The Brake Drum, cataloged under National Stock Number 3040-00-734-9142, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is New Venture Gear Inc New Process Gear Div. Government technical data includes 15 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. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-734-9142 |
| Primary Part Number | 37122 |
| Item Name | Brake Drum |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | New Venture Gear Inc New Process Gear Div |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| FSC Application Data | TRANSMISSION,VEHICULAR |
| Adjustment Hole | NOT INCLUDED |
| Balancing Pad | NOT INCLUDED |
| Mounting Hole Spacing | EQUALLY SPACED ON 2-13/16 IN. BOLT CIRCLE IN |
| Braking Surface Width | 2.250 INCHES NOMINAL IN |
| Inspection Hole | NOT INCLUDED |
| Mounting Hole Diameter | 0.500 INCHES NOMINAL IN |
| Overall Outside Diameter | 7.813 INCHES NOMINAL IN |
| Braking Surface Location | EXTERNAL |
| Oil Drain Hole | NOT INCLUDED |
| Center Hole Diameter | 2.566 INCHES MINIMUM AND 2.568 INCHES MAXIMUM IN |
| Braking Surface Diameter | 7.813 INCHES NOMINAL 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 |
NSN 3040-00-734-9142 is a Brake Drum, manufactured by New Venture Gear Inc New Process Gear Div, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-734-9142 has 2 manufacturer part numbers on file: 37122 (New Venture Gear Inc New Process Gear Div), 7349142 (U S Army Tank Automotive Command Amsta-Im-Mm).
3 possible matches (shared part number, not a government interchangeability claim): 1630-01-034-6209, 5355-01-123-8561, 5340-01-682-8731. Verify interchangeability with system specifications before substitution.
Key specifications for 37122: Mounting Hole Quantity: 4; FSC Application Data: TRANSMISSION,VEHICULAR; Adjustment Hole: NOT INCLUDED; Balancing Pad: NOT INCLUDED. 15 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.