

The Graco 101870 Screw, Machine is a genuine fastener used to secure components within Graco pump and sprayer assemblies. Ideal for maintenance and replacements.
The Graco 101870 is a factory Screw, Machine commonly used to retain shields or secure sub-components in Graco pump and sprayer assemblies. It’s a standard service fastener that appears across multiple assemblies; always confirm by referencing your exact model’s parts list.
| Graco Part # | 101870 |
|---|---|
| Official Name | Screw, Machine (often described as “oval head machine screw; shield retaining”) |
| Thread / Size | 1/4-20 × 3/8 (approx. 10 mm length) — verify length against your manual |
| Typical Use | Shield retention / sub-assembly fastening within pump or sprayer assemblies |
| Where You’ll See It | Listed in exploded views/parts lists as Ref. 28 or Ref. 331 depending on the manual |
| Manual / Section | How 101870 Appears |
|---|---|
| Displacement/pump assembly manuals for 223954 series | Ref. 331 = 101870 “screw, shield retaining” |
| Sprayer pump parts lists referencing Ref. 28 | 101870 “oval hd machine; 1/4-20 × 3/8 (10 mm)” |