Item Name Available). Status: active.
NSN 3020-00-917-7593 has 1 cross-referenced part number: 155-21 (Southern Gear & Machine Inc).
There are 11 known substitutes for 3020-00-917-7593: 6680-00-041-3537, 5950-00-087-6706, 3110-00-100-0768 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 155-21: Body Style: PLAIN, SOLID; Teeth Quantity: 21; Pitch Diameter: 0.4375 INCHES NOMINAL IN; Pressure Angle: 20.0000 DEGREES. 18 total characteristics are documented in the Federal Logistics Information System.