T&D Machine 5/16 x 1.890 Hold Down Stud — Rocker Arm Fastener

SKU: BJJD_05051
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About T&D Machine T&D Machine engineers high-quality automotive parts and ...Read More

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About T&D Machine

T&D Machine engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full T&D Machine lineup with fast shipping and expert fitment support — order with confidence.

High-Strength Rocker Arm Hold Down Stud

The T&D Machine 5/16 x 1.890 hold down stud is a critical fastener designed to provide maximum clamping force for your rocker arm assembly. Manufactured from high-grade steel, this stud is built to withstand the intense vibration and thermal cycling found in high-performance racing engines, ensuring your valvetrain geometry remains stable under all conditions.

Technical Specifications

  • Thread Size: 5/16-18/24
  • Length: 1.890 inches
  • Material: High-strength steel
  • Application: Rocker arm hold down
  • Design: Precision-engineered for T&D systems

Proper fastener selection is key to engine longevity. This hold down stud offers the reliability needed to prevent backing out or failure during high-RPM operation. Its precise dimensions ensure a perfect fit with T&D rocker systems, allowing for accurate torque application and consistent valve train performance. When you need dependable engine hardware for your next build, look no further than the selection at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About T&D Machine

T&D Machine engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full T&D Machine lineup with fast shipping and expert fitment support — order with confidence.

High-Strength Rocker Arm Hold Down Stud

The T&D Machine 5/16 x 1.890 hold down stud is a critical fastener designed to provide maximum clamping force for your rocker arm assembly. Manufactured from high-grade steel, this stud is built to withstand the intense vibration and thermal cycling found in high-performance racing engines, ensuring your valvetrain geometry remains stable under all conditions.

Technical Specifications

  • Thread Size: 5/16-18/24
  • Length: 1.890 inches
  • Material: High-strength steel
  • Application: Rocker arm hold down
  • Design: Precision-engineered for T&D systems

Proper fastener selection is key to engine longevity. This hold down stud offers the reliability needed to prevent backing out or failure during high-RPM operation. Its precise dimensions ensure a perfect fit with T&D rocker systems, allowing for accurate torque application and consistent valve train performance. When you need dependable engine hardware for your next build, look no further than the selection at GGCRACING.

Product Details

Product Description

About T&D Machine

T&D Machine engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full T&D Machine lineup with fast shipping and expert fitment support — order with confidence.

High-Strength Rocker Arm Hold Down Stud

The T&D Machine 5/16 x 1.890 hold down stud is a critical fastener designed to provide maximum clamping force for your rocker arm assembly. Manufactured from high-grade steel, this stud is built to withstand the intense vibration and thermal cycling found in high-performance racing engines, ensuring your valvetrain geometry remains stable under all conditions.

Technical Specifications

  • Thread Size: 5/16-18/24
  • Length: 1.890 inches
  • Material: High-strength steel
  • Application: Rocker arm hold down
  • Design: Precision-engineered for T&D systems

Proper fastener selection is key to engine longevity. This hold down stud offers the reliability needed to prevent backing out or failure during high-RPM operation. Its precise dimensions ensure a perfect fit with T&D rocker systems, allowing for accurate torque application and consistent valve train performance. When you need dependable engine hardware for your next build, look no further than the selection at GGCRACING.

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