The Gear Rack, cataloged under National Stock Number 3020-00-256-3228, 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 L3harris Interstate Electronics Corporation. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-256-3228 |
| Primary Part Number | 91900187 |
| Item Name | Gear Rack |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | L3harris Interstate Electronics Corporation |
| Status | ACTIVE |
| Teeth Quantity | 274 |
| Pitch Height | 0.4580 INCHES MINIMUM AND 0.4590 INCHES MAXIMUM IN |
| Teeth Type | SPUR |
| Nominal Overall Length | 18.000 INCHES IN |
| Style Designator | ROUND |
| Material Document and Classification | QQ-S-763,CLASS 416 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Tooth Form | STUB |
| Nominal Outside Diameter | 0.250 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 416 OVERALL |
| Nominal Thickness | 0.219 INCHES IN |
| Face Nominal Width | 0.156 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 |
NSN 3020-00-256-3228 is a Gear Rack, manufactured by L3harris Interstate Electronics Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-256-3228 has 2 manufacturer part numbers on file: 91900187 (L3harris Interstate Electronics Corporation), AG19 (Roller Bearing Co of America, Inc Div Pic Design).
Key specifications for 91900187: Teeth Quantity: 274; Pitch Height: 0.4580 INCHES MINIMUM AND 0.4590 INCHES MAXIMUM IN; Teeth Type: SPUR; Nominal Overall Length: 18.000 INCHES IN. 13 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.