The Collar,shaft, cataloged under National Stock Number 3040-00-314-7708, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-314-7708 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 125 MICROINCHES OVERALL |
| Countersink Major Diameter and Location | 0.0700 INCHES NOMINAL SINGLE HOLE IN |
| Securing Hole Type and Location | THREADED-COUNTERSUNK SINGLE HOLE |
| Style Designator | PLAIN ROUND |
| Material Document and Classification | QQ-B-626, ALLOY 377, 1/2H FED SPEC SINGLE MATERIAL RESPONSE |
| Screw Thread Series Designator and Location | SINGLE HOLE UNF |
| Outside Diameter | 0.360 INCHES NOMINAL IN |
| Countersunk Hole Angle in Deg and Location | 45.0 SINGLE HOLE |
| Nominal Thread Size | 0.060 INCHES SINGLE HOLE IN |
| Securing Hole Quantity | 1 |
| Bore Diameter | 0.2080 INCHES MINIMUM AND 0.2120 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 377 |
| Thickness | 0.014 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 |
|---|---|
| 397178 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-314-7708 is a Collar,shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3040-01-180-0943. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-00-314-7708: Surface Finish: 125 MICROINCHES OVERALL; Countersink Major Diameter and Location: 0.0700 INCHES NOMINAL SINGLE HOLE IN; Securing Hole Type and Location: THREADED-COUNTERSUNK SINGLE HOLE; Style Designator: PLAIN ROUND. 13 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.