The Collar,shaft, cataloged under National Stock Number 3040-00-445-7423, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Oro Manufacturing Co. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-445-7423 |
| Primary Part Number | A3A1657 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Oro Manufacturing Co |
| Status | ACTIVE |
| Securing Hole Type and Location | UNTHREADED SINGLE HOLE |
| Style Designator | PLAIN ROUND |
| Material Document and Classification | WW-T700/6B, T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 1.125 INCHES NOMINAL IN |
| Hole Diameter and Location | 0.0469 INCHES NOMINAL SINGLE HOLE IN |
| Angle Between Centerlines of Securing Holes in Deg | 180.0 |
| Securing Hole Quantity | 2 |
| Surface Treatment | ANODIZE |
| Bore Diameter | 1.0090 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 |
| Thickness | 0.375 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A3A1657 PRIMARY | Oro Manufacturing Co (USA) |
NSN 3040-00-445-7423 is a Collar,shaft, manufactured by Oro Manufacturing Co, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-445-7423 has 1 manufacturer part number on file: A3A1657 (Oro Manufacturing Co).
Key specifications for A3A1657: Securing Hole Type and Location: UNTHREADED SINGLE HOLE; Style Designator: PLAIN ROUND; Material Document and Classification: WW-T700/6B, T6 FED SPEC SINGLE MATERIAL RESPONSE; Outside Diameter: 1.125 INCHES NOMINAL IN. 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.
NSN 3040-00-445-7423 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.