The Collar,shaft, cataloged under National Stock Number 3040-01-142-1641, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is H-K Connecticut Holding Company. Government technical data includes 11 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. 3 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 | 3040-01-142-1641 |
| Primary Part Number | 15518 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | H-K Connecticut Holding Company |
| Status | ACTIVE |
| Securing Hole Type and Location | THREADED SINGLE HOLE |
| Style Designator | PLAIN ROUND |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 1018 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1018 ASSN STD SINGLE MATERIAL RESPONSE |
| Screw Thread Series Designator and Location | SINGLE HOLE UNF |
| Outside Diameter | 1.313 INCHES NOMINAL IN |
| Nominal Thread Size | 0.190 INCHES SINGLE HOLE IN |
| Securing Hole Quantity | 1 |
| Surface Treatment | OXIDE |
| Bore Diameter | 0.6250 INCHES NOMINAL IN |
| Material | STEEL COMP 1018 |
| Thickness | 0.438 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 |
|---|---|
| 15518 PRIMARY | H-K Connecticut Holding Company (USA) |
NSN 3040-01-142-1641 is a Collar,shaft, manufactured by H-K Connecticut Holding Company, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-142-1641 has 1 manufacturer part number on file: 15518 (H-K Connecticut Holding Company).
3 possible matches (shared part number, not a government interchangeability claim): 4330-01-147-8501, 3040-01-518-4798, 5120-01-604-3682. Verify interchangeability with system specifications before substitution.
Key specifications for 15518: Securing Hole Type and Location: THREADED SINGLE HOLE; Style Designator: PLAIN ROUND; Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 1018 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1018 ASSN STD SINGLE MATERIAL RESPONSE; Screw Thread Series Designator and Location: SINGLE HOLE UNF. 11 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.