The Gear,worm, cataloged under National Stock Number 3020-00-243-2608, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-243-2608 |
| Item Name | Gear,worm |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Thread Form Direction | RIGHT-HAND |
| Keyway Nominal Width | 0.249 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.875 INCHES BOTH ENDS IN |
| Helix Angle | 9.4665 DEGREES |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Face Type | STRAIGHT |
| Style Designator | HUBLESS |
| Pitch Diameter | 1.5000 INCHES NOMINAL IN |
| Thread Form Quantity | 2 |
| Nominal Outside Diameter | 1.750 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.547 INCHES BOTH ENDS IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 1.750 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 |
|---|---|
| NDT1473B | 5/9 Secondary reference U.S. Government activity |
| 16101933 | C/1 Advisory reference — outside the item-of-supply concept Fairbanks Morse, Llc |
| 16101933 | 3/9 Design control — primary reference U.S. Government activity |
| TD1473B | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-243-2608 is a Gear,worm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 2510-01-631-4949. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-243-2608: Thread Form Direction: RIGHT-HAND; Keyway Nominal Width: 0.249 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.875 INCHES BOTH ENDS IN; Helix Angle: 9.4665 DEGREES. 14 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.