The Brake Drum, cataloged under National Stock Number 3040-00-019-5175, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-00-019-5175 |
| Primary Part Number | 9977320 |
| Item Name | Brake Drum |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Mounting Hole Quantity | 6 |
| Balancing Pad | NOT INCLUDED |
| Mounting Hole Spacing | EQUALLY SPACED ON 10.500 IN. BOLT CIRCLE IN |
| Braking Surface Width | 4.688 INCHES NOMINAL IN |
| Inspection Hole | INCLUDED |
| Mounting Hole Diameter | 0.516 INCHES NOMINAL IN |
| Overall Outside Diameter | 16.500 INCHES NOMINAL IN |
| Braking Surface Location | INTERNAL |
| Oil Drain Hole | NOT INCLUDED |
| Center Hole Diameter | 9.000 INCHES MINIMUM AND 9.005 INCHES MAXIMUM IN |
| Braking Surface Diameter | 15.000 INCHES MINIMUM AND 15.010 INCHES MAXIMUM IN |
| Material | IRON CAST 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 |
|---|---|
| 9977320 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 1913 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-00-019-5175 is a Brake Drum, manufactured by Us Army Aviation and Missile Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-019-5175 has 1 manufacturer part number on file: 9977320 (Us Army Aviation and Missile Command).
Key specifications for 9977320: Mounting Hole Quantity: 6; Balancing Pad: NOT INCLUDED; Mounting Hole Spacing: EQUALLY SPACED ON 10.500 IN. BOLT CIRCLE IN; Braking Surface Width: 4.688 INCHES NOMINAL IN. 13 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.