

The Graco 103972 Screw, Drive is a precision type-U fastener used inside High-Flo displacement pumps to secure internal components and ensure stable alignment during operation.
The Graco 103972 Screw, Drive is used inside select Graco High-Flo displacement pumps and related assemblies. Known fitment includes the pump/model references below:
The 103972 is a small type-U drive screw used to secure and align internal components within specific Graco High-Flo pump assemblies. Its correct length and form ensure reliable seating without loosening under vibration.
| Part Number | 103972 (also shown as 103-972 in some literature) |
|---|---|
| Official Name | Screw, Drive (type-U) |
| Typical Length | Approx. 3/16″ (per service references) |
| Application | Internal fastening/alignment inside High-Flo displacement pumps |