TIME-SERT Engineering Data & Technical Specifications
Complete technical specifications and engineering data for Time-Sert thread repair inserts. Use these tables to determine the correct drill size, tap size, and insert specifications for your application.
All measurements and specifications are provided by the manufacturer. Always verify dimensions before beginning installation.
How to Use These Tables
- 1.Identify your original thread size (metric or inch)
- 2.Find the corresponding drill size and tap size in the table
- 3.Note the insert length and part numbers for your application
- 4.Order the complete kit which includes all necessary tools and inserts
METRIC Engineering Data

INCH Engineering Data (UNC & UNF)
INCH Engineering Data table unavailable
METRIC: Complete specifications for metric Time-Sert inserts from M5 through M20 and beyond. Includes drill sizes, tap sizes, counterbore specifications, and insert part numbers.
INCH: Complete specifications for inch-sized Time-Sert inserts including UNC (Unified National Coarse) and UNF (Unified National Fine) thread series. Includes drill sizes, tap sizes, and insert part numbers.
For detailed specifications, please contact us.
Important Notes
- •Always use the specified drill size for proper fit
- •Use cutting oil when drilling and tapping aluminum
- •Counterbore depth must be accurate for proper seating
- •Install inserts to the proper depth using installation tool
- •Insert lengths are measured in 1D, 1.5D, 2D, 3D increments
Installation Requirements
- •Proper drill bit (included in kit)
- •Counterbore tool (included in kit)
- •Time-Sert tap (included in kit)
- •Installation driver (included in kit)
- •Thread inserts (5 included in each kit)
Best Use Cases & Applications
🔧 Primary Applications
- •Spark plug hole repairs - specialized kits available for all common sizes
- •Oil pan/sump plug threads - quick repair for stripped drain holes
- •Engine and headbolt repairs - heavy-duty kits for aluminum and cast iron blocks
- •Transmission case threads - permanent repair in high-stress areas
- •Manifold threads - vibration-resistant repair
When to Choose Time-Sert
- •Repairing stripped threads in aluminum
- •Creating stronger threads in soft materials
- •Applications with vibration or thermal cycling
- •When permanent repair is required
- •Spark plug and critical engine repairs
Material Compatibility:
- •Aluminum (primary use)
- •Cast iron
- •Plastics and composites
- •Magnesium alloys
- •Other soft materials
Need Assistance Selecting the Right Insert?
If you're unsure which Time-Sert insert is right for your application, our technical team can help you select the correct specifications.
