The Gear,antibacklash,spur, cataloged under National Stock Number 3020-00-102-3754, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-102-3754 |
| Item Name | Gear,antibacklash,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.187 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.250 INCHES FIRST END IN |
| Backlash Designation | GRADE C |
| Teeth Quantity | 127 |
| Clamping Surface Nominal Length | 0.250 INCHES FIRST END IN |
| Surface Treatment Document and Classification | MIL-F-14072 FINISH E511 MIL SPEC SINGLE TREATMENT RESPONSE BODY |
| Surface Treatment Document and Classification | MIL-F-14072,FINSIH E300 MIL SPEC SINGLE TREATMENT RESPONSE HUB |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.281 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE HUB |
| Pitch Diameter | 1.5875 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 1.6125 INCHES IN |
| Surface Treatment | PASSIVATE HUB |
| Surface Treatment | ANODIZE BODY |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY 2024 BODY |
| Material | STEEL COMP 303 HUB |
| Attachment Method | CLAMP |
| Face Nominal Width | 0.104 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 |
| Reference | Meaning |
|---|---|
| SMB617444 | 5/1 Secondary reference General Dynamics Mission Systems, Inc. |
| SM-B-617444 | 3/2 Design control — primary reference U.S. Government activity |
| SMB617444 | C/1 Advisory reference — outside the item-of-supply concept Ultra Electronics Maritime Systems Inc Div Subsidiary of Ultra Electronics Holdings Limited |
NSN 3020-00-102-3754 is a Gear,antibacklash,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-102-3754: Bore Nominal Diameter: 0.187 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.250 INCHES FIRST END IN; Backlash Designation: GRADE C; Teeth Quantity: 127. 22 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.