The Gear,spur, cataloged under National Stock Number 3020-00-086-1978, 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 Lockheed Martin Corporation Div Rms. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-086-1978 |
| Primary Part Number | SG48-054-007 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.2498 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.438 INCHES FIRST END IN |
| Teeth Quantity | 54 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.219 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 10 |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-S-763,CLASS303 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.1250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PINNED FIRST END |
| Nominal Outside Diameter | 1.167 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 303 OVERALL |
| Face Nominal Width | 0.188 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 |
|---|---|
| SG48-054-007 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| P48S28-54 | 5/9 Secondary reference W. M. Berg, Inc. |
NSN 3020-00-086-1978 is a Gear,spur, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-086-1978 has 1 manufacturer part number on file: SG48-054-007 (Lockheed Martin Corporation Div Rms).
Key specifications for SG48-054-007: Bore Nominal Diameter: 0.2498 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.438 INCHES FIRST END IN; Teeth Quantity: 54; Body Style: PLAIN, SOLID. 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.