1. Select an appropriate head style.

Slotted	Wing	Slotted Knob	Hex	Self Ejecting
Studs are available in four standard head styles. Special heads are possible up to 1.25" (31.75 mm) diameter. Ejecting assemblies improve fastener action by springing an unlocked stud clear of the receptacle and holding it in position for straight re-entry. An ejected stud also signals an unlocked fastener.

2. Select a stud retainer:

1. A split retainer which pushes onto the stud shank from the side,
2. a solid retainer which pushes straight over the stud lugs, or
3. if the panel is ductile plastic, by pushing the lugs through a molded interference-fit hole.

Split Retainer

Solid Retainer

No Retainer / interference fit hole

4. Select a receptacle type:

1. riveted,
2. snap-in high-performance rear-load,
3. snap-in mini rear load,
4. snap-in mini top load.

Riveted	Snap-In back installed high-performance	Mini Snap-In back installed	Mini Snap-In Top Installed

All receptacles meet the performance specifications, but the riveted and snap-in high-performance rear load offer smoother operation and more even locking torque across their material grip range.

5. Now determine the Panel, Gap, and Support thicknesses.

Now determine the thickness of material in which the stud is retained and to which the receptacle is attached.  Then determine the total gap between the level of stud head contact with material and the level of receptacle contact, in the closed position, include any air gaps and any part of the stud retainer thickness not buried in material already measured.  Refer to the examples on each receptacle page, which will guide you to the length selection table.

6. Click on the "Calculate" button to see the resulting part numbers.

Every effort has been made to verify the accuracy of the calculations in this program.  However, your application may be unique and not allowed for in the software.  The calculations should be verified with an authorized sales engineer before purchasing the parts for your specific application.

If you encounter any difficulties with this software, please send me an email outlining the problem and I will address the difficulty.  As the software sees more use, I will be posting a frequently asked questions page to address the most common issues.