Graco 113160 Hexagonal Head Machined Washer/Screw

The Graco 113160 Hexagonal Head Machined Screw is an OEM fastener used to secure control box and structural components in several GMAX II and HTX sprayers.

OEM part #113160
Slotted hex-washer head design
Fits GMAX II 3900, 5900, 7900 & HTX 2030
Provides secure, vibration-resistant fastening
Durable machined construction

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Description

Graco 113160 Hexagonal Head Machined Screw Details

The Graco 113160 Hexagonal Head Machined Screw is a precision OEM fastener used in several Graco sprayers for securing control box components and structural assemblies. Its slotted hex-washer head design provides stable torque and improved load distribution.

Compatible Machines

Graco GMAX II 3900 – Control box assembly
Graco GMAX II 5900 – Control system components
Graco GMAX II 7900 – Housing & panel fastening
Graco HTX 2030 – Listed in the HTX 2030 parts manual

Key Specifications

Part Number	113160
Type	Machined Screw – Slotted Hex Washer Head
Approx. Length	0.4″ (≈ 1.016 cm)
Head Height	0.3″ (≈ 0.762 cm)
Head Width	0.15″ (≈ 0.381 cm)
Primary Use	Control box and structural fastener in Graco sprayers

Why This Screw Is Important

Ensures reliable fastening inside control box assemblies
OEM engineering prevents stripping or vibration loosening
Washer-head design distributes pressure evenly on components
Maintains alignment of panels and electronic housings

Installation Notes

Verify correct screw placement using your machine’s parts breakdown.
Avoid overtightening to prevent damage to control panel housings.
Use proper driver (slot or hex) to maintain screw integrity.
Replace any worn or stripped screws immediately for safe operation.

Frequently Asked Questions

It’s a precision fastener designed to secure control box components and structural assemblies, ensuring stable operation and preventing vibration-related issues.

It is listed specifically for the GMAX II 3900, 5900, and 7900 models. Other models may use different fasteners—always confirm with the parts manual.

Not recommended. The OEM design provides specific thread and head geometry needed for proper seating and torque within Graco equipment.

Corrosion, stripped threads, vibration loosening, or damaged drive slots are all indicators that the screw should be replaced to maintain equipment reliability.