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Graco 105319 Lock Spring Washer

The Graco 105319 Washer Lock Spring keeps fasteners secure under vibration, ensuring long-lasting stability and reliable performance in your Graco equipment.

  • OEM Part #105319 – genuine Graco component
  • Prevents loosening of bolts and nuts
  • Maintains tension and mechanical integrity
  • Durable design for heavy-duty spray systems

$12.26
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Detailed Overview – Graco 105319 Washer Lock Spring

The Graco Washer Lock Spring (Part # 105319) is a compact yet critical fastening component engineered to secure bolted connections in high-vibration and high-performance spray and fluid-handling equipment. Its spring-lock design maintains tension, resists loosening under load, and ensures reliable mechanical integrity over extended service cycles.

Key Features

Attribute Details
OEM Part Number 105319
Type Spring-lock washer (lock spring washer)
Typical Dimensions Approx. 0.5 in × 0.55 in × 0.25 in (12.7 mm × 14.0 mm × 6.4 mm) for standard applications
Function Provides resilient tension and locking action to bolts and nuts, preventing loosening due to vibration or cyclical loading
Quality Original equipment manufacturer (OEM) component from Graco, ensuring correct fit and material specification

Installation & Maintenance Tips

To ensure optimal performance and longevity of the lock spring washer:

  • Always disconnect power and relieve system pressure before accessing bolted joints.
  • Inspect the bolt and mating surfaces for wear, corrosion or damage before installing the washer.
  • Place the lock spring washer directly under the bolt head or nut as specified by the equipment manual—do not stack with standard flat washers unless recommended.
  • Tighten the fastener to the specified torque while ensuring the washer compresses and engages the substrate.
  • After installation, monitor the joint for signs of looseness, vibration or movement; replace the washer if any deformation or loss of spring action is evident.

Frequently Asked Questions

The washer lock spring ensures sustained clamping force and resists loosening under vibration or thermal cycling, helping maintain mechanical integrity of bolted assemblies.

Yes — it is an original Graco part engineered to meet factory specifications for material, fit and function.

Replace the washer if you observe visible flattening, loss of spring tension, bolt loosening, or recurring joint movement under load—timely replacement helps prevent joint failure or damage to associated components.

Using only authentic parts and adhering to correct installation procedures ensures your equipment maintains stability, performance and safety over the long term.

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