BoltBuddy is a comprehensive Design Guide filled with information needed to lock-down the critical numbers when incorporating fasteners into your designs. Complete dimensional information is available from 0000 thru 3/8 inch fasteners.
From specifying the proper hole callouts on detail documents to analyzing complex torque problems, you will find this app to be a valuable resource saving you time and helping you keep a more consistence detail to your work. The information you need to layout mating fit geometries or fabricate prototypes is at your finger tips.

Additionally, when you have a more demanding fastener problem, for instance battery terminals, pressure tank bulkhead bolts , or engine head bolts, BoltBuddy’s torque analysis will help you select the correct bolt size, bolt material, and thread depth required to protect the internal threads from stripping. The torque analysis can be used for either clamping force or lifting force.

To complete a torque analysis, enter the clamping force you need, enter the material of the fastener as well as the internal thread material. Enter a coefficient of friction and you’re ready to find a fastener. Simply toggle the right or left buttons at the bottom of the screen to change fasteners until the stress range is under the 50 % range. Depending on the duty cycle and thermal loads, you may want to keep the range under 30% for improved safety margins and lower fatigue loading.

An extra feature incorporated into BoltBuddy is the Drill Index that includes the Metric and English drill sizes from .0135” to 1.00”.

- Design data for sizes 0000 - 3/8 ACME Thread
- Drill index .0135” - 1.00”
- Torque analysis calculator
- Tensile load limit of bolt
- Torsion Shear Stress in bolt
- Min thread depth needed

Engineering fasteners into any design requires numbers that work, BoltBuddy has the critical fastener specifications as well as a torque analysis calculator for the more demanding fastener applications….