The Gear,worm Wheel, cataloged under National Stock Number 3020-01-438-5631, 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 Pyser Sgi Limited. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-438-5631 |
| Primary Part Number | B29203-1 |
| Item Name | Gear,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Pyser Sgi Limited |
| Status | ACTIVE |
| Teeth Quantity | 48 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN FIRST END |
| Face Type | CONCAVE |
| Style Designator | PROTRUDING HUB |
| Material | COPPER OVERALL |
| Face Nominal Width | 0.1900 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 |
|---|---|
| B29203-1 | Pyser Sgi Limited (GBR) |
| Reference | Meaning |
|---|---|
| B29203-1 | 3/9 Design control — primary reference Richards Imagery Interpretation Systems, L.l.c. |
NSN 3020-01-438-5631 is a Gear,worm Wheel, manufactured by Pyser Sgi Limited, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-438-5631 has 1 manufacturer part number on file: B29203-1 (Pyser Sgi Limited).
Key specifications for B29203-1: Teeth Quantity: 48; Body Style: PLAIN, SOLID; Tooth Direction: RIGHT; Bore Style: PLAIN FIRST END. 8 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.