The Lining,friction, cataloged under National Stock Number 3040-01-278-7537, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Triumph Manufacturing Company, Inc.. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-278-7537 |
| Primary Part Number | 6129485 |
| Item Name | Lining,friction |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Triumph Manufacturing Company, Inc. |
| Status | ACTIVE |
| Hole Arrangement Style | INDEFINITE |
| Lining Style | SEGMENT PLAIN |
| Attachment Method | RIVETED |
| Width | 1.000 INCHES NOMINAL IN |
| Minor Radius | 3.300 INCHES NOMINAL IN |
| Material | COPPER ALLOY FRICTION LINING |
| Thickness | 0.810 INCHES NOMINAL IN |
| Hole Type and Quantity | 2 COUNTERSUNK |
| 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 |
|---|---|
| 6129485 PRIMARY | Triumph Manufacturing Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| EN DM44540 ITEM 7 | 5/9 Secondary reference U.S. Government activity |
| EN DM44540 | D/9 Drawing number reference only U.S. Government activity |
| 87684-1508 PC 7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-278-7537 is a Lining,friction, manufactured by Triumph Manufacturing Company, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-278-7537 has 1 manufacturer part number on file: 6129485 (Triumph Manufacturing Company, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-278-7538. Verify interchangeability with system specifications before substitution.
Key specifications for 6129485: Hole Arrangement Style: INDEFINITE; Lining Style: SEGMENT PLAIN; Attachment Method: RIVETED; Width: 1.000 INCHES NOMINAL IN. 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.