The Collar,shaft, cataloged under National Stock Number 3040-00-580-9549, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-580-9549 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Securing Hole Type and Location | THREADED SINGLE HOLE |
| Largest Diameter Length | 0.219 INCHES NOMINAL IN |
| Style Designator | ROUND STEPPED |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 303 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 30303 ASSN STD SINGLE MATERIAL RESPONSE |
| Screw Thread Series Designator and Location | SINGLE HOLE UNIFIED NATIONAL COARSE (UNC) |
| Outside Diameter | 0.750 INCHES NOMINAL IN |
| Nominal Thread Size | 0.138 INCHES SINGLE HOLE IN |
| Small End Diameter | 0.562 INCHES NOMINAL IN |
| Securing Hole Quantity | 1 |
| Bore Diameter | 0.2510 INCHES NOMINAL IN |
| Material | STEEL COMP 303 |
| Thickness | 0.312 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 |
|---|---|
| 735114 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-580-9549 is a Collar,shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5945-01-040-0051, 2840-01-486-3632. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-00-580-9549: Securing Hole Type and Location: THREADED SINGLE HOLE; Largest Diameter Length: 0.219 INCHES NOMINAL IN; Style Designator: ROUND STEPPED; Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 303 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 30303 ASSN STD SINGLE MATERIAL RESPONSE. 12 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.