Aluminum Cored Hole Calculator

Find the proper hole dimensions for your TAPTITE® fastener.

DISCLAIMER: These calculations provide engineering guidance only.
All dimensions must be checked in practice prior to critical use.

User Inputs

• Hole Entry Feature:
• Product:
• Fastener Type:
• Fastener Size:
• Countersink Angle: °
• Countersink Depth: mm
• Counterbore Depth: mm
• Penetration Depth: mm
• Draft Angle: °
• Screw Clearance: mm

Calculated Outputs

• Hole Depth:
• Full Thread Engagement:
• Draft Angle per Side: °
• Round to (significant figures):
• Top of hole, below entry feature:
• Top of hole, Max:
• Top of hole, Min:
• Bottom of screw engagement:
• Bottom of screw engagement, Max:
• Bottom of screw engagement, Min:
• Bottom of cored hole:
• Bottom of cored hole, Max:
• Bottom of cored hole, Min:
• Countersink Diameter:
• Counterbore Diameter:
• Boss Diameter: