The Breather, cataloged under National Stock Number 3040-01-426-7720, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-426-7720 |
| Item Name | Breather |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Outside Diameter | 2.580 INCHES NOMINAL IN |
| Connection Type | THREADED |
| Thread Size and Series/type Designator | 3/4-14 NPT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| FBV12CML10B0571 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 057135-27 | 3/2 Design control — primary reference U.S. Government activity |
| 349913 | 5/9 Secondary reference Hyster-Yale Group, Inc. |
NSN 3040-01-426-7720 is a Breather, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-426-7720: Overall Height: 2.850 INCHES NOMINAL IN; Outside Diameter: 2.580 INCHES NOMINAL IN; Connection Type: THREADED; Special Features: FILTERATION MEDIA 10,MICROLOX FILTER,CLEANABLE,SINTERED BRONZE,RUST RESISTANT;TWO-WAY TYPE BREATHER. 3 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.