The Gear,helical, cataloged under National Stock Number 3020-00-849-3252, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-849-3252 |
| Primary Part Number | AD1-20 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Roller Bearing Co of America, Inc Div Pic Design |
| Status | ACTIVE |
| Nominal Outside Diameter | 0.630 INCHES IN |
| Pitch Diameter | 0.5882 INCHES MINIMUM AND 0.5892 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Teeth Type | SINGLE HELIX |
| Material | STEEL COMP 303S AND STEEL COMP 303SE OVERALL |
| Style Designator | PROTRUDING HUB |
| Hub Style Designator | PINNED FIRST END |
| Body Style | PLAIN, SOLID |
| Face Nominal Width | 0.187 INCHES IN |
| Tooth Form | STANDARD |
| Helix Angle | 45.0000 DEGREES |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES FIRST END IN |
| Material Document and Classification | MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Hardness Rating | 75.0 ROCKWELL B MINIMUM AND 83.0 ROCKWELL B MAXIMUM OVERALL |
| Tooth Direction | LEFT |
| Hub Nominal Diameter | 0.500 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Bore Nominal Diameter | 0.250 INCHES BOTH ENDS IN |
| Teeth Quantity | 20 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 3020-00-849-3252 is a Gear,helical, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 3020 (No Item Name Available). Status: active.
NSN 3020-00-849-3252 has 3 cross-referenced part numbers: HG73 (Secs Inc), AD1-20 (Roller Bearing Co of America, Inc Div Pic Design), H48S28L20 (W. M. Berg, Inc.).
There are 2 known substitutes for 3020-00-849-3252: 6210-01-199-7227, 3510-01-553-2777. Verify interchangeability with system specifications before substitution.
Key specifications for AD1-20: Nominal Outside Diameter: 0.630 INCHES IN; Pitch Diameter: 0.5882 INCHES MINIMUM AND 0.5892 INCHES MAXIMUM IN; Surface Treatment: PASSIVATE OVERALL; Teeth Type: SINGLE HELIX. 21 total characteristics are documented in the Federal Logistics Information System.