The Main Gearbox Tool S, cataloged under National Stock Number 4920-01-518-4064, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Form Fit & Function Llc Div F3. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-518-4064 |
| Primary Part Number | 449-240-025-101 |
| Item Name | Main Gearbox Tool S |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Form Fit & Function Llc Div F3 |
| Status | ACTIVE |
| Accessory Components and Quantity | SPINDLE PULLER 1; PILLOW BLOCK JACK-SCREW 1; GO GAUGE 1; NO-GO GAUGE 1; GO-NO-GO GAUGE 1; HANDLE 1; EXPANSION PINS 2; BOLT 1 |
| 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 |
|---|---|
| 449-240-025-101 | Form Fit & Function Llc Div F3 (USA) |
| Reference | Meaning |
|---|---|
| 449-240-025-101 | 3/2 Design control — primary reference U.S. Government activity |
| 63GF-100013-101 | 5/9 Secondary reference Bell Aerospace Services Inc. |
NSN 4920-01-518-4064 is a Main Gearbox Tool S, manufactured by Form Fit & Function Llc Div F3, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-518-4064 has 1 manufacturer part number on file: 449-240-025-101 (Form Fit & Function Llc Div F3).
Key specifications for 449-240-025-101: Overall Height: 14.000 INCHES NOMINAL IN; Overall Length: 22.000 INCHES NOMINAL IN; Overall Width: 20.000 INCHES NOMINAL IN; Accessory Components and Quantity: SPINDLE PULLER 1; PILLOW BLOCK JACK-SCREW 1; GO GAUGE 1; NO-GO GAUGE 1; GO-NO-GO GAUGE 1; HANDLE 1; EXPANSION PINS 2; BOLT 1. 1 specification is 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.