The Collar,shaft, cataloged under National Stock Number 3040-01-345-3951, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Burch Company Inc, the. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-345-3951 |
| Primary Part Number | 2248-A |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Burch Company Inc, the |
| Status | ACTIVE |
| Securing Hole Type and Location | THREADED SINGLE HOLE |
| Style Designator | PLAIN ROUND |
| Screw Thread Series Designator and Location | SINGLE HOLE UNIFIED NATIONAL COARSE (UNC) |
| Outside Diameter | 2.500 INCHES NOMINAL IN |
| Nominal Thread Size | 0.375 INCHES SINGLE HOLE IN |
| Securing Hole Quantity | 1 |
| Bore Diameter | 1.2812 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 1.375 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 |
| Part Number | Manufacturer |
|---|---|
| 2248-A PRIMARY | Burch Company Inc, the (USA) |
NSN 3040-01-345-3951 is a Collar,shaft, manufactured by Burch Company Inc, the, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-345-3951 has 1 manufacturer part number on file: 2248-A (Burch Company Inc, the).
Key specifications for 2248-A: Securing Hole Type and Location: THREADED SINGLE HOLE; Style Designator: PLAIN ROUND; Screw Thread Series Designator and Location: SINGLE HOLE UNIFIED NATIONAL COARSE (UNC); Outside Diameter: 2.500 INCHES NOMINAL IN. 9 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.