Graco 114531 Hex-Head Washer Machine Screw – Part Overview
The Graco 114531 Hexagonal-Head Washer Machine Screw is a precision-machined fastener used in Graco equipment to securely clamp components with a broad contact surface.
Compatible Machines / Systems
Graco Double-Wall Hopper (Model 3A6110A) — 114531 appears in parts diagram.
Graco 17C301 high-pressure pump / sprayer system — uses 114531 in its parts list.
Other Graco machines where the parts manual specifies “SCREW, mach, hex washer hd – part # 114531.”
Key Specifications
Part Number: 114531
Type: Machine screw, hexagonal head with washer face
Purpose: Provides strong, stable fastening in assemblies subject to vibration or load
Why This Part Matters
The **hex head** allows for good torque application without stripping.
The **washer head design** helps distribute clamping force, reducing stress on housing or mounting surfaces.
Using the **correct OEM screw** ensures the structural integrity and reliability of Graco assemblies during maintenance or rebuilds.
Installation Tips
Make sure the mating surface is clean and flat before installing the screw.
Use the correct socket or wrench for the hex head to avoid rounding it off.
Tighten to the torque specification given in your machine’s service manual to prevent over-stress or under-clamp.
Re-check torque after the machine has run under load (vibration can settle parts slightly).
Frequently Asked Questions
Possibly, but using the **exact OEM part (114531)** ensures the correct dimensions, thread class, and washer-head size — which affects load distribution and safety. A generic screw may not match exactly.
Check your machine’s **parts or service manual**. If it lists “SCREW, mach, hex washer hd – part number 114531,” then that is your correct replacement. If a different part number is shown, use that instead.
