The Collar,shaft, cataloged under National Stock Number 3040-01-458-7188, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Summa Technology, Inc. Dba Aar Precision Systems Div Aar Aerostructures and Interiors. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-01-458-7188 |
| Primary Part Number | 12468745 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Summa Technology, Inc. Dba Aar Precision Systems Div Aar Aerostructures and Interiors |
| Status | ACTIVE |
| Style Designator | PLAIN ROUND |
| Outside Diameter | 2.380 INCHES NOMINAL IN |
| Distance From Bore Centerline to End | 1.190 INCHES NOMINAL IN |
| Surface Treatment | ZINC |
| Bore Diameter | 1.5400 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 0.630 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 |
|---|---|
| 12468745 PRIMARY | Summa Technology, Inc. Dba Aar Precision Systems Div Aar Aerostructures and Interiors (USA) |
| Reference | Meaning |
|---|---|
| 12468745 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 3040-01-458-7188 is a Collar,shaft, manufactured by Summa Technology, Inc. Dba Aar Precision Systems Div Aar Aerostructures and Interiors, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-458-7188 has 1 manufacturer part number on file: 12468745 (Summa Technology, Inc. Dba Aar Precision Systems Div Aar Aerostructures and Interiors).
Key specifications for 12468745: Style Designator: PLAIN ROUND; Outside Diameter: 2.380 INCHES NOMINAL IN; Distance From Bore Centerline to End: 1.190 INCHES NOMINAL IN; Surface Treatment: ZINC. 7 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.