The Brake Drum, cataloged under National Stock Number 3040-00-653-7726, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-00-653-7726 |
| Primary Part Number | 6537726 |
| Item Name | Brake Drum |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| Mounting Hole Quantity | 6 |
| FSC Application Data | BRAKE ASSY,CARRIAGE,HOWITZER,105MM,M2A2 MM |
| Balancing Pad | NOT INCLUDED |
| Mounting Hole Spacing | EQUALLY SPACED ON 6 IN. BOLT CIRCLE IN |
| Braking Surface Width | 2.375 INCHES NOMINAL IN |
| Inspection Hole | INCLUDED |
| Mounting Hole Diameter | 0.453 INCHES NOMINAL IN |
| Overall Outside Diameter | 15.562 INCHES NOMINAL IN |
| Braking Surface Location | INTERNAL |
| Oil Drain Hole | INCLUDED |
| Center Hole Diameter | 4.376 INCHES NOMINAL IN |
| Braking Surface Diameter | 13.995 INCHES NOMINAL IN |
| Material | IRON CAST OVERALL |
| Cooling Fin | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 6537726 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| Reference | Meaning |
|---|---|
| 1015006537726 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 3040-00-653-7726 is a Brake Drum, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-653-7726 has 1 manufacturer part number on file: 6537726 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
Key specifications for 6537726: Mounting Hole Quantity: 6; FSC Application Data: BRAKE ASSY,CARRIAGE,HOWITZER,105MM,M2A2 MM; Balancing Pad: NOT INCLUDED; Mounting Hole Spacing: EQUALLY SPACED ON 6 IN. BOLT CIRCLE IN. 14 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.
NSN 3040-00-653-7726 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.