- These in hole well nuts have a flanged bushing with a brass machine nut molded into one end
 - Tightening a conventional machine screw in the brass nut causes the insert to expand, making a secure fastening
 
| Type | Nut | 
| Style | Well Nut | 
| Size | 1/4"-20 | 
| Material | Neoprene/Brass | 
| Head Size | 0.635 | 
| Overall Length | 0.801 | 
| Shank Length | 0.75 | 
| Shank Size | 0.5 | 
| Head Thickness | 0.051 | 
| Hole Size | 1/2" | 
| Grip Range | .187-.343 | 
| Outer Material | Neoprene | 
| Inner Nut Material | Brass |