The Collar,shaft, cataloged under National Stock Number 3040-00-489-2549, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lds Test and Measurement Llc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-489-2549 |
| Primary Part Number | 243443 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lds Test and Measurement Llc |
| Status | ACTIVE |
| Securing Hole Type and Location | THREADED SINGLE HOLE |
| Style Designator | PLAIN ROUND |
| Material Document and Classification | QQ-S-764, TYPE 303, COND A-CANCELED FED SPEC 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 |
| Angle Between Centerlines of Securing Holes in Deg | 90.0 |
| Securing Hole Quantity | 2 |
| Surface Treatment | PASSIVATE |
| Bore Diameter | 0.2520 INCHES NOMINAL IN |
| Material | STEEL COMP 303 |
| Thickness | 0.310 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 |
|---|---|
| 243443 PRIMARY | Lds Test and Measurement Llc (USA) |
| Reference | Meaning |
|---|---|
| 243443 | 5/9 Secondary reference U.S. Government activity |
NSN 3040-00-489-2549 is a Collar,shaft, manufactured by Lds Test and Measurement Llc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-489-2549 has 1 manufacturer part number on file: 243443 (Lds Test and Measurement Llc).
Key specifications for 243443: Securing Hole Type and Location: THREADED SINGLE HOLE; Style Designator: PLAIN ROUND; Material Document and Classification: QQ-S-764, TYPE 303, COND A-CANCELED FED SPEC SINGLE MATERIAL RESPONSE; Screw Thread Series Designator and Location: SINGLE HOLE UNIFIED NATIONAL COARSE (UNC). 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.