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Graco 103187 Screw Set Sch

The Graco 103187 Set Screw (SCH) is a genuine OEM fastener designed for precise component locking in Graco spray guns and sprayers.

  • Part Number: 103187 / 103-187
  • Type: Socket-Head Set Screw
  • Used In: Graco Ultra-Lite Pistol Grip Gun and other Graco models
  • Function: Secures internal parts and maintains proper alignment

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About This Part — Graco 103187 Set Screw (SCH)

Compatible Machines

  • Graco Ultra-Lite Pistol Grip Spray Gun (manual ref. 308253 series)
  • Other Graco equipment that specifies 103187 / 103-187 in the OEM parts list (check your model’s parts manual).

Key Details

Manufacturer Graco
Part Number 103187 (also referenced as 103-187)
Item Type SCREW, SET, SCH (socket-head set screw)
Function Secures/locks components in place inside spray guns/sprayers; used where a set screw is specified by the OEM.
What’s Included 1 × Set Screw (SCH)
Notes Dimensions/material may vary by application; always verify against your model’s parts diagram before ordering.

Why Choose the OEM Part

  • Correct fit for assemblies that call out Graco 103187.
  • Maintains factory tolerances and component alignment.
  • Helps prevent loosening or misalignment under vibration.

When to Replace

  • Rounded/damaged hex socket or worn threads.
  • Cannot hold proper torque or repeatedly loosens.
  • Corrosion or visible deformation.

Frequently Asked Questions

No. It is supplied as a standard OEM set screw. Apply thread-locker only if your model’s service manual specifies it.

Yes. Graco references the same part both as 103187 and 103-187 in different literature.

Confirmed usage includes the Graco Ultra-Lite Pistol Grip spray gun (308253 series). It may be used in other Graco units where 103187 is listed in the official parts diagram—always check your model’s manual.

Graco does not publish a universal spec for 103187 across all models. Specs can vary by assembly. Refer to your equipment’s parts list for exact dimensions.

Only if it matches the OEM dimensions, grade, and tip style. For best results and safety, use the genuine Graco 103187 part where specified.

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