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Graco 101870 Screw Machine

The Graco 101870 Screw, Machine is a genuine fastener used to secure components within Graco pump and sprayer assemblies. Ideal for maintenance and replacements.

  • Part Number: 101870
  • Size: 1/4-20 × 3/8 in (oval head)
  • Used In: Pump assemblies, shield retention points
  • Fits: Models using displacement pump assemblies 223954 Series B or Ref. 28 / 331
  • OEM Graco Quality – ensures perfect fit and durability

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Key Details & Compatibility (Graco 101870 — Screw, Machine)

Compatible Machines

  • Graco equipment that uses displacement-pump assemblies where the parts list explicitly calls out 101870 (often listed as “SCREW, oval hd machine; 1/4-20 × 3/8 (10 mm)” or “SCREW, shield retaining”).
  • Pump assemblies in the 223954 series (e.g., Series B) that reference item/Ref. 331 = 101870 in the exploded view.
  • Models using pump setups documented to include Ref. 28 = 101870 “oval head machine screw 1/4-20 × 3/8” in their parts lists.

Product Overview

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.

Specifications

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

Cross-References (Found in Graco Manuals)

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)”

Fitment Notes

  • Confirm by manual: Match the part number 101870 against your unit’s parts diagram before ordering.
  • Shared across models: This fastener is used in multiple assemblies; the same screw may appear in different model families if they share a pump platform.
  • Length check: “3/8 in” is common; if your diagram calls out a different length or head style, select that exact spec.

Frequently Asked Questions

Open your model’s parts list/exploded view and look for part 101870. It often appears as Ref. 28 or Ref. 331. If your list shows 101870, it’s the correct screw for that position.

Manuals commonly show 1/4-20 × 3/8 (≈10 mm). Always follow your unit’s parts list for the definitive specification.

In Graco documentation, Screw, Machine refers to a specific fastener spec used in assemblies (often oval head). Use the exact Graco part called out for your position instead of substituting generic hardware.

Follow the torque or assembly instructions in your model’s service manual. If no torque is published, tighten securely without stripping threads; do not over-torque.

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