The Clamp,hub, cataloged under National Stock Number 3040-00-314-0487, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-314-0487 |
| Primary Part Number | 8389874 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Style Designator | ROUND SECTIONAL, TWO BOLT SECURED |
| Outside Diameter | 0.623 INCHES MINIMUM AND 0.624 INCHES MAXIMUM IN |
| Bore Diameter | 0.3830 INCHES NOMINAL IN |
| Thickness | 0.3920 INCHES NOMINAL IN |
| 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 |
|---|---|
| 8389874 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 570167 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-00-314-0487 is a Clamp,hub, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-314-0487 has 1 manufacturer part number on file: 8389874 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 5905-01-028-6457. Verify interchangeability with system specifications before substitution.
Key specifications for 8389874: Style Designator: ROUND SECTIONAL, TWO BOLT SECURED; Outside Diameter: 0.623 INCHES MINIMUM AND 0.624 INCHES MAXIMUM IN; Bore Diameter: 0.3830 INCHES NOMINAL IN; Thickness: 0.3920 INCHES NOMINAL IN. 4 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.