The Gear,helical, cataloged under National Stock Number 3020-00-902-5688, 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 Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc. Government technical data includes 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-902-5688 |
| Primary Part Number | 11-0641 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.329 INCHES BOTH ENDS IN |
| Helix Angle | 48.9166 DEGREES |
| Teeth Quantity | 15 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 0.335 INCHES FIRST END IN |
| Tooth Direction | LEFT |
| Bore Style | INVOLUTE SPLINE SECOND END |
| Bore Style | W/COUNTERBORE FIRST END |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.4739 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Spline Quantity | 14 SECOND END |
| Nominal Outside Diameter | 0.513 INCHES IN |
| Surface Treatment | OXIDE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 416 OVERALL |
| Counterbore Nominal Depth | 0.145 INCHES FIRST END IN |
| Spline Pitch Diameter | 0.2917 INCHES NOMINAL SECOND END IN |
| Face Nominal Width | 0.320 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 |
|---|---|
| 11-0641 PRIMARY | Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc (USA) |
| Reference | Meaning |
|---|---|
| 11-0641 | 5/9 Secondary reference Kilgore Flares Company Llc |
| 11-0641 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-902-5688 is a Gear,helical, manufactured by Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-902-5688 has 1 manufacturer part number on file: 11-0641 (Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc).
3 possible matches (shared part number, not a government interchangeability claim): 5970-01-013-3352, 9160-01-086-0146, 5315-01-687-5368. Verify interchangeability with system specifications before substitution.
Key specifications for 11-0641: Bore Nominal Diameter: 0.329 INCHES BOTH ENDS IN; Helix Angle: 48.9166 DEGREES; Teeth Quantity: 15; Body Style: PLAIN, SOLID. 21 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.