The Gear,worm, cataloged under National Stock Number 3020-00-116-3380, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-116-3380 |
| Primary Part Number | 8438158 |
| Item Name | Gear,worm |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| Thread Form Direction | RIGHT-HAND |
| Bore Nominal Diameter | 0.252 INCHES BOTH ENDS IN |
| Helix Angle | 8.1333 DEGREES |
| Hub Nominal Diameter | 0.352 INCHES FIRST END IN |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.188 INCHES FIRST END IN |
| Face Type | STRAIGHT |
| Nominal Overall Length | 0.876 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | FED-STD-66 AISISAE 1117 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.4380 INCHES NOMINAL IN |
| Hub Style Designator | PINNED FIRST END |
| Thread Form Quantity | 2 |
| Nominal Outside Diameter | 0.500 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 1117 OVERALL |
| Face Nominal Width | 0.687 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 |
| Part Number | Manufacturer |
|---|---|
| 8438158 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| Reference | Meaning |
|---|---|
| 3020001163380 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 3020-00-116-3380 is a Gear,worm, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-116-3380 has 1 manufacturer part number on file: 8438158 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
Key specifications for 8438158: Thread Form Direction: RIGHT-HAND; Bore Nominal Diameter: 0.252 INCHES BOTH ENDS IN; Helix Angle: 8.1333 DEGREES; Hub Nominal Diameter: 0.352 INCHES FIRST END IN. 17 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.