The Collar,shaft, cataloged under National Stock Number 3040-01-138-1989, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-138-1989 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Securing Hole Type and Location | UNTHREADED ALL HOLES |
| Largest Diameter Length | 0.250 INCHES NOMINAL IN |
| Outside Diameter | 4.625 INCHES NOMINAL IN |
| Hole Diameter and Location | 0.3125 INCHES NOMINAL ALL HOLES IN |
| Angle Between Centerlines of Securing Holes in Deg | 180.0 |
| Small End Diameter | 3.625 INCHES NOMINAL IN |
| Securing Hole Quantity | 2 |
| Bore Diameter | 2.5120 INCHES MINIMUM AND 2.5150 INCHES MAXIMUM IN |
| Material | COPPER ALLOY |
| Thickness | 3.375 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 |
| Reference | Meaning |
|---|---|
| 4684683 | D/9 Drawing number reference only U.S. Government activity |
| 4684683 ITEM 1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-138-1989 is a Collar,shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-138-1989: Securing Hole Type and Location: UNTHREADED ALL HOLES; Largest Diameter Length: 0.250 INCHES NOMINAL IN; Outside Diameter: 4.625 INCHES NOMINAL IN; Hole Diameter and Location: 0.3125 INCHES NOMINAL ALL HOLES IN. 10 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.