The Brake Drum, cataloged under National Stock Number 3040-01-331-2993, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-331-2993 |
| Primary Part Number | 1117492 |
| Item Name | Brake Drum |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Adjustment Hole | NOT INCLUDED |
| Balancing Pad | NOT INCLUDED |
| Inspection Hole | NOT INCLUDED |
| Braking Surface Location | EXTERNAL |
| Oil Drain Hole | NOT INCLUDED |
| Center Hole Diameter | 1.562 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Cooling Fin | NOT INCLUDED |
| 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 |
|---|---|
| 315504 FIN 13 | Lake Shore Systems, Inc. (USA) |
| 1117492 PRIMARY | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 315504 | D/9 Drawing number reference only Lake Shore Systems, Inc. |
NSN 3040-01-331-2993 is a Brake Drum, manufactured by Lake Shore Systems, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-331-2993 has 2 manufacturer part numbers on file: 315504 FIN 13 (Lake Shore Systems, Inc.), 1117492 (Lake Shore Systems, Inc.).
Key specifications for 1117492: Adjustment Hole: NOT INCLUDED; Balancing Pad: NOT INCLUDED; Inspection Hole: NOT INCLUDED; Braking Surface Location: EXTERNAL. 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.