The Bellows,pressure, cataloged under National Stock Number 3010-00-653-3458, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Cliflex Bellows Corporation. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3010-00-653-3458 |
| Primary Part Number | 12521-2 |
| Item Name | Bellows,pressure |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Cliflex Bellows Corporation |
| Status | ACTIVE |
| 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 |
|---|---|
| 12521-2 PRIMARY | Cliflex Bellows Corporation (USA) |
| 457B447PC1 | Cliflex Bellows Corporation (USA) |
| Reference | Meaning |
|---|---|
| 437B447-001 | 5/9 Secondary reference General Electric Company |
| 437B447-1 | 5/9 Secondary reference General Electric Company |
NSN 3010-00-653-3458 is a Bellows,pressure, manufactured by Cliflex Bellows Corporation, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-00-653-3458 has 2 manufacturer part numbers on file: 12521-2 (Cliflex Bellows Corporation), 457B447PC1 (Cliflex Bellows Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-201-3742. Verify interchangeability with system specifications before substitution.
Key specifications for 12521-2: Special Features: BRASS AND COPPER ALLOY; 0D 2.938 IN.; COMPRESSED LG 3.228 IN.; ID 2.120 IN.; 20 TO 40 PSI; WALL 2 PLY 0.007 TO 0.008 IN.; EIGHT CONVOLUTIONS IN. 0 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.